2013-11-10 08:13:19 -07:00
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/*
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* fs/f2fs/inline.c
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* Copyright (c) 2013, Intel Corporation
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* Authors: Huajun Li <huajun.li@intel.com>
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* Haicheng Li <haicheng.li@intel.com>
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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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#include <linux/fs.h>
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#include <linux/f2fs_fs.h>
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#include "f2fs.h"
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bool f2fs_may_inline(struct inode *inode)
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{
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block_t nr_blocks;
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loff_t i_size;
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2014-09-02 16:31:18 -06:00
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if (!test_opt(F2FS_I_SB(inode), INLINE_DATA))
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2013-11-10 08:13:19 -07:00
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return false;
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2014-10-06 18:39:50 -06:00
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if (f2fs_is_atomic_file(inode))
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return false;
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2013-11-10 08:13:19 -07:00
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nr_blocks = F2FS_I(inode)->i_xattr_nid ? 3 : 2;
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if (inode->i_blocks > nr_blocks)
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return false;
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i_size = i_size_read(inode);
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if (i_size > MAX_INLINE_DATA)
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return false;
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return true;
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}
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int f2fs_read_inline_data(struct inode *inode, struct page *page)
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{
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struct page *ipage;
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void *src_addr, *dst_addr;
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2013-12-30 03:36:23 -07:00
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if (page->index) {
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zero_user_segment(page, 0, PAGE_CACHE_SIZE);
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goto out;
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}
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2014-09-02 16:31:18 -06:00
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ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino);
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2014-03-29 01:30:40 -06:00
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if (IS_ERR(ipage)) {
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unlock_page(page);
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2013-11-10 08:13:19 -07:00
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return PTR_ERR(ipage);
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2014-03-29 01:30:40 -06:00
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}
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2013-11-10 08:13:19 -07:00
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2013-12-29 18:29:06 -07:00
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zero_user_segment(page, MAX_INLINE_DATA, PAGE_CACHE_SIZE);
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2013-11-10 08:13:19 -07:00
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/* Copy the whole inline data block */
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src_addr = inline_data_addr(ipage);
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2014-10-19 00:41:38 -06:00
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dst_addr = kmap_atomic(page);
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2013-11-10 08:13:19 -07:00
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memcpy(dst_addr, src_addr, MAX_INLINE_DATA);
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2014-10-19 00:41:38 -06:00
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kunmap_atomic(dst_addr);
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2013-11-10 08:13:19 -07:00
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f2fs_put_page(ipage, 1);
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2013-12-30 03:36:23 -07:00
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out:
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2013-11-10 08:13:19 -07:00
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SetPageUptodate(page);
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unlock_page(page);
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return 0;
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}
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static int __f2fs_convert_inline_data(struct inode *inode, struct page *page)
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{
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2014-08-18 15:41:11 -06:00
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int err = 0;
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2013-11-10 08:13:19 -07:00
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struct page *ipage;
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struct dnode_of_data dn;
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void *src_addr, *dst_addr;
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block_t new_blk_addr;
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2014-09-02 16:31:18 -06:00
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struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
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2013-11-10 08:13:19 -07:00
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struct f2fs_io_info fio = {
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.type = DATA,
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.rw = WRITE_SYNC | REQ_PRIO,
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};
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f2fs_lock_op(sbi);
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ipage = get_node_page(sbi, inode->i_ino);
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2014-04-15 23:22:50 -06:00
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if (IS_ERR(ipage)) {
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err = PTR_ERR(ipage);
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goto out;
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}
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2013-11-10 08:13:19 -07:00
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2014-08-18 15:41:11 -06:00
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/* someone else converted inline_data already */
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if (!f2fs_has_inline_data(inode))
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goto out;
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2013-11-10 08:13:19 -07:00
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/*
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* i_addr[0] is not used for inline data,
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* so reserving new block will not destroy inline data
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*/
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2013-12-27 01:04:17 -07:00
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set_new_dnode(&dn, inode, ipage, NULL, 0);
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2013-11-10 08:13:19 -07:00
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err = f2fs_reserve_block(&dn, 0);
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2014-04-15 23:22:50 -06:00
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if (err)
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goto out;
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2013-11-10 08:13:19 -07:00
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2014-04-29 02:35:10 -06:00
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f2fs_wait_on_page_writeback(page, DATA);
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2013-12-29 18:29:06 -07:00
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zero_user_segment(page, MAX_INLINE_DATA, PAGE_CACHE_SIZE);
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2013-11-10 08:13:19 -07:00
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/* Copy the whole inline data block */
