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linux/fs/xfs
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Dave Chinner 1d8c95a363 xfs: use a cursor for bulk AIL insertion 
Delayed logging can insert tens of thousands of log items into the
AIL at the same LSN. When the committing of log commit records
occur, we can get insertions occurring at an LSN that is not at the
end of the AIL. If there are thousands of items in the AIL on the
tail LSN, each insertion has to walk the AIL to find the correct
place to insert the new item into the AIL. This can consume large
amounts of CPU time and block other operations from occurring while
the traversals are in progress.

To avoid this repeated walk, use a AIL cursor to record
where we should be inserting the new items into the AIL without
having to repeat the walk. The cursor infrastructure already
provides this functionality for push walks, so is a simple extension
of existing code. While this will not avoid the initial walk, it
will avoid repeating it tens of thousands of times during a single
checkpoint commit.

This version includes logic improvements from Christoph Hellwig.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
2011-07-20 18:37:20 -05:00
..
linux-2.6 xfs: failure mapping nfs fh to inode should return ESTALE 2011-07-20 18:35:21 -05:00
quota xfs: remove the dead QUOTADEBUG code 2011-07-13 13:43:50 +02:00
support xfs: kill support/debug.[ch] 2011-03-07 10:09:35 +11:00
Kconfig quota: Make QUOTACTL config be selected by its users 2010-10-05 12:16:37 +02:00
Makefile xfs: remove leftovers of the old btree tracing code 2011-07-13 13:43:50 +02:00
xfs.h xfs: remove the dead QUOTADEBUG code 2011-07-13 13:43:50 +02:00
xfs_acl.h fs: provide rcu-walk aware permission i_ops 2011-01-07 17:50:29 +11:00
xfs_ag.h xfs: do not discard alloc btree blocks 2011-05-24 11:17:22 -05:00
xfs_alloc.c xfs: remove variables that serve no purpose in xfs_alloc_ag_vextent_exact() 2011-07-08 11:32:51 -05:00
xfs_alloc.h xfs: do not discard alloc btree blocks 2011-05-24 11:17:22 -05:00
xfs_alloc_btree.c xfs: remove leftovers of the old btree tracing code 2011-07-13 13:43:50 +02:00
xfs_alloc_btree.h [XFS] Always use struct xfs_btree_block instead of short / longform 2008-10-30 17:14:34 +11:00
xfs_attr.c xfs: byteswap constants instead of variables 2011-07-08 14:36:05 +02:00
xfs_attr.h xfs: convert attr to use unsigned names 2010-01-20 10:47:48 +11:00
xfs_attr_leaf.c xfs: byteswap constants instead of variables 2011-07-08 14:36:05 +02:00
xfs_attr_leaf.h [XFS] Remove macro-to-function indirections in attr code 2009-01-09 15:46:44 +11:00
xfs_attr_sf.h xfs: convert attr to use unsigned names 2010-01-20 10:47:48 +11:00
xfs_bit.c
xfs_bit.h [XFS] Remove macro-to-function indirections in the mask code 2009-01-09 15:53:54 +11:00
xfs_bmap.c xfs: reshuffle dir2 headers 2011-07-13 13:43:48 +02:00
xfs_bmap.h xfs: remove the unused XFS_BMAPI_RSVBLOCKS flag 2011-05-25 10:48:36 -05:00
xfs_bmap_btree.c xfs: remove leftovers of the old btree tracing code 2011-07-13 13:43:50 +02:00
xfs_bmap_btree.h xfs: make several more functions static 2010-01-15 15:31:38 -06:00
xfs_btree.c xfs: remove leftovers of the old btree tracing code 2011-07-13 13:43:50 +02:00
xfs_btree.h xfs: remove leftovers of the old btree tracing code 2011-07-13 13:43:50 +02:00
xfs_buf_item.c xfs: remove wrappers around b_iodone 2011-07-13 13:43:49 +02:00
xfs_buf_item.h xfs: use struct list_head for the buf cancel table 2010-12-16 16:05:22 -06:00
xfs_da_btree.c xfs: remove the dead XFS_DABUF_DEBUG code 2011-07-13 13:43:50 +02:00
xfs_da_btree.h xfs: remove the dead XFS_DABUF_DEBUG code 2011-07-13 13:43:50 +02:00
xfs_dfrag.c xfs: cleanup duplicate initializations 2011-04-28 13:25:29 -05:00
xfs_dfrag.h xfs: clean up inconsistent variable naming in xfs_swap_extent 2010-01-15 15:31:23 -06:00
xfs_dinode.h xfs: Extend project quotas to support 32bit project ids 2010-10-18 15:08:08 -05:00
xfs_dir2.c xfs: factor out xfs_da_grow_inode_int 2011-07-13 13:43:49 +02:00
xfs_dir2.h xfs: reshuffle dir2 headers 2011-07-13 13:43:48 +02:00
xfs_dir2_block.c xfs: reshuffle dir2 headers 2011-07-13 13:43:48 +02:00
