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Dave Chinner 37992c18bb xfs: don't release bios on completion immediately 
Completion of an ioend requires us to walk the bufferhead list to
end writback on all the bufferheads. This, in turn, is needed so
that we can end writeback on all the pages we just did IO on.

To remove our dependency on bufferheads in writeback, we need to
turn this around the other way - we need to walk the pages we've
just completed IO on, and then walk the buffers attached to the
pages and complete their IO. In doing this, we remove the
requirement for the ioend to track bufferheads directly.

To enable IO completion to walk all the pages we've submitted IO on,
we need to keep the bios that we used for IO around until the ioend
has been completed. We can do this simply by chaining the bios to
the ioend at completion time, and then walking their pages directly
just before destroying the ioend.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
[hch: changed the xfs_finish_page_writeback calling convention]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
 		2016-04-06 08:12:28 +10:00
..
libxfs Merge branch 'xfs-misc-fixes-4.6-4' into for-next 2016-03-15 11:44:35 +11:00
Kconfig xfs: require 64-bit sector_t 2014-07-30 09:12:05 +10:00
Makefile nfsd: add SCSI layout support 2016-03-18 11:42:53 -04:00
kmem.c xfs: more info from kmem deadlocks and high-level error msgs 2015-10-12 16:04:45 +11:00
kmem.h kmemcg: account certain kmem allocations to memcg 2016-01-14 16:00:49 -08:00
mrlock.h
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uuid.c
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uuid.h
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xfs.h
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xfs_acl.c xfs: Change how listxattr generates synthetic attributes 2015-12-06 21:34:16 -05:00
xfs_acl.h xfs: Change how listxattr generates synthetic attributes 2015-12-06 21:34:16 -05:00
xfs_aops.c xfs: don't release bios on completion immediately 2016-04-06 08:12:28 +10:00
xfs_aops.h xfs: don't release bios on completion immediately 2016-04-06 08:12:28 +10:00
xfs_attr.h xfs: kill xfs_vnodeops.[ch] 2013-08-12 16:53:39 -05:00
xfs_attr_inactive.c Merge branch 'xfs-misc-fixes-for-4.2-3' into for-next 2015-06-23 08:49:01 +10:00
xfs_attr_list.c xfs: fix two memory leaks in xfs_attr_list.c error paths 2016-03-02 09:51:09 +11:00
xfs_bmap_util.c xfs: Changes for 4.6-rc1 2016-03-21 11:53:05 -07:00
xfs_bmap_util.h xfs: Add support FALLOC_FL_INSERT_RANGE for fallocate 2015-03-25 15:08:56 +11:00
xfs_buf.c xfs: remove XBF_DONE flag wrapper macros 2016-02-10 15:01:11 +11:00
xfs_buf.h xfs: remove XFS_BUF_ZEROFLAGS macro 2016-02-10 15:01:30 +11:00
xfs_buf_item.c xfs: remove XBF_STALE flag wrapper macros 2016-02-10 15:01:11 +11:00
xfs_buf_item.h xfs: fix non-debug build warnings 2015-08-25 10:05:13 +10:00
xfs_dir2_readdir.c xfs: mode di_mode to vfs inode 2016-02-09 16:54:58 +11:00
xfs_discard.c xfs: fix format specifier , should be %llx and not %llu 2016-03-02 09:57:04 +11:00
xfs_discard.h
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xfs_dquot.c xfs: Split default quota limits by quota type 2016-02-08 11:27:55 +11:00
xfs_dquot.h xfs: fix implicit bool to int conversion 2015-01-09 10:48:58 +11:00
xfs_dquot_item.c xfs: move most of xfs_sb.h to xfs_format.h 2014-11-28 14:27:09 +11:00