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src_addr = inline_data_addr(ipage);
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2014-10-19 00:41:38 -06:00
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dst_addr = kmap_atomic(page);
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2013-11-10 08:13:19 -07:00
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memcpy(dst_addr, src_addr, MAX_INLINE_DATA);
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2014-10-19 00:41:38 -06:00
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kunmap_atomic(dst_addr);
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2013-12-26 20:28:59 -07:00
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SetPageUptodate(page);
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2013-11-10 08:13:19 -07:00
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/* write data page to try to make data consistent */
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set_page_writeback(page);
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write_data_page(page, &dn, &new_blk_addr, &fio);
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update_extent_cache(new_blk_addr, &dn);
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2014-01-10 00:26:14 -07:00
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f2fs_wait_on_page_writeback(page, DATA);
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2013-11-10 08:13:19 -07:00
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/* clear inline data and flag after data writeback */
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zero_user_segment(ipage, INLINE_DATA_OFFSET,
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INLINE_DATA_OFFSET + MAX_INLINE_DATA);
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clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
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2013-11-25 19:08:57 -07:00
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stat_dec_inline_inode(inode);
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2013-11-10 08:13:19 -07:00
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sync_inode_page(&dn);
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2013-12-27 01:04:17 -07:00
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f2fs_put_dnode(&dn);
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2014-04-15 23:22:50 -06:00
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out:
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2013-11-10 08:13:19 -07:00
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f2fs_unlock_op(sbi);
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return err;
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}
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2014-08-07 17:32:25 -06:00
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int f2fs_convert_inline_data(struct inode *inode, pgoff_t to_size,
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struct page *page)
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2013-11-10 08:13:19 -07:00
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{
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2014-08-07 17:32:25 -06:00
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struct page *new_page = page;
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2013-12-26 20:28:59 -07:00
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int err;
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2013-11-10 08:13:19 -07:00
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2013-12-26 20:28:59 -07:00
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if (!f2fs_has_inline_data(inode))
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return 0;
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else if (to_size <= MAX_INLINE_DATA)
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return 0;
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2013-11-10 08:13:19 -07:00
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2014-08-07 17:32:25 -06:00
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if (!page || page->index != 0) {
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new_page = grab_cache_page(inode->i_mapping, 0);
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if (!new_page)
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return -ENOMEM;
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}
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2013-11-10 08:13:19 -07:00
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2014-08-07 17:32:25 -06:00
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err = __f2fs_convert_inline_data(inode, new_page);
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if (!page || page->index != 0)
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f2fs_put_page(new_page, 1);
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2013-11-10 08:13:19 -07:00
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return err;
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}
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int f2fs_write_inline_data(struct inode *inode,
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2014-08-07 17:32:25 -06:00
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struct page *page, unsigned size)
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2013-11-10 08:13:19 -07:00
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{
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void *src_addr, *dst_addr;
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struct page *ipage;
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struct dnode_of_data dn;
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int err;
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set_new_dnode(&dn, inode, NULL, NULL, 0);
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err = get_dnode_of_data(&dn, 0, LOOKUP_NODE);
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if (err)
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return err;
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ipage = dn.inode_page;
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2014-10-15 11:16:54 -06:00
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/* Release any data block if it is allocated */
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if (!f2fs_has_inline_data(inode)) {
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int count = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode));
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truncate_data_blocks_range(&dn, count);
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set_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
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stat_inc_inline_inode(inode);
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}
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2014-04-29 02:28:32 -06:00
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f2fs_wait_on_page_writeback(ipage, NODE);
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2013-11-10 08:13:19 -07:00
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zero_user_segment(ipage, INLINE_DATA_OFFSET,
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INLINE_DATA_OFFSET + MAX_INLINE_DATA);
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2014-10-19 00:41:38 -06:00
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src_addr = kmap_atomic(page);
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2013-11-10 08:13:19 -07:00
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dst_addr = inline_data_addr(ipage);
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memcpy(dst_addr, src_addr, size);
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2014-10-19 00:41:38 -06:00
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kunmap_atomic(src_addr);
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2013-11-10 08:13:19 -07:00
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2014-07-25 08:40:59 -06:00
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set_inode_flag(F2FS_I(inode), FI_APPEND_WRITE);
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2013-11-10 08:13:19 -07:00
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sync_inode_page(&dn);
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f2fs_put_dnode(&dn);
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return 0;
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}
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2013-12-25 20:49:48 -07:00
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2014-04-28 19:03:03 -06:00
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void truncate_inline_data(struct inode *inode, u64 from)
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{
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struct page *ipage;
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if (from >= MAX_INLINE_DATA)
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return;
