2012-11-28 21:28:09 -07:00
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/*
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f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
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* fs/f2fs/segment.h
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*
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* Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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2013-04-29 01:58:39 -06:00
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#include <linux/blkdev.h>
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2015-05-22 15:13:32 -06:00
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#include <linux/backing-dev.h>
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2013-04-29 01:58:39 -06:00
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|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
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/* constant macro */
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#define NULL_SEGNO ((unsigned int)(~0))
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2013-03-30 22:26:03 -06:00
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#define NULL_SECNO ((unsigned int)(~0))
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f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
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2014-03-18 23:17:21 -06:00
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#define DEF_RECLAIM_PREFREE_SEGMENTS 5 /* 5% over total segments */
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2016-07-13 19:23:35 -06:00
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#define DEF_MAX_RECLAIM_PREFREE_SEGMENTS 4096 /* 8GB in maximum */
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2013-10-23 22:31:34 -06:00
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2016-12-05 14:56:04 -07:00
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#define F2FS_MIN_SEGMENTS 9 /* SB + 2 (CP + SIT + NAT) + SSA + MAIN */
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2013-04-05 23:44:32 -06:00
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/* L: Logical segment # in volume, R: Relative segment # in main area */
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f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
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#define GET_L2R_SEGNO(free_i, segno) (segno - free_i->start_segno)
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#define GET_R2L_SEGNO(free_i, segno) (segno + free_i->start_segno)
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2013-11-21 04:04:21 -07:00
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#define IS_DATASEG(t) (t <= CURSEG_COLD_DATA)
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#define IS_NODESEG(t) (t >= CURSEG_HOT_NODE)
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
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2013-03-30 21:30:04 -06:00
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#define IS_CURSEG(sbi, seg) \
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((seg == CURSEG_I(sbi, CURSEG_HOT_DATA)->segno) || \
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(seg == CURSEG_I(sbi, CURSEG_WARM_DATA)->segno) || \
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(seg == CURSEG_I(sbi, CURSEG_COLD_DATA)->segno) || \
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(seg == CURSEG_I(sbi, CURSEG_HOT_NODE)->segno) || \
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(seg == CURSEG_I(sbi, CURSEG_WARM_NODE)->segno) || \
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(seg == CURSEG_I(sbi, CURSEG_COLD_NODE)->segno))
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
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#define IS_CURSEC(sbi, secno) \
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((secno == CURSEG_I(sbi, CURSEG_HOT_DATA)->segno / \
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sbi->segs_per_sec) || \
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(secno == CURSEG_I(sbi, CURSEG_WARM_DATA)->segno / \
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sbi->segs_per_sec) || \
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(secno == CURSEG_I(sbi, CURSEG_COLD_DATA)->segno / \
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sbi->segs_per_sec) || \
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(secno == CURSEG_I(sbi, CURSEG_HOT_NODE)->segno / \
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sbi->segs_per_sec) || \
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(secno == CURSEG_I(sbi, CURSEG_WARM_NODE)->segno / \
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sbi->segs_per_sec) || \
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(secno == CURSEG_I(sbi, CURSEG_COLD_NODE)->segno / \
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sbi->segs_per_sec)) \
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2014-09-23 12:23:01 -06:00
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#define MAIN_BLKADDR(sbi) (SM_I(sbi)->main_blkaddr)
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#define SEG0_BLKADDR(sbi) (SM_I(sbi)->seg0_blkaddr)
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#define MAIN_SEGS(sbi) (SM_I(sbi)->main_segments)
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#define MAIN_SECS(sbi) (sbi->total_sections)
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#define TOTAL_SEGS(sbi) (SM_I(sbi)->segment_count)
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#define TOTAL_BLKS(sbi) (TOTAL_SEGS(sbi) << sbi->log_blocks_per_seg)
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#define MAX_BLKADDR(sbi) (SEG0_BLKADDR(sbi) + TOTAL_BLKS(sbi))
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2014-09-25 05:39:17 -06:00
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#define SEGMENT_SIZE(sbi) (1ULL << (sbi->log_blocksize + \
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2014-09-23 12:23:01 -06:00
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sbi->log_blocks_per_seg))
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#define START_BLOCK(sbi, segno) (SEG0_BLKADDR(sbi) + \
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
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(GET_R2L_SEGNO(FREE_I(sbi), segno) << sbi->log_blocks_per_seg))
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2014-09-23 12:23:01 -06:00
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|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
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#define NEXT_FREE_BLKADDR(sbi, curseg) \
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(START_BLOCK(sbi, curseg->segno) + curseg->next_blkoff)
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2014-09-23 12:23:01 -06:00
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#define GET_SEGOFF_FROM_SEG0(sbi, blk_addr) ((blk_addr) - SEG0_BLKADDR(sbi))
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
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#define GET_SEGNO_FROM_SEG0(sbi, blk_addr) \
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(GET_SEGOFF_FROM_SEG0(sbi, blk_addr) >> sbi->log_blocks_per_seg)
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2014-02-03 21:01:10 -07:00
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#define GET_BLKOFF_FROM_SEG0(sbi, blk_addr) \
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(GET_SEGOFF_FROM_SEG0(sbi, blk_addr) & (sbi->blocks_per_seg - 1))
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|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
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#define GET_SEGNO(sbi, blk_addr) \
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(((blk_addr == NULL_ADDR) || (blk_addr == NEW_ADDR)) ? \
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NULL_SEGNO : GET_L2R_SEGNO(FREE_I(sbi), \
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GET_SEGNO_FROM_SEG0(sbi, blk_addr)))
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#define GET_SECNO(sbi, segno) \
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((segno) / sbi->segs_per_sec)
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#define GET_ZONENO_FROM_SEGNO(sbi, segno) \
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((segno / sbi->segs_per_sec) / sbi->secs_per_zone)
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#define GET_SUM_BLOCK(sbi, segno) \
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((sbi->sm_info->ssa_blkaddr) + segno)
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#define GET_SUM_TYPE(footer) ((footer)->entry_type)
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#define SET_SUM_TYPE(footer, type) ((footer)->entry_type = type)
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#define SIT_ENTRY_OFFSET(sit_i, segno) \
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(segno % sit_i->sents_per_block)
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2014-09-04 04:11:47 -06:00
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#define SIT_BLOCK_OFFSET(segno) \
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
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(segno / SIT_ENTRY_PER_BLOCK)
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2014-09-04 04:11:47 -06:00
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#define START_SEGNO(segno) \
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(SIT_BLOCK_OFFSET(segno) * SIT_ENTRY_PER_BLOCK)
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2013-11-21 18:09:59 -07:00
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#define SIT_BLK_CNT(sbi) \
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2014-09-23 12:23:01 -06:00
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((MAIN_SEGS(sbi) + SIT_ENTRY_PER_BLOCK - 1) / SIT_ENTRY_PER_BLOCK)
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
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#define f2fs_bitmap_size(nr) \
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(BITS_TO_LONGS(nr) * sizeof(unsigned long))
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2014-09-15 04:01:10 -06:00
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#define SECTOR_FROM_BLOCK(blk_addr) \
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(((sector_t)blk_addr) << F2FS_LOG_SECTORS_PER_BLOCK)
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#define SECTOR_TO_BLOCK(sectors) \
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(sectors >> F2FS_LOG_SECTORS_PER_BLOCK)
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2012-12-09 17:26:05 -07:00
|
|
|
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
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/*
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* indicate a block allocation direction: RIGHT and LEFT.