xfs_dquot_item.h xfs: remove the quotaoff log format from the quotaoff log item 2013-12-13 11:34:08 +11:00
xfs_error.c xfs: print name of verifier if it fails 2016-01-04 16:10:19 +11:00
xfs_error.h xfs: remove inst_t 2015-06-22 09:44:02 +10:00
xfs_export.c Various bugfixes, a RDMA update from Chuck Lever, and support for a new 2016-03-24 19:50:32 -07:00
xfs_export.h
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xfs_extent_busy.c xfs: merge xfs_ag.h into xfs_format.h 2014-11-28 14:25:04 +11:00
xfs_extent_busy.h xfs: decouple inode and bmap btree header files 2013-10-23 16:28:49 -05:00
xfs_extfree_item.c xfs: add helper to conditionally remove items from the AIL 2015-08-19 10:01:08 +10:00
xfs_extfree_item.h xfs: fix efi/efd error handling to avoid fs shutdown hangs 2015-08-19 09:51:16 +10:00
xfs_file.c Merge branch 'xfs-gut-icdinode-4.6' into for-next 2016-03-07 09:30:32 +11:00
xfs_filestream.c xfs: mode di_mode to vfs inode 2016-02-09 16:54:58 +11:00
xfs_filestream.h xfs: add filestream allocator tracepoints 2014-04-23 07:11:52 +10:00
xfs_fsops.c xfs: growfs not aware of sb_meta_uuid 2015-08-19 10:31:41 +10:00
xfs_fsops.h xfs: remove unused function definitions 2016-02-08 14:58:07 +11:00
xfs_globals.c xfs: export log_recovery_delay to delay mount time log recovery 2014-09-09 11:56:13 +10:00
xfs_icache.c xfs: mode di_mode to vfs inode 2016-02-09 16:54:58 +11:00
xfs_icache.h xfs: merge xfs_ag.h into xfs_format.h 2014-11-28 14:25:04 +11:00
xfs_icreate_item.c xfs: move most of xfs_sb.h to xfs_format.h 2014-11-28 14:27:09 +11:00
xfs_icreate_item.h xfs: separate icreate log format definitions from xfs_icreate_item.h 2013-08-12 16:10:35 -05:00
xfs_inode.c Merge branch 'xfs-buf-macro-cleanup-4.6' into for-next 2016-03-07 09:31:00 +11:00
xfs_inode.h Merge branch 'xfs-gut-icdinode-4.6' into for-next 2016-03-07 09:30:32 +11:00
xfs_inode_item.c xfs: mode di_mode to vfs inode 2016-02-09 16:54:58 +11:00
xfs_inode_item.h xfs: remove timestamps from incore inode 2016-02-09 16:54:58 +11:00
xfs_ioctl.c Merge branch 'xfs-dax-fixes-4.6' into for-next 2016-03-07 09:34:31 +11:00
xfs_ioctl.h xfs: consolidate extent swap code 2013-08-12 16:56:06 -05:00
xfs_ioctl32.c xfs: prefix XATTR_LIST_MAX with XFS_ 2015-10-12 16:02:56 +11:00
xfs_ioctl32.h xfs: compat_xfs_bstat does not have forkoff 2014-10-02 09:17:58 +10:00
xfs_iomap.c Merge branch 'xfs-misc-fixes-for-4.5-2' into for-next 2016-01-12 07:04:30 +11:00
xfs_iomap.h xfs: pass a 64-bit count argument to xfs_iomap_write_unwritten 2015-01-09 10:48:12 +11:00
xfs_iops.c Merge branch 'xfs-dax-fixes-4.6' into for-next 2016-03-07 09:34:31 +11:00
xfs_iops.h xfs: inodes are new until the dentry cache is set up 2015-02-23 22:38:08 +11:00
xfs_itable.c xfs: mode di_mode to vfs inode 2016-02-09 16:54:58 +11:00
xfs_itable.h xfs: bulkstat chunk formatting cursor is broken 2014-11-07 08:30:30 +11:00
xfs_linux.h xfs: pass xfsstats structures to handlers and macros 2015-10-12 05:19:45 +11:00
xfs_log.c xfs: use named array initializers for log item dumping 2016-03-07 08:40:03 +11:00
xfs_log.h xfs: validate metadata LSNs against log on v5 superblocks 2015-10-12 15:59:25 +11:00
xfs_log_cil.c xfs: close xc_cil list_empty() races with cil commit sequence 2015-07-29 11:51:01 +10:00
xfs_log_priv.h xfs: debug mode log record crc error injection 2016-01-05 07:41:16 +11:00
xfs_log_recover.c xfs: fixes for 4.5-rc7 2016-03-11 10:21:32 -08:00