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2014-09-02 16:31:18 -06:00
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ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino);
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2014-04-28 19:03:03 -06:00
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if (IS_ERR(ipage))
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return;
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2014-04-29 02:28:32 -06:00
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f2fs_wait_on_page_writeback(ipage, NODE);
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2014-04-28 19:03:03 -06:00
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zero_user_segment(ipage, INLINE_DATA_OFFSET + from,
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INLINE_DATA_OFFSET + MAX_INLINE_DATA);
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set_page_dirty(ipage);
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f2fs_put_page(ipage, 1);
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}
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2014-08-07 17:57:17 -06:00
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bool recover_inline_data(struct inode *inode, struct page *npage)
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2013-12-25 20:49:48 -07:00
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{
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2014-09-02 16:31:18 -06:00
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struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
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2013-12-25 20:49:48 -07:00
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struct f2fs_inode *ri = NULL;
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void *src_addr, *dst_addr;
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struct page *ipage;
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/*
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* The inline_data recovery policy is as follows.
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* [prev.] [next] of inline_data flag
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* o o -> recover inline_data
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* o x -> remove inline_data, and then recover data blocks
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* x o -> remove inline_data, and then recover inline_data
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* x x -> recover data blocks
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*/
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if (IS_INODE(npage))
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ri = F2FS_INODE(npage);
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if (f2fs_has_inline_data(inode) &&
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2014-08-07 17:57:17 -06:00
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ri && (ri->i_inline & F2FS_INLINE_DATA)) {
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2013-12-25 20:49:48 -07:00
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process_inline:
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ipage = get_node_page(sbi, inode->i_ino);
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2014-09-02 16:52:58 -06:00
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f2fs_bug_on(sbi, IS_ERR(ipage));
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2013-12-25 20:49:48 -07:00
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2014-04-29 02:28:32 -06:00
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f2fs_wait_on_page_writeback(ipage, NODE);
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2013-12-25 20:49:48 -07:00
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src_addr = inline_data_addr(npage);
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dst_addr = inline_data_addr(ipage);
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memcpy(dst_addr, src_addr, MAX_INLINE_DATA);
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update_inode(inode, ipage);
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f2fs_put_page(ipage, 1);
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2014-08-07 17:57:17 -06:00
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return true;
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2013-12-25 20:49:48 -07:00
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}
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if (f2fs_has_inline_data(inode)) {
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ipage = get_node_page(sbi, inode->i_ino);
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2014-09-02 16:52:58 -06:00
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f2fs_bug_on(sbi, IS_ERR(ipage));
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2014-04-29 02:28:32 -06:00
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f2fs_wait_on_page_writeback(ipage, NODE);
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2013-12-25 20:49:48 -07:00
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zero_user_segment(ipage, INLINE_DATA_OFFSET,
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INLINE_DATA_OFFSET + MAX_INLINE_DATA);
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clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
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update_inode(inode, ipage);
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f2fs_put_page(ipage, 1);
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2014-08-07 17:57:17 -06:00
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} else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) {
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2014-08-14 17:32:54 -06:00
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truncate_blocks(inode, 0, false);
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2013-12-25 20:49:48 -07:00
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set_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
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goto process_inline;
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}
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2014-08-07 17:57:17 -06:00
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return false;
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2013-12-25 20:49:48 -07:00
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}
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2014-09-24 04:17:53 -06:00
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struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir,
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struct qstr *name, struct page **res_page)
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{
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struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
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2014-10-13 18:26:14 -06:00
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struct f2fs_inline_dentry *inline_dentry;
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2014-09-24 04:17:53 -06:00
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struct f2fs_dir_entry *de;
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2014-10-18 23:52:52 -06:00
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struct f2fs_dentry_ptr d;
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2014-10-13 18:26:14 -06:00
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struct page *ipage;
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2014-09-24 04:17:53 -06:00
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ipage = get_node_page(sbi, dir->i_ino);
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if (IS_ERR(ipage))
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return NULL;
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2014-10-13 18:26:14 -06:00
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inline_dentry = inline_data_addr(ipage);
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2014-09-24 04:17:53 -06:00
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2014-10-18 23:52:52 -06:00
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make_dentry_ptr(&d, (void *)inline_dentry, 2);
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de = find_target_dentry(name, NULL, &d);
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2014-09-24 04:17:53 -06:00
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unlock_page(ipage);
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2014-10-13 18:26:14 -06:00
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if (de)
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*res_page = ipage;
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else
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f2fs_put_page(ipage, 0);
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/*
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* For the most part, it should be a bug when name_len is zero.