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* RIGHT means allocating new sections towards the end of volume.
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* LEFT means the opposite direction.
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*/
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enum {
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ALLOC_RIGHT = 0,
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ALLOC_LEFT
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};
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/*
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* In the victim_sel_policy->alloc_mode, there are two block allocation modes.
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* LFS writes data sequentially with cleaning operations.
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* SSR (Slack Space Recycle) reuses obsolete space without cleaning operations.
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*/
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enum {
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LFS = 0,
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SSR
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};
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/*
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* In the victim_sel_policy->gc_mode, there are two gc, aka cleaning, modes.
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* GC_CB is based on cost-benefit algorithm.
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|
|
* GC_GREEDY is based on greedy algorithm.
|
|
|
|
*/
|
|
|
|
enum {
|
|
|
|
GC_CB = 0,
|
|
|
|
GC_GREEDY
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* BG_GC means the background cleaning job.
|
|
|
|
* FG_GC means the on-demand cleaning job.
|
2015-10-05 12:02:54 -06:00
|
|
|
* FORCE_FG_GC means on-demand cleaning job in background.
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
*/
|
|
|
|
enum {
|
|
|
|
BG_GC = 0,
|
2015-10-05 12:02:54 -06:00
|
|
|
FG_GC,
|
|
|
|
FORCE_FG_GC,
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
};
|
|
|
|
|
|
|
|
/* for a function parameter to select a victim segment */
|
|
|
|
struct victim_sel_policy {
|
|
|
|
int alloc_mode; /* LFS or SSR */
|
|
|
|
int gc_mode; /* GC_CB or GC_GREEDY */
|
|
|
|
unsigned long *dirty_segmap; /* dirty segment bitmap */
|
f2fs: optimize gc for better performance
This patch improves the gc efficiency by optimizing the victim
selection policy. With this optimization, the random re-write
performance could increase up to 20%.
For f2fs, when disk is in shortage of free spaces, gc will selects
dirty segments and moves valid blocks around for making more space
available. The gc cost of a segment is determined by the valid blocks
in the segment. The less the valid blocks, the higher the efficiency.
The ideal victim segment is the one that has the most garbage blocks.
Currently, it searches up to 20 dirty segments for a victim segment.
The selected victim is not likely the best victim for gc when there
are much more dirty segments. Why not searching more dirty segments
for a better victim? The cost of searching dirty segments is
negligible in comparison to moving blocks.
In this patch, it enlarges the MAX_VICTIM_SEARCH to 4096 to make
the search more aggressively for a possible better victim. Since
it also applies to victim selection for SSR, it will likely improve
the SSR efficiency as well.
The test case is simple. It creates as many files until the disk full.
The size for each file is 32KB. Then it writes as many as 100000
records of 4KB size to random offsets of random files in sync mode.
The testing was done on a 2GB partition of a SDHC card. Let's see the
test result of f2fs without and with the patch.
---------------------------------------
2GB partition, SDHC
create 52023 files of size 32768 bytes
random re-write 100000 records of 4KB
---------------------------------------
| file creation (s) | rewrite time (s) | gc count | gc garbage blocks |
[no patch] 341 4227 1174 174840
[patched] 324 2958 645 106682
It's obvious that, with the patch, f2fs finishes the test in 20+% less
time than without the patch. And internally it does much less gc with
higher efficiency than before.
Since the performance improvement is related to gc, it might not be so
obvious for other tests that do not trigger gc as often as this one (
This is because f2fs selects dirty segments for SSR use most of the
time when free space is in shortage). The well-known iozone test tool
was not used for benchmarking the patch becuase it seems do not have
a test case that performs random re-write on a full disk.
This patch is the revised version based on the suggestion from
Jaegeuk Kim.
Signed-off-by: Jin Xu <jinuxstyle@gmail.com>
[Jaegeuk Kim: suggested simpler solution]
Reviewed-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2013-09-04 22:45:26 -06:00
|
|
|
unsigned int max_search; /* maximum # of segments to search */
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
unsigned int offset; /* last scanned bitmap offset */
|
|
|
|
unsigned int ofs_unit; /* bitmap search unit */
|
|
|
|
unsigned int min_cost; /* minimum cost */
|
|
|
|
unsigned int min_segno; /* segment # having min. cost */
|
|
|
|
};
|
|
|
|
|
|
|
|
struct seg_entry {
|
2016-05-04 09:19:48 -06:00
|
|
|
unsigned int type:6; /* segment type like CURSEG_XXX_TYPE */
|
|
|
|
unsigned int valid_blocks:10; /* # of valid blocks */
|
|
|
|
unsigned int ckpt_valid_blocks:10; /* # of valid blocks last cp */
|
|
|
|
unsigned int padding:6; /* padding */
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
unsigned char *cur_valid_map; /* validity bitmap of blocks */
|
2017-01-07 03:51:01 -07:00
|
|
|
#ifdef CONFIG_F2FS_CHECK_FS
|
|
|
|
unsigned char *cur_valid_map_mir; /* mirror of current valid bitmap */
|
|
|
|
#endif
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
/*
|
|
|
|
* # of valid blocks and the validity bitmap stored in the the last
|
|
|
|
* checkpoint pack. This information is used by the SSR mode.
|
|
|
|
*/
|
2016-05-04 09:19:48 -06:00
|
|
|
unsigned char *ckpt_valid_map; /* validity bitmap of blocks last cp */
|
2015-04-30 23:37:50 -06:00
|
|
|
unsigned char *discard_map;
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
unsigned long long mtime; /* modification time of the segment */
|
|
|
|
};
|
|
|
|
|
|
|
|
struct sec_entry {
|
|
|
|
unsigned int valid_blocks; /* # of valid blocks in a section */
|
|
|
|
};
|
|
|
|
|
|
|
|
struct segment_allocation {
|
|
|
|
void (*allocate_segment)(struct f2fs_sb_info *, int, bool);
|
|
|
|
};
|
|
|
|
|
2015-08-07 04:42:09 -06:00
|
|
|
/*
|
|
|
|
* this value is set in page as a private data which indicate that
|
|
|
|
* the page is atomically written, and it is in inmem_pages list.