xfs_message.c xfs: more info from kmem deadlocks and high-level error msgs 2015-10-12 16:04:45 +11:00
xfs_message.h
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xfs_mount.c Merge branch 'xfs-misc-fixes-4.6-2' into for-next 2016-03-07 09:34:54 +11:00
xfs_mount.h Merge branch 'xfs-misc-fixes-4.6-4' into for-next 2016-03-15 11:44:35 +11:00
xfs_mru_cache.c xfs: xfs_mru_cache_insert() should use GFP_NOFS 2015-03-25 14:57:53 +11:00
xfs_mru_cache.h xfs: embedd mru_elem into parent structure 2014-04-23 07:11:51 +10:00
xfs_ondisk.h xfs: check sizes of XFS on-disk structures at compile time 2016-03-09 08:15:14 +11:00
xfs_pnfs.c wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
xfs_pnfs.h nfsd: add SCSI layout support 2016-03-18 11:42:53 -04:00
xfs_qm.c xfs: Split default quota limits by quota type 2016-02-08 11:27:55 +11:00
xfs_qm.h xfs: Split default quota limits by quota type 2016-02-08 11:27:55 +11:00
xfs_qm_bhv.c xfs: move most of xfs_sb.h to xfs_format.h 2014-11-28 14:27:09 +11:00
xfs_qm_syscalls.c xfs: Split default quota limits by quota type 2016-02-08 11:27:55 +11:00
xfs_quota.h xfs: fix quota block reservation leak when tp allocates and frees blocks 2015-06-01 07:15:37 +10:00
xfs_quotaops.c xfs: wire up Q_XGETNEXTQUOTA / get_nextdqblk 2016-02-08 11:27:38 +11:00
xfs_rtalloc.c xfs: remove timestamps from incore inode 2016-02-09 16:54:58 +11:00
xfs_rtalloc.h xfs: combine xfs_rtmodify_summary and xfs_rtget_summary 2014-09-09 11:58:42 +10:00
xfs_stats.c xfs: stats are no longer dependent on CONFIG_PROC_FS 2015-10-19 08:42:46 +11:00
xfs_stats.h xfs: per-filesystem stats counter implementation 2015-10-12 18:21:22 +11:00
xfs_super.c Merge branch 'xfs-misc-fixes-4.6-3' into for-next 2016-03-09 08:18:30 +11:00
xfs_super.h xfs: fix up inode32/64 (re)mount handling 2016-03-02 09:58:09 +11:00
xfs_symlink.c xfs: eliminate committed arg from xfs_bmap_finish 2016-01-11 11:34:01 +11:00
xfs_symlink.h xfs: push down inactive transaction mgmt for remote symlinks 2013-10-08 14:53:02 -05:00
xfs_sysctl.c xfs: pass xfsstats structures to handlers and macros 2015-10-12 05:19:45 +11:00
xfs_sysctl.h xfs: export log_recovery_delay to delay mount time log recovery 2014-09-09 11:56:13 +10:00
xfs_sysfs.c xfs: debug mode forced buffered write failure 2016-03-15 11:42:44 +11:00
xfs_sysfs.h xfs: create global stats and stats_clear in sysfs 2015-10-12 05:15:45 +11:00
xfs_trace.c xfs: move most of xfs_sb.h to xfs_format.h 2014-11-28 14:27:09 +11:00
xfs_trace.h xfs: don't use ioends for direct write completions 2016-02-08 14:40:51 +11:00
xfs_trans.c xfs: ensure committed is initialized in xfs_trans_roll 2016-03-15 11:42:47 +11:00
xfs_trans.h xfs: remove xfs_trans_get_block_res 2016-03-02 09:58:21 +11:00
xfs_trans_ail.c xfs: Make xfsaild freezeable again 2016-02-08 14:59:07 +11:00
xfs_trans_buf.c xfs: remove XBF_STALE flag wrapper macros 2016-02-10 15:01:11 +11:00
xfs_trans_dquot.c xfs: Split default quota limits by quota type 2016-02-08 11:27:55 +11:00
xfs_trans_extfree.c xfs: ensure EFD trans aborts on log recovery extent free failure 2015-08-19 09:51:43 +10:00
xfs_trans_inode.c xfs: move di_changecount to VFS inode 2016-02-09 16:54:58 +11:00
xfs_trans_priv.h xfs: add helper to conditionally remove items from the AIL 2015-08-19 10:01:08 +10:00
xfs_xattr.c xfs: Change how listxattr generates synthetic attributes 2015-12-06 21:34:16 -05:00