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* We stop here for figuring out where the bugs has occurred.
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*/
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2014-10-18 23:52:52 -06:00
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f2fs_bug_on(sbi, d.max < 0);
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2014-09-24 04:17:53 -06:00
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return de;
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}
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|
|
struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *dir,
|
|
|
|
struct page **p)
|
|
|
|
{
|
|
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
|
|
|
|
struct page *ipage;
|
|
|
|
struct f2fs_dir_entry *de;
|
|
|
|
struct f2fs_inline_dentry *dentry_blk;
|
|
|
|
|
|
|
|
ipage = get_node_page(sbi, dir->i_ino);
|
|
|
|
if (IS_ERR(ipage))
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
dentry_blk = inline_data_addr(ipage);
|
|
|
|
de = &dentry_blk->dentry[1];
|
|
|
|
*p = ipage;
|
|
|
|
unlock_page(ipage);
|
|
|
|
return de;
|
|
|
|
}
|
|
|
|
|
|
|
|
int make_empty_inline_dir(struct inode *inode, struct inode *parent,
|
|
|
|
struct page *ipage)
|
|
|
|
{
|
|
|
|
struct f2fs_inline_dentry *dentry_blk;
|
2014-10-19 00:06:41 -06:00
|
|
|
struct f2fs_dentry_ptr d;
|
2014-09-24 04:17:53 -06:00
|
|
|
|
|
|
|
dentry_blk = inline_data_addr(ipage);
|
|
|
|
|
2014-10-19 00:06:41 -06:00
|
|
|
make_dentry_ptr(&d, (void *)dentry_blk, 2);
|
|
|
|
do_make_empty_dir(inode, parent, &d);
|
2014-09-24 04:17:53 -06:00
|
|
|
|
|
|
|
set_page_dirty(ipage);
|
|
|
|
|
|
|
|
/* update i_size to MAX_INLINE_DATA */
|
|
|
|
if (i_size_read(inode) < MAX_INLINE_DATA) {
|
|
|
|
i_size_write(inode, MAX_INLINE_DATA);
|
|
|
|
set_inode_flag(F2FS_I(inode), FI_UPDATE_DIR);
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage,
|
|
|
|
struct f2fs_inline_dentry *inline_dentry)
|
|
|
|
{
|
|
|
|
struct page *page;
|
|
|
|
struct dnode_of_data dn;
|
|
|
|
struct f2fs_dentry_block *dentry_blk;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
page = grab_cache_page(dir->i_mapping, 0);
|
|
|
|
if (!page)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
set_new_dnode(&dn, dir, ipage, NULL, 0);
|
|
|
|
err = f2fs_reserve_block(&dn, 0);
|
|
|
|
if (err)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
f2fs_wait_on_page_writeback(page, DATA);
|
|
|
|
zero_user_segment(page, 0, PAGE_CACHE_SIZE);
|
|
|
|
|
2014-10-19 00:41:38 -06:00
|
|
|
dentry_blk = kmap_atomic(page);
|
2014-09-24 04:17:53 -06:00
|
|
|
|
|
|
|
/* copy data from inline dentry block to new dentry block */
|
|
|
|
memcpy(dentry_blk->dentry_bitmap, inline_dentry->dentry_bitmap,
|
|
|
|
INLINE_DENTRY_BITMAP_SIZE);
|
|
|
|
memcpy(dentry_blk->dentry, inline_dentry->dentry,
|
|
|
|