|
|
|
|
*/
|
2016-01-29 17:21:15 -07:00
|
|
|
#define ATOMIC_WRITTEN_PAGE ((unsigned long)-1)
|
2016-12-14 11:12:56 -07:00
|
|
|
#define DUMMY_WRITTEN_PAGE ((unsigned long)-2)
|
2015-08-07 04:42:09 -06:00
|
|
|
|
|
|
|
#define IS_ATOMIC_WRITTEN_PAGE(page) \
|
|
|
|
(page_private(page) == (unsigned long)ATOMIC_WRITTEN_PAGE)
|
2016-12-14 11:12:56 -07:00
|
|
|
#define IS_DUMMY_WRITTEN_PAGE(page) \
|
|
|
|
(page_private(page) == (unsigned long)DUMMY_WRITTEN_PAGE)
|
2015-08-07 04:42:09 -06:00
|
|
|
|
2014-10-06 18:39:50 -06:00
|
|
|
struct inmem_pages {
|
|
|
|
struct list_head list;
|
|
|
|
struct page *page;
|
f2fs: support revoking atomic written pages
f2fs support atomic write with following semantics:
1. open db file
2. ioctl start atomic write
3. (write db file) * n
4. ioctl commit atomic write
5. close db file
With this flow we can avoid file becoming corrupted when abnormal power
cut, because we hold data of transaction in referenced pages linked in
inmem_pages list of inode, but without setting them dirty, so these data
won't be persisted unless we commit them in step 4.
But we should still hold journal db file in memory by using volatile
write, because our semantics of 'atomic write support' is incomplete, in
step 4, we could fail to submit all dirty data of transaction, once
partial dirty data was committed in storage, then after a checkpoint &
abnormal power-cut, db file will be corrupted forever.
So this patch tries to improve atomic write flow by adding a revoking flow,
once inner error occurs in committing, this gives another chance to try to
revoke these partial submitted data of current transaction, it makes
committing operation more like aotmical one.
If we're not lucky, once revoking operation was failed, EAGAIN will be
reported to user for suggesting doing the recovery with held journal file,
or retrying current transaction again.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-02-05 23:40:34 -07:00
|
|
|
block_t old_addr; /* for revoking when fail to commit */
|
2014-10-06 18:39:50 -06:00
|
|
|
};
|
|
|
|
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
struct sit_info {
|
|
|
|
const struct segment_allocation *s_ops;
|
|
|
|
|
|
|
|
block_t sit_base_addr; /* start block address of SIT area */
|
|
|
|
block_t sit_blocks; /* # of blocks used by SIT area */
|
|
|
|
block_t written_valid_blocks; /* # of valid blocks in main area */
|
|
|
|
char *sit_bitmap; /* SIT bitmap pointer */
|
2017-01-07 03:52:34 -07:00
|
|
|
#ifdef CONFIG_F2FS_CHECK_FS
|
|
|
|
char *sit_bitmap_mir; /* SIT bitmap mirror */
|
|
|
|
#endif
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
unsigned int bitmap_size; /* SIT bitmap size */
|
|
|
|
|
2015-02-10 17:44:29 -07:00
|
|
|
unsigned long *tmp_map; /* bitmap for temporal use */
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
unsigned long *dirty_sentries_bitmap; /* bitmap for dirty sentries */
|
|
|
|
unsigned int dirty_sentries; /* # of dirty sentries */
|
|
|
|
unsigned int sents_per_block; /* # of SIT entries per block */
|
|
|
|
struct mutex sentry_lock; /* to protect SIT cache */
|
|
|
|
struct seg_entry *sentries; /* SIT segment-level cache */
|
|
|
|
struct sec_entry *sec_entries; /* SIT section-level cache */
|
|
|
|
|
|
|
|
/* for cost-benefit algorithm in cleaning procedure */
|
|
|
|
unsigned long long elapsed_time; /* elapsed time after mount */
|
|
|
|
unsigned long long mounted_time; /* mount time */
|
|
|
|
unsigned long long min_mtime; /* min. modification time */
|
|
|
|
unsigned long long max_mtime; /* max. modification time */
|
|
|
|
};
|
|
|
|
|
|
|
|
struct free_segmap_info {
|
|
|
|
unsigned int start_segno; /* start segment number logically */
|
|
|
|
unsigned int free_segments; /* # of free segments */
|
|
|
|
unsigned int free_sections; /* # of free sections */
|
2015-02-11 03:20:38 -07:00
|
|
|
spinlock_t segmap_lock; /* free segmap lock */
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
unsigned long *free_segmap; /* free segment bitmap */
|
|
|
|
unsigned long *free_secmap; /* free section bitmap */
|
|
|
|
};
|
|
|
|
|
|
|
|
/* Notice: The order of dirty type is same with CURSEG_XXX in f2fs.h */
|
|
|
|
enum dirty_type {
|
|
|
|
DIRTY_HOT_DATA, /* dirty segments assigned as hot data logs */
|
|
|
|
DIRTY_WARM_DATA, /* dirty segments assigned as warm data logs */
|
|
|
|
DIRTY_COLD_DATA, /* dirty segments assigned as cold data logs */
|
|
|
|
DIRTY_HOT_NODE, /* dirty segments assigned as hot node logs */
|
|
|
|
DIRTY_WARM_NODE, /* dirty segments assigned as warm node logs */
|
|
|
|
DIRTY_COLD_NODE, /* dirty segments assigned as cold node logs */
|
|
|
|
DIRTY, /* to count # of dirty segments */
|
|
|
|
PRE, /* to count # of entirely obsolete segments */
|
|
|
|
NR_DIRTY_TYPE
|
|
|
|
};
|
|
|
|
|
|
|
|
struct dirty_seglist_info {
|
|
|
|
const struct victim_selection *v_ops; /* victim selction operation */
|
|
|
|
unsigned long *dirty_segmap[NR_DIRTY_TYPE];
|
|
|
|
struct mutex seglist_lock; /* lock for segment bitmaps */
|
|
|
|
int nr_dirty[NR_DIRTY_TYPE]; /* # of dirty segments */
|
2013-03-30 22:26:03 -06:00
|
|
|
unsigned long *victim_secmap; /* background GC victims */
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
};
|
|
|
|
|
|
|
|
/* victim selection function for cleaning and SSR */
|
|
|
|
struct victim_selection {
|
|
|
|
int (*get_victim)(struct f2fs_sb_info *, unsigned int *,
|
|
|
|
int, int, char);
|
|
|
|
};
|
|
|
|
|
|
|
|
/* for active log information */
|
|
|
|
struct curseg_info {
|
|
|
|
struct mutex curseg_mutex; /* lock for consistency */
|
|
|
|
struct f2fs_summary_block *sum_blk; /* cached summary block */
|
f2fs: split journal cache from curseg cache
In curseg cache, f2fs caches two different parts:
- datas of current summay block, i.e. summary entries, footer info.
- journal info, i.e. sparse nat/sit entries or io stat info.
With this approach, 1) it may cause higher lock contention when we access
or update both of the parts of cache since we use the same mutex lock
curseg_mutex to protect the cache. 2) current summary block with last
journal info will be writebacked into device as a normal summary block
when flushing, however, we treat journal info as valid one only in current
summary, so most normal summary blocks contain junk journal data, it wastes
remaining space of summary block.
So, in order to fix above issues, we split curseg cache into two parts:
a) current summary block, protected by original mutex lock curseg_mutex
b) journal cache, protected by newly introduced r/w semaphore journal_rwsem
When loading curseg cache during ->mount, we store summary info and
journal info into different caches; When doing checkpoint, we combine
datas of two cache into current summary block for persisting.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-02-19 03:08:46 -07:00
|
|
|
struct rw_semaphore journal_rwsem; /* protect journal area */
|
|
|
|
struct f2fs_journal *journal; /* cached journal info */
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
unsigned char alloc_type; /* current allocation type */
|
|
|
|
unsigned int segno; /* current segment number */
|
|
|
|
unsigned short next_blkoff; /* next block offset to write */
|
|
|
|
unsigned int zone; /* current zone number */
|
|
|
|
unsigned int next_segno; /* preallocated segment */
|
|
|
|
};
|
|
|
|
|
f2fs: refactor flush_sit_entries codes for reducing SIT writes
In commit aec71382c681 ("f2fs: refactor flush_nat_entries codes for reducing NAT
writes"), we descripte the issue as below:
"Although building NAT journal in cursum reduce the read/write work for NAT
block, but previous design leave us lower performance when write checkpoint
frequently for these cases:
1. if journal in cursum has already full, it's a bit of waste that we flush all
nat entries to page for persistence, but not to cache any entries.
2. if journal in cursum is not full, we fill nat entries to journal util
journal is full, then flush the left dirty entries to disk without merge
journaled entries, so these journaled entries may be flushed to disk at next
checkpoint but lost chance to flushed last time."
Actually, we have the same problem in using SIT journal area.
In this patch, firstly we will update sit journal with dirty entries as many as
possible. Secondly if there is no space in sit journal, we will remove all
entries in journal and walk through the whole dirty entry bitmap of sit,
accounting dirty sit entries located in same SIT block to sit entry set. All
entry sets are linked to list sit_entry_set in sm_info, sorted ascending order
by count of entries in set. Later we flush entries in set which have fewest
entries into journal as many as we can, and then flush dense set with merged
entries to disk.
In this way we can use sit journal area more effectively, also we will reduce
SIT update, result in gaining in performance and saving lifetime of flash
device.
In my testing environment, it shows this patch can help to reduce SIT block
update obviously.
virtual machine + hard disk:
fsstress -p 20 -n 400 -l 5
sit page num cp count sit pages/cp
based 2006.50 1349.75 1.486
patched 1566.25 1463.25 1.070
Our latency of merging op is small when handling a great number of dirty SIT
entries in flush_sit_entries:
latency(ns) dirty sit count
36038 2151
49168 2123
37174 2232
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2014-09-04 04:13:01 -06:00
|
|
|
struct sit_entry_set {
|
|
|
|
struct list_head set_list; /* link with all sit sets */
|
|
|
|
unsigned int start_segno; /* start segno of sits in set */
|
|
|
|
unsigned int entry_cnt; /* the # of sit entries in set */
|
|
|
|
};
|
|
|
|
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
/*
|
|
|
|
* inline functions
|
|
|
|
*/
|
|
|
|
static inline struct curseg_info *CURSEG_I(struct f2fs_sb_info *sbi, int type)
|
|
|
|
{
|
|
|
|
return (struct curseg_info *)(SM_I(sbi)->curseg_array + type);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline struct seg_entry *get_seg_entry(struct f2fs_sb_info *sbi,
|
|
|
|
unsigned int segno)
|
|
|
|
{
|
|
|
|
struct sit_info *sit_i = SIT_I(sbi);
|
|
|
|
return &sit_i->sentries[segno];
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline struct sec_entry *get_sec_entry(struct f2fs_sb_info *sbi,
|
|
|
|
unsigned int segno)
|
|
|
|
{
|
|
|
|
struct sit_info *sit_i = SIT_I(sbi);
|
|
|
|
return &sit_i->sec_entries[GET_SECNO(sbi, segno)];
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline unsigned int get_valid_blocks(struct f2fs_sb_info *sbi,
|
|
|
|
unsigned int segno, int section)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* In order to get # of valid blocks in a section instantly from many
|
|
|
|
* segments, f2fs manages two counting structures separately.
|
|
|
|
*/
|
|
|
|
if (section > 1)
|
|
|
|
return get_sec_entry(sbi, segno)->valid_blocks;
|
|
|
|
else
|
|
|
|
return get_seg_entry(sbi, segno)->valid_blocks;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void seg_info_from_raw_sit(struct seg_entry *se,
|
|
|
|
struct f2fs_sit_entry *rs)
|
|
|
|
{
|
|
|
|
se->valid_blocks = GET_SIT_VBLOCKS(rs);
|
|
|
|
se->ckpt_valid_blocks = GET_SIT_VBLOCKS(rs);
|
|
|
|
memcpy(se->cur_valid_map, rs->valid_map, SIT_VBLOCK_MAP_SIZE);
|
|
|
|
memcpy(se->ckpt_valid_map, rs->valid_map, SIT_VBLOCK_MAP_SIZE);
|
2017-01-07 03:51:01 -07:00
|
|
|
#ifdef CONFIG_F2FS_CHECK_FS
|
|