sizeof(struct f2fs_dir_entry) * NR_INLINE_DENTRY);
|
|
|
|
memcpy(dentry_blk->filename, inline_dentry->filename,
|
|
|
|
NR_INLINE_DENTRY * F2FS_SLOT_LEN);
|
|
|
|
|
2014-10-19 00:41:38 -06:00
|
|
|
kunmap_atomic(dentry_blk);
|
2014-09-24 04:17:53 -06:00
|
|
|
SetPageUptodate(page);
|
|
|
|
set_page_dirty(page);
|
|
|
|
|
|
|
|
/* clear inline dir and flag after data writeback */
|
|
|
|
zero_user_segment(ipage, INLINE_DATA_OFFSET,
|
|
|
|
INLINE_DATA_OFFSET + MAX_INLINE_DATA);
|
2014-10-13 21:00:16 -06:00
|
|
|
stat_dec_inline_dir(dir);
|
2014-09-24 04:19:10 -06:00
|
|
|
clear_inode_flag(F2FS_I(dir), FI_INLINE_DENTRY);
|
2014-09-24 04:17:53 -06:00
|
|
|
|
|
|
|
if (i_size_read(dir) < PAGE_CACHE_SIZE) {
|
|
|
|
i_size_write(dir, PAGE_CACHE_SIZE);
|
|
|
|
set_inode_flag(F2FS_I(dir), FI_UPDATE_DIR);
|
|
|
|
}
|
|
|
|
|
|
|
|
sync_inode_page(&dn);
|
|
|
|
out:
|
|
|
|
f2fs_put_page(page, 1);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
int f2fs_add_inline_entry(struct inode *dir, const struct qstr *name,
|
|
|
|
struct inode *inode)
|
|
|
|
{
|
|
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
|
|
|
|
struct page *ipage;
|
|
|
|
unsigned int bit_pos;
|
|
|
|
f2fs_hash_t name_hash;
|
|
|
|
struct f2fs_dir_entry *de;
|
|
|
|
size_t namelen = name->len;
|
|
|
|
struct f2fs_inline_dentry *dentry_blk = NULL;
|
|
|
|
int slots = GET_DENTRY_SLOTS(namelen);
|
|
|
|
struct page *page;
|
|
|
|
int err = 0;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
name_hash = f2fs_dentry_hash(name);
|
|
|
|
|
|
|
|
ipage = get_node_page(sbi, dir->i_ino);
|
|
|
|
if (IS_ERR(ipage))
|
|
|
|
return PTR_ERR(ipage);
|
|
|
|
|
|
|
|
dentry_blk = inline_data_addr(ipage);
|
2014-10-13 17:28:13 -06:00
|
|
|
bit_pos = room_for_filename(&dentry_blk->dentry_bitmap,
|
|
|
|
slots, NR_INLINE_DENTRY);
|
2014-09-24 04:17:53 -06:00
|
|
|
if (bit_pos >= NR_INLINE_DENTRY) {
|
|
|
|
err = f2fs_convert_inline_dir(dir, ipage, dentry_blk);
|
|
|
|
if (!err)
|
|
|
|
err = -EAGAIN;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
down_write(&F2FS_I(inode)->i_sem);
|
2014-10-13 20:42:53 -06:00
|
|
|
page = init_inode_metadata(inode, dir, name, ipage);
|
2014-09-24 04:17:53 -06:00
|
|
|
if (IS_ERR(page)) {
|
|
|
|
err = PTR_ERR(page);
|
|
|
|
goto fail;
|
|
|
|
}
|
2014-10-13 20:42:53 -06:00
|
|
|
|
|
|
|
f2fs_wait_on_page_writeback(ipage, NODE);
|
2014-09-24 04:17:53 -06:00
|
|
|
de = &dentry_blk->dentry[bit_pos];
|
|
|
|
de->hash_code = name_hash;
|
|
|
|
de->name_len = cpu_to_le16(namelen);
|
|
|
|
memcpy(dentry_blk->filename[bit_pos], name->name, name->len);
|
|
|
|
de->ino = cpu_to_le32(inode->i_ino);
|
|
|
|
set_de_type(de, inode);
|
|
|
|
for (i = 0; i < slots; i++)
|
|
|
|
test_and_set_bit_le(bit_pos + i, &dentry_blk->dentry_bitmap);
|
|
|
|
set_page_dirty(ipage);
|
|
|
|
|
|
|
|
/* we don't need to mark_inode_dirty now */
|
|
|
|
F2FS_I(inode)->i_pino = dir->i_ino;