|
|
memcpy(se->cur_valid_map_mir, rs->valid_map, SIT_VBLOCK_MAP_SIZE);
|
|
|
|
#endif
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
se->type = GET_SIT_TYPE(rs);
|
|
|
|
se->mtime = le64_to_cpu(rs->mtime);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void seg_info_to_raw_sit(struct seg_entry *se,
|
|
|
|
struct f2fs_sit_entry *rs)
|
|
|
|
{
|
|
|
|
unsigned short raw_vblocks = (se->type << SIT_VBLOCKS_SHIFT) |
|
|
|
|
se->valid_blocks;
|
|
|
|
rs->vblocks = cpu_to_le16(raw_vblocks);
|
|
|
|
memcpy(rs->valid_map, se->cur_valid_map, SIT_VBLOCK_MAP_SIZE);
|
|
|
|
memcpy(se->ckpt_valid_map, rs->valid_map, SIT_VBLOCK_MAP_SIZE);
|
|
|
|
se->ckpt_valid_blocks = se->valid_blocks;
|
|
|
|
rs->mtime = cpu_to_le64(se->mtime);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline unsigned int find_next_inuse(struct free_segmap_info *free_i,
|
|
|
|
unsigned int max, unsigned int segno)
|
|
|
|
{
|
|
|
|
unsigned int ret;
|
2015-02-11 03:20:38 -07:00
|
|
|
spin_lock(&free_i->segmap_lock);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
ret = find_next_bit(free_i->free_segmap, max, segno);
|
2015-02-11 03:20:38 -07:00
|
|
|
spin_unlock(&free_i->segmap_lock);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void __set_free(struct f2fs_sb_info *sbi, unsigned int segno)
|
|
|
|
{
|
|
|
|
struct free_segmap_info *free_i = FREE_I(sbi);
|
|
|
|
unsigned int secno = segno / sbi->segs_per_sec;
|
|
|
|
unsigned int start_segno = secno * sbi->segs_per_sec;
|
|
|
|
unsigned int next;
|
|
|
|
|
2015-02-11 03:20:38 -07:00
|
|
|
spin_lock(&free_i->segmap_lock);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
clear_bit(segno, free_i->free_segmap);
|
|
|
|
free_i->free_segments++;
|
|
|
|
|
2015-03-06 00:00:55 -07:00
|
|
|
next = find_next_bit(free_i->free_segmap,
|
|
|
|
start_segno + sbi->segs_per_sec, start_segno);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
if (next >= start_segno + sbi->segs_per_sec) {
|
|
|
|
clear_bit(secno, free_i->free_secmap);
|
|
|
|
free_i->free_sections++;
|
|
|
|
}
|
2015-02-11 03:20:38 -07:00
|
|
|
spin_unlock(&free_i->segmap_lock);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline void __set_inuse(struct f2fs_sb_info *sbi,
|
|
|
|
unsigned int segno)
|
|
|
|
{
|
|
|
|
struct free_segmap_info *free_i = FREE_I(sbi);
|
|
|
|
unsigned int secno = segno / sbi->segs_per_sec;
|
|
|
|
set_bit(segno, free_i->free_segmap);
|
|
|
|
free_i->free_segments--;
|
|
|
|
if (!test_and_set_bit(secno, free_i->free_secmap))
|
|
|
|
free_i->free_sections--;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void __set_test_and_free(struct f2fs_sb_info *sbi,
|
|
|
|
unsigned int segno)
|
|
|
|
{
|
|
|
|
struct free_segmap_info *free_i = FREE_I(sbi);
|
|
|
|
unsigned int secno = segno / sbi->segs_per_sec;
|
|
|
|
unsigned int start_segno = secno * sbi->segs_per_sec;
|
|
|
|
unsigned int next;
|
|
|
|
|
2015-02-11 03:20:38 -07:00
|
|
|
spin_lock(&free_i->segmap_lock);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
if (test_and_clear_bit(segno, free_i->free_segmap)) {
|
|
|
|
free_i->free_segments++;
|
|
|
|
|
2014-07-14 02:45:15 -06:00
|
|
|
next = find_next_bit(free_i->free_segmap,
|
|
|
|
start_segno + sbi->segs_per_sec, start_segno);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
if (next >= start_segno + sbi->segs_per_sec) {
|
|
|
|
if (test_and_clear_bit(secno, free_i->free_secmap))
|
|
|
|
free_i->free_sections++;
|
|
|
|
}
|
|
|
|
}
|
2015-02-11 03:20:38 -07:00
|
|
|
spin_unlock(&free_i->segmap_lock);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline void __set_test_and_inuse(struct f2fs_sb_info *sbi,
|
|
|
|
unsigned int segno)
|
|
|
|
{
|
|
|
|
struct free_segmap_info *free_i = FREE_I(sbi);
|
|
|
|
unsigned int secno = segno / sbi->segs_per_sec;
|
2015-02-11 03:20:38 -07:00
|
|
|
spin_lock(&free_i->segmap_lock);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
if (!test_and_set_bit(segno, free_i->free_segmap)) {
|
|
|
|
free_i->free_segments--;
|
|
|
|
if (!test_and_set_bit(secno, free_i->free_secmap))
|
|
|
|
free_i->free_sections--;
|
|
|
|
}
|
2015-02-11 03:20:38 -07:00
|
|
|
spin_unlock(&free_i->segmap_lock);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline void get_sit_bitmap(struct f2fs_sb_info *sbi,
|
|
|
|
void *dst_addr)
|
|
|
|
{
|
|
|
|
struct sit_info *sit_i = SIT_I(sbi);
|
2017-01-07 03:52:34 -07:00
|
|
|
|
|
|
|
#ifdef CONFIG_F2FS_CHECK_FS
|
|
|
|
if (memcmp(sit_i->sit_bitmap, sit_i->sit_bitmap_mir,
|
|
|
|
sit_i->bitmap_size))
|
|
|
|
f2fs_bug_on(sbi, 1);
|
|
|
|
#endif
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
memcpy(dst_addr, sit_i->sit_bitmap, sit_i->bitmap_size);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline block_t written_block_count(struct f2fs_sb_info *sbi)
|
|
|
|
{
|
2014-02-23 21:00:13 -07:00
|
|
|
return SIT_I(sbi)->written_valid_blocks;
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline unsigned int free_segments(struct f2fs_sb_info *sbi)
|
|
|
|
{
|
2014-02-23 21:00:13 -07:00
|
|
|
return FREE_I(sbi)->free_segments;
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline int reserved_segments(struct f2fs_sb_info *sbi)
|
|
|
|
{
|
|
|
|
return SM_I(sbi)->reserved_segments;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline unsigned int free_sections(struct f2fs_sb_info *sbi)
|
|
|
|
{
|
2014-02-23 21:00:13 -07:00
|
|
|
return FREE_I(sbi)->free_sections;
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline unsigned int prefree_segments(struct f2fs_sb_info *sbi)
|
|
|
|
{
|
|
|
|
return DIRTY_I(sbi)->nr_dirty[PRE];
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline unsigned int dirty_segments(struct f2fs_sb_info *sbi)
|
|
|
|
{
|
|
|
|
return DIRTY_I(sbi)->nr_dirty[DIRTY_HOT_DATA] +
|
|
|
|
DIRTY_I(sbi)->nr_dirty[DIRTY_WARM_DATA] +
|
|
|
|
DIRTY_I(sbi)->nr_dirty[DIRTY_COLD_DATA] +
|
|
|
|
DIRTY_I(sbi)->nr_dirty[DIRTY_HOT_NODE] +
|
|
|
|
DIRTY_I(sbi)->nr_dirty[DIRTY_WARM_NODE] +
|
|
|
|
DIRTY_I(sbi)->nr_dirty[DIRTY_COLD_NODE];
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int overprovision_segments(struct f2fs_sb_info *sbi)
|
|
|
|
{
|
|
|
|
return SM_I(sbi)->ovp_segments;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int overprovision_sections(struct f2fs_sb_info *sbi)
|
|
|
|
{
|
|
|
|
return ((unsigned int) overprovision_segments(sbi)) / sbi->segs_per_sec;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int reserved_sections(struct f2fs_sb_info *sbi)
|
|
|
|
{
|
|
|
|
return ((unsigned int) reserved_segments(sbi)) / sbi->segs_per_sec;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline bool need_SSR(struct f2fs_sb_info *sbi)
|
|
|
|
{
|
2014-09-17 18:52:58 -06:00
|
|
|
int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES);
|
|
|
|
int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS);
|
2016-10-14 14:28:05 -06:00
|
|
|
int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA);
|
2016-06-03 20:29:38 -06:00
|
|
|
|
|
|
|
if (test_opt(sbi, LFS))
|
|
|
|
return false;
|
|
|
|
|
2016-10-14 14:28:05 -06:00
|
|
|
return free_sections(sbi) <= (node_secs + 2 * dent_secs + imeta_secs +
|
2014-09-17 18:52:58 -06:00
|
|
|
reserved_sections(sbi) + 1);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
}
|
|
|
|
|
2016-09-01 13:02:51 -06:00
|
|
|
static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi,
|
|
|
|
int freed, int needed)
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
{
|
2013-02-02 07:52:59 -07:00
|
|
|
int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES);
|
|
|
|
int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS);
|
2016-10-14 14:28:05 -06:00
|
|
|
int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA);
|
2016-05-20 12:10:10 -06:00
|
|
|
|
2015-01-28 02:48:42 -07:00
|
|
|
if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
|
2012-12-21 01:20:21 -07:00
|
|
|
return false;
|
|
|
|
|
2016-09-01 13:02:51 -06:00
|
|
|
return (free_sections(sbi) + freed) <=
|
2016-10-14 14:28:05 -06:00
|
|
|
(node_secs + 2 * dent_secs + imeta_secs +
|
|
|
|
reserved_sections(sbi) + needed);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
}
|
|
|
|
|
2013-10-23 22:31:34 -06:00
|
|
|
static inline bool excess_prefree_segs(struct f2fs_sb_info *sbi)
|
|
|
|
{
|
2014-01-17 13:44:39 -07:00
|
|
|
return prefree_segments(sbi) > SM_I(sbi)->rec_prefree_segments;
|
2013-10-23 22:31:34 -06:00
|
|
|
}
|
|
|
|
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
static inline int utilization(struct f2fs_sb_info *sbi)
|
|
|
|
{
|
2014-01-17 13:44:39 -07:00
|
|
|
return div_u64((u64)valid_user_blocks(sbi) * 100,
|
|
|
|
sbi->user_block_count);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Sometimes f2fs may be better to drop out-of-place update policy.
|
2013-11-06 21:13:42 -07:00
|
|
|
* And, users can control the policy through sysfs entries.
|
|
|
|
* There are five policies with triggering conditions as follows.
|
|
|
|
* F2FS_IPU_FORCE - all the time,
|
|
|
|
* F2FS_IPU_SSR - if SSR mode is activated,
|
|
|
|
* F2FS_IPU_UTIL - if FS utilization is over threashold,
|
|
|
|
* F2FS_IPU_SSR_UTIL - if SSR mode is activated and FS utilization is over
|
|
|
|
* threashold,
|
2014-09-10 17:53:02 -06:00
|
|
|
* F2FS_IPU_FSYNC - activated in fsync path only for high performance flash
|
|
|
|
* storages. IPU will be triggered only if the # of dirty
|
|
|
|
* pages over min_fsync_blocks.
|
2013-11-06 21:13:42 -07:00
|
|
|
* F2FS_IPUT_DISABLE - disable IPU. (=default option)
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
*/
|
2013-11-06 21:13:42 -07:00
|
|
|
#define DEF_MIN_IPU_UTIL 70
|
2014-09-10 17:53:02 -06:00
|
|
|
#define DEF_MIN_FSYNC_BLOCKS 8
|
2013-11-06 21:13:42 -07:00
|
|
|
|
|
|
|
enum {
|
|
|
|
F2FS_IPU_FORCE,
|
|
|
|
F2FS_IPU_SSR,
|
|
|
|
F2FS_IPU_UTIL,
|
|
|
|
F2FS_IPU_SSR_UTIL,
|
2014-09-10 17:53:02 -06:00
|
|
|
F2FS_IPU_FSYNC,
|
2013-11-06 21:13:42 -07:00
|
|
|
};
|
|
|
|
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
static inline bool need_inplace_update(struct inode *inode)
|
|
|
|
{
|
2014-09-02 16:31:18 -06:00
|
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
2014-09-16 19:30:54 -06:00
|
|
|
unsigned int policy = SM_I(sbi)->ipu_policy;
|
2013-11-06 21:13:42 -07:00
|
|
|
|
|
|
|
/* IPU can be done only for the user data */
|
2014-10-06 18:39:50 -06:00
|
|
|
if (S_ISDIR(inode->i_mode) || f2fs_is_atomic_file(inode))
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
return false;
|
2013-11-06 21:13:42 -07:00
|
|
|
|
2016-06-03 20:29:38 -06:00
|
|
|
if (test_opt(sbi, LFS))
|
|
|
|
return false;
|
|
|
|
|
2014-09-16 19:30:54 -06:00
|
|
|
if (policy & (0x1 << F2FS_IPU_FORCE))
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
return true;
|
2014-09-16 19:30:54 -06:00
|
|
|
if (policy & (0x1 << F2FS_IPU_SSR) && need_SSR(sbi))
|
|
|
|
return true;
|
|
|
|
if (policy & (0x1 << F2FS_IPU_UTIL) &&
|
|
|
|
utilization(sbi) > SM_I(sbi)->min_ipu_util)
|
|
|
|
return true;
|
|
|
|
if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && need_SSR(sbi) &&
|
|
|
|
utilization(sbi) > SM_I(sbi)->min_ipu_util)
|
|
|
|
return true;
|
|
|
|
|
|
|
|
/* this is only set during fdatasync */