|
|
|
|
update_inode(inode, page);
|
|
|
|
f2fs_put_page(page, 1);
|
|
|
|
|
|
|
|
update_parent_metadata(dir, inode, 0);
|
|
|
|
fail:
|
|
|
|
up_write(&F2FS_I(inode)->i_sem);
|
|
|
|
|
|
|
|
if (is_inode_flag_set(F2FS_I(dir), FI_UPDATE_DIR)) {
|
|
|
|
update_inode(dir, ipage);
|
|
|
|
clear_inode_flag(F2FS_I(dir), FI_UPDATE_DIR);
|
|
|
|
}
|
|
|
|
out:
|
|
|
|
f2fs_put_page(ipage, 1);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
|
|
|
|
struct inode *dir, struct inode *inode)
|
|
|
|
{
|
|
|
|
struct f2fs_inline_dentry *inline_dentry;
|
|
|
|
int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
|
|
|
|
unsigned int bit_pos;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
lock_page(page);
|
2014-10-13 20:34:26 -06:00
|
|
|
f2fs_wait_on_page_writeback(page, NODE);
|
2014-09-24 04:17:53 -06:00
|
|
|
|
|
|
|
inline_dentry = inline_data_addr(page);
|
|
|
|
bit_pos = dentry - inline_dentry->dentry;
|
|
|
|
for (i = 0; i < slots; i++)
|
|
|
|
test_and_clear_bit_le(bit_pos + i,
|
|
|
|
&inline_dentry->dentry_bitmap);
|
|
|
|
|
|
|
|
set_page_dirty(page);
|
|
|
|
|
|
|
|
dir->i_ctime = dir->i_mtime = CURRENT_TIME;
|
|
|
|
|
|
|
|
if (inode)
|
|
|
|
f2fs_drop_nlink(dir, inode, page);
|
|
|
|
|
|
|
|
f2fs_put_page(page, 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
bool f2fs_empty_inline_dir(struct inode *dir)
|
|
|
|
{
|
|
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
|
|
|
|
struct page *ipage;
|
|
|
|
unsigned int bit_pos = 2;
|
|
|
|
struct f2fs_inline_dentry *dentry_blk;
|
|
|
|
|
|
|
|
ipage = get_node_page(sbi, dir->i_ino);
|
|
|
|
if (IS_ERR(ipage))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
dentry_blk = inline_data_addr(ipage);
|
|
|
|
bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap,
|
|
|
|
NR_INLINE_DENTRY,
|
|
|
|
bit_pos);
|
|
|
|
|
|
|
|
f2fs_put_page(ipage, 1);
|
|
|
|
|
|
|
|
if (bit_pos < NR_INLINE_DENTRY)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx)
|
|
|
|
{
|
|
|
|
struct inode *inode = file_inode(file);
|
|
|
|
struct f2fs_inline_dentry *inline_dentry = NULL;
|
|
|
|
struct page *ipage = NULL;
|
2014-10-18 23:52:52 -06:00
|
|
|
struct f2fs_dentry_ptr d;
|
2014-09-24 04:17:53 -06:00
|
|
|
|
|
|
|
if (ctx->pos == NR_INLINE_DENTRY)
|
|
|
|
return 0;
|
|
|
|
|
2014-10-15 22:29:51 -06:00
|
|
|
ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino);
|
2014-09-24 04:17:53 -06:00
|
|
|
if (IS_ERR(ipage))
|
|
|
|
return PTR_ERR(ipage);
|
|
|
|
|
|
|
|
inline_dentry = inline_data_addr(ipage);
|
|
|
|
|
2014-10-18 23:52:52 -06:00
|
|
|
make_dentry_ptr(&d, (void *)inline_dentry, 2);
|
|
|
|
|
|
|
|
if (!f2fs_fill_dentries(ctx, &d, 0))
|
2014-10-15 22:29:51 -06:00
|
|
|
ctx->pos = NR_INLINE_DENTRY;
|
2014-09-24 04:17:53 -06:00
|
|
|
|
2014-10-15 22:29:51 -06:00
|
|
|
f2fs_put_page(ipage, 1);
|
2014-09-24 04:17:53 -06:00
|
|
|
return 0;
|
|
|
|
}
|