|
|
|
|
if (policy & (0x1 << F2FS_IPU_FSYNC) &&
|
2016-05-20 11:13:22 -06:00
|
|
|
is_inode_flag_set(inode, FI_NEED_IPU))
|
2014-09-16 19:30:54 -06:00
|
|
|
return true;
|
|
|
|
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline unsigned int curseg_segno(struct f2fs_sb_info *sbi,
|
|
|
|
int type)
|
|
|
|
{
|
|
|
|
struct curseg_info *curseg = CURSEG_I(sbi, type);
|
|
|
|
return curseg->segno;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline unsigned char curseg_alloc_type(struct f2fs_sb_info *sbi,
|
|
|
|
int type)
|
|
|
|
{
|
|
|
|
struct curseg_info *curseg = CURSEG_I(sbi, type);
|
|
|
|
return curseg->alloc_type;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline unsigned short curseg_blkoff(struct f2fs_sb_info *sbi, int type)
|
|
|
|
{
|
|
|
|
struct curseg_info *curseg = CURSEG_I(sbi, type);
|
|
|
|
return curseg->next_blkoff;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void check_seg_range(struct f2fs_sb_info *sbi, unsigned int segno)
|
|
|
|
{
|
2015-07-27 04:17:59 -06:00
|
|
|
f2fs_bug_on(sbi, segno > TOTAL_SEGS(sbi) - 1);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline void verify_block_addr(struct f2fs_sb_info *sbi, block_t blk_addr)
|
|
|
|
{
|
2016-07-27 22:12:38 -06:00
|
|
|
BUG_ON(blk_addr < SEG0_BLKADDR(sbi)
|
|
|
|
|| blk_addr >= MAX_BLKADDR(sbi));
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2014-08-06 08:22:50 -06:00
|
|
|
* Summary block is always treated as an invalid block
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
*/
|
|
|
|
static inline void check_block_count(struct f2fs_sb_info *sbi,
|
|
|
|
int segno, struct f2fs_sit_entry *raw_sit)
|
|
|
|
{
|
2015-08-11 17:01:30 -06:00
|
|
|
#ifdef CONFIG_F2FS_CHECK_FS
|
2013-10-29 00:50:40 -06:00
|
|
|
bool is_valid = test_bit_le(0, raw_sit->valid_map) ? true : false;
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
int valid_blocks = 0;
|
2013-10-29 00:50:40 -06:00
|
|
|
int cur_pos = 0, next_pos;
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
|
|
|
|
/* check bitmap with valid block count */
|
2013-10-29 00:50:40 -06:00
|
|
|
do {
|
|
|
|
if (is_valid) {
|
|
|
|
next_pos = find_next_zero_bit_le(&raw_sit->valid_map,
|
|
|
|
sbi->blocks_per_seg,
|
|
|
|
cur_pos);
|
|
|
|
valid_blocks += next_pos - cur_pos;
|
|
|
|
} else
|
|
|
|
next_pos = find_next_bit_le(&raw_sit->valid_map,
|
|
|
|
sbi->blocks_per_seg,
|
|
|
|
cur_pos);
|
|
|
|
cur_pos = next_pos;
|
|
|
|
is_valid = !is_valid;
|
|
|
|
} while (cur_pos < sbi->blocks_per_seg);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
BUG_ON(GET_SIT_VBLOCKS(raw_sit) != valid_blocks);
|
2013-10-29 00:14:54 -06:00
|
|
|
#endif
|
2015-08-11 17:01:30 -06:00
|
|
|
/* check segment usage, and check boundary of a given segment number */
|
|
|
|
f2fs_bug_on(sbi, GET_SIT_VBLOCKS(raw_sit) > sbi->blocks_per_seg
|
|
|
|
|| segno > TOTAL_SEGS(sbi) - 1);
|
2015-07-27 04:17:59 -06:00
|
|
|
}
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
|
|
|
|
static inline pgoff_t current_sit_addr(struct f2fs_sb_info *sbi,
|
|
|
|
unsigned int start)
|
|
|
|
{
|
|
|
|
struct sit_info *sit_i = SIT_I(sbi);
|
2014-09-04 04:11:47 -06:00
|
|
|
unsigned int offset = SIT_BLOCK_OFFSET(start);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
block_t blk_addr = sit_i->sit_base_addr + offset;
|
|
|
|
|
|
|
|
check_seg_range(sbi, start);
|
|
|
|
|
2017-01-07 03:52:34 -07:00
|
|
|
#ifdef CONFIG_F2FS_CHECK_FS
|
|
|
|
if (f2fs_test_bit(offset, sit_i->sit_bitmap) !=
|
|
|
|
f2fs_test_bit(offset, sit_i->sit_bitmap_mir))
|
|
|
|
f2fs_bug_on(sbi, 1);
|
|
|
|
#endif
|
|
|
|
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
/* calculate sit block address */
|
|
|
|
if (f2fs_test_bit(offset, sit_i->sit_bitmap))
|
|
|
|
blk_addr += sit_i->sit_blocks;
|
|
|
|
|
|
|
|
return blk_addr;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline pgoff_t next_sit_addr(struct f2fs_sb_info *sbi,
|
|
|
|
pgoff_t block_addr)
|
|
|
|
{
|
|
|
|
struct sit_info *sit_i = SIT_I(sbi);
|
|
|
|
block_addr -= sit_i->sit_base_addr;
|
|
|
|
if (block_addr < sit_i->sit_blocks)
|
|
|
|
block_addr += sit_i->sit_blocks;
|
|
|
|
else
|
|
|
|
block_addr -= sit_i->sit_blocks;
|
|
|
|
|
|
|
|
return block_addr + sit_i->sit_base_addr;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void set_to_next_sit(struct sit_info *sit_i, unsigned int start)
|
|
|
|
{
|
2014-09-04 04:11:47 -06:00
|
|
|
unsigned int block_off = SIT_BLOCK_OFFSET(start);
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
|
2014-10-20 03:45:50 -06:00
|
|
|
f2fs_change_bit(block_off, sit_i->sit_bitmap);
|
2017-01-07 03:52:34 -07:00
|
|
|
#ifdef CONFIG_F2FS_CHECK_FS
|
|
|
|
f2fs_change_bit(block_off, sit_i->sit_bitmap_mir);
|
|
|
|
#endif
|
f2fs: add superblock and major in-memory structure
This adds the following major in-memory structures in f2fs.
- f2fs_sb_info:
contains f2fs-specific information, two special inode pointers for node and
meta address spaces, and orphan inode management.
- f2fs_inode_info:
contains vfs_inode and other fs-specific information.
- f2fs_nm_info:
contains node manager information such as NAT entry cache, free nid list,
and NAT page management.
- f2fs_node_info:
represents a node as node id, inode number, block address, and its version.
- f2fs_sm_info:
contains segment manager information such as SIT entry cache, free segment
map, current active logs, dirty segment management, and segment utilization.
The specific structures are sit_info, free_segmap_info, dirty_seglist_info,
curseg_info.
In addition, add F2FS_SUPER_MAGIC in magic.h.
Signed-off-by: Chul Lee <chur.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2012-11-27 21:37:31 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline unsigned long long get_mtime(struct f2fs_sb_info *sbi)
|
|
|
|
{
|
|
|
|
struct sit_info *sit_i = SIT_I(sbi);
|
|
|
|
return sit_i->elapsed_time + CURRENT_TIME_SEC.tv_sec -
|
|
|
|
sit_i->mounted_time;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void set_summary(struct f2fs_summary *sum, nid_t nid,
|
|
|
|
unsigned int ofs_in_node, unsigned char version)
|
|
|
|
{
|
|
|
|
sum->nid = cpu_to_le32(nid);
|
|
|
|
sum->ofs_in_node = cpu_to_le16(ofs_in_node);
|
|
|
|
sum->version = version;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline block_t start_sum_block(struct f2fs_sb_info *sbi)
|
|
|
|
{
|
|
|
|
return __start_cp_addr(sbi) +
|
|
|
|
le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline block_t sum_blk_addr(struct f2fs_sb_info *sbi, int base, int type)
|
|
|
|
{
|
|
|
|
return __start_cp_addr(sbi) +
|
|
|
|
le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_total_block_count)
|
|
|
|
- (base + 1) + type;
|
|
|
|
}
|
2013-03-30 22:26:03 -06:00
|
|
|
|
f2fs: add ovp valid_blocks check for bg gc victim to fg_gc
For foreground gc, greedy algorithm should be adapted, which makes
this formula work well:
(2 * (100 / config.overprovision + 1) + 6)
But currently, we fg_gc have a prior to select bg_gc victim segments to gc
first, these victims are selected by cost-benefit algorithm, we can't guarantee
such segments have the small valid blocks, which may destroy the f2fs rule, on
the worstest case, would consume all the free segments.
This patch fix this by add a filter in check_bg_victims, if segment's has # of
valid blocks over overprovision ratio, skip such segments.
Cc: <stable@vger.kernel.org>
Signed-off-by: Hou Pengyang <houpengyang@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-02-16 05:34:31 -07:00
|
|
|
static inline bool no_fggc_candidate(struct f2fs_sb_info *sbi,
|
|
|
|
unsigned int secno)
|
|
|
|
{
|
|
|
|
if (get_valid_blocks(sbi, secno, sbi->segs_per_sec) >=
|
|
|
|
sbi->fggc_threshold)
|
|
|
|
return true;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2013-03-30 22:26:03 -06:00
|
|
|
static inline bool sec_usage_check(struct f2fs_sb_info *sbi, unsigned int secno)
|
|
|
|
{
|
|
|
|
if (IS_CURSEC(sbi, secno) || (sbi->cur_victim_sec == secno))
|
|
|
|
return true;
|
|
|
|
return false;
|
|
|
|
}
|
2013-04-29 01:58:39 -06:00
|
|
|
|
2014-03-17 21:40:49 -06:00
|
|
|
/*
|
|
|
|
* It is very important to gather dirty pages and write at once, so that we can
|
|
|
|
* submit a big bio without interfering other data writes.
|
|
|
|
* By default, 512 pages for directory data,
|
2017-02-25 04:32:21 -07:00
|
|
|
* 512 pages (2MB) * 8 for nodes, and
|
|
|
|
* 256 pages * 8 for meta are set.
|
2014-03-17 21:40:49 -06:00
|
|
|
*/
|
|
|
|
static inline int nr_pages_to_skip(struct f2fs_sb_info *sbi, int type)
|
|
|
|
{
|
writeback: move bandwidth related fields from backing_dev_info into bdi_writeback
Currently, a bdi (backing_dev_info) embeds single wb (bdi_writeback)
and the role of the separation is unclear. For cgroup support for
writeback IOs, a bdi will be updated to host multiple wb's where each
wb serves writeback IOs of a different cgroup on the bdi. To achieve
that, a wb should carry all states necessary for servicing writeback
IOs for a cgroup independently.
This patch moves bandwidth related fields from backing_dev_info into
bdi_writeback.
* The moved fields are: bw_time_stamp, dirtied_stamp, written_stamp,
write_bandwidth, avg_write_bandwidth, dirty_ratelimit,
balanced_dirty_ratelimit, completions and dirty_exceeded.
* writeback_chunk_size() and over_bground_thresh() now take @wb
instead of @bdi.
* bdi_writeout_fraction(bdi, ...) -> wb_writeout_fraction(wb, ...)
bdi_dirty_limit(bdi, ...) -> wb_dirty_limit(wb, ...)
bdi_position_ration(bdi, ...) -> wb_position_ratio(wb, ...)
bdi_update_writebandwidth(bdi, ...) -> wb_update_write_bandwidth(wb, ...)
[__]bdi_update_bandwidth(bdi, ...) -> [__]wb_update_bandwidth(wb, ...)
bdi_{max|min}_pause(bdi, ...) -> wb_{max|min}_pause(wb, ...)
bdi_dirty_limits(bdi, ...) -> wb_dirty_limits(wb, ...)
* Init/exits of the relocated fields are moved to bdi_wb_init/exit()
respectively. Note that explicit zeroing is dropped in the process
as wb's are cleared in entirety anyway.
* As there's still only one bdi_writeback per backing_dev_info, all
uses of bdi->stat[] are mechanically replaced with bdi->wb.stat[]
introducing no behavior changes.
v2: Typo in description fixed as suggested by Jan.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-22 15:13:28 -06:00
|
|
|
if (sbi->sb->s_bdi->wb.dirty_exceeded)
|
2014-11-06 18:23:08 -07:00
|
|
|
return 0;
|
|
|
|
|
2015-10-08 11:40:07 -06:00
|
|
|
if (type == DATA)
|
|
|
|
return sbi->blocks_per_seg;
|
|
|
|
else if (type == NODE)
|
2016-06-16 17:44:11 -06:00
|
|
|
return 8 * sbi->blocks_per_seg;
|
2014-03-17 21:40:49 -06:00
|
|
|
else if (type == META)
|
2016-10-18 12:07:45 -06:00
|
|
|
return 8 * BIO_MAX_PAGES;
|
2014-03-17 21:40:49 -06:00
|
|
|
else
|
|
|
|
return 0;
|
|
|
|
}
|
2014-03-17 22:47:11 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* When writing pages, it'd better align nr_to_write for segment size.
|
|
|
|
*/
|
|
|
|
static inline long nr_pages_to_write(struct f2fs_sb_info *sbi, int type,
|
|
|
|
struct writeback_control *wbc)
|
|
|
|
{
|
|
|
|
long nr_to_write, desired;
|
|
|
|
|
|
|
|
if (wbc->sync_mode != WB_SYNC_NONE)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
nr_to_write = wbc->nr_to_write;
|
2016-10-18 12:07:45 -06:00
|
|
|
desired = BIO_MAX_PAGES;
|
2016-05-25 18:17:56 -06:00
|
|
|
if (type == NODE)
|
2016-10-18 12:07:45 -06:00
|
|
|
desired <<= 1;
|
2014-03-17 22:47:11 -06:00
|
|
|
|
|
|
|
wbc->nr_to_write = desired;
|
|
|
|
return desired - nr_to_write;
|
|
|
|
}
|