xfs_dir2_data.c xfs: reshuffle dir2 headers 2011-07-13 13:43:48 +02:00
xfs_dir2_format.h xfs: cleanup struct xfs_dir2_free 2011-07-13 13:43:48 +02:00
xfs_dir2_leaf.c xfs: factor out xfs_dir2_leaf_find_stale 2011-07-13 13:43:48 +02:00
xfs_dir2_node.c xfs: cleanup struct xfs_dir2_free 2011-07-13 13:43:48 +02:00
xfs_dir2_priv.h xfs: reshuffle dir2 headers 2011-07-13 13:43:48 +02:00
xfs_dir2_sf.c xfs: reshuffle dir2 headers 2011-07-13 13:43:48 +02:00
xfs_error.c xfs: Convert remaining cmn_err() callers to new API 2011-03-07 10:08:35 +11:00
xfs_error.h xfs: kill support/debug.[ch] 2011-03-07 10:09:35 +11:00
xfs_extfree_item.c xfs: fix efi item leak on forced shutdown 2011-01-28 09:01:33 -06:00
xfs_extfree_item.h xfs: Pull EFI/EFD handling out from under the AIL lock 2010-12-20 11:59:49 +11:00
xfs_filestream.c xfs: tell lockdep about parent iolock usage in filestreams 2010-11-10 12:00:48 -06:00
xfs_filestream.h xfs: clean up filestreams helpers 2010-07-26 13:16:51 -05:00
xfs_fs.h xfs: consolidate & clarify mount sanity checks 2011-07-08 11:32:51 -05:00
xfs_fsops.c Revert "xfs: fix filesystsem freeze race in xfs_trans_alloc" 2011-07-11 10:21:03 -05:00
xfs_fsops.h xfs: ensure log covering transactions are synchronous 2011-01-11 20:28:17 -06:00
xfs_ialloc.c xfs: byteswap constants instead of variables 2011-07-08 14:36:05 +02:00
xfs_ialloc.h xfs: rationalize xfs_inobt_lookup* 2009-09-01 12:45:39 -05:00
xfs_ialloc_btree.c xfs: remove leftovers of the old btree tracing code 2011-07-13 13:43:50 +02:00
xfs_ialloc_btree.h xfs: remove superflous inobt macros 2009-02-09 08:37:14 +01:00
xfs_iget.c xfs: remove leftovers of the old btree tracing code 2011-07-13 13:43:50 +02:00
xfs_inode.c xfs: remove leftovers of the old btree tracing code 2011-07-13 13:43:50 +02:00
xfs_inode.h xfs: remove i_transp 2011-07-08 14:34:47 +02:00
xfs_inode_item.c xfs: remove wrappers around b_fspriv 2011-07-13 13:43:49 +02:00
xfs_inode_item.h xfs: simplify inode to transaction joining 2010-07-26 13:16:36 -05:00
xfs_inum.h xfs: cleanup shortform directory inode number handling 2011-07-08 14:35:03 +02:00
xfs_iomap.c Revert "xfs: fix filesystsem freeze race in xfs_trans_alloc" 2011-07-11 10:21:03 -05:00
xfs_iomap.h xfs: kill xfs_iomap 2010-12-16 16:05:51 -06:00
xfs_itable.c xfs: fix variable set but not used warnings 2011-04-08 08:09:12 -05:00
xfs_itable.h xfs: remove block number from inode lookup code 2010-06-24 11:35:17 +10:00
xfs_log.c xfs: remove wrappers around b_iodone 2011-07-13 13:43:49 +02:00
xfs_log.h xfs: exact busy extent tracking 2011-04-28 13:18:04 -05:00
xfs_log_cil.c xfs: add online discard support 2011-05-24 11:17:13 -05:00
xfs_log_priv.h xfs: exact busy extent tracking 2011-04-28 13:18:04 -05:00
xfs_log_recover.c xfs: remove wrappers around b_iodone 2011-07-13 13:43:49 +02:00
xfs_log_recover.h xfs: Clean up XFS_BLI_* flag namespace 2010-05-24 10:33:39 -05:00
xfs_mount.c xfs: Remove the second parameter to xfs_sb_count() 2011-07-20 18:35:03 -05:00
xfs_mount.h xfs: Remove the second parameter to xfs_sb_count() 2011-07-20 18:35:03 -05:00
xfs_mru_cache.c xfs: convert to alloc_workqueue() 2011-02-01 11:42:43 +01:00
xfs_mru_cache.h xfs: Kill filestreams cache flush 2010-01-15 15:34:22 -06:00
xfs_quota.h xfs: Convert xlog_warn to new logging interface 2011-03-07 10:01:35 +11:00
xfs_rename.c xfs: log timestamp changes to the source inode in rename 2010-12-09 17:07:02 -06:00
xfs_rtalloc.c xfs: Convert remaining cmn_err() callers to new API 2011-03-07 10:08:35 +11:00
xfs_rtalloc.h xfs: Convert remaining cmn_err() callers to new API 2011-03-07 10:08:35 +11:00
xfs_rw.c xfs: Convert remaining cmn_err() callers to new API 2011-03-07 10:08:35 +11:00
xfs_rw.h xfs: only clear the suid bit once in xfs_write 2010-02-12 13:43:57 -06:00
xfs_sb.h xfs: Extend project quotas to support 32bit project ids 2010-10-18 15:08:08 -05:00
xfs_trans.c xfs: use a cursor for bulk AIL insertion 2011-07-20 18:37:20 -05:00
xfs_trans.h Revert "xfs: fix filesystsem freeze race in xfs_trans_alloc" 2011-07-11 10:21:03 -05:00
xfs_trans_ail.c xfs: use a cursor for bulk AIL insertion 2011-07-20 18:37:20 -05:00
xfs_trans_buf.c xfs: remove wrappers around b_iodone 2011-07-13 13:43:49 +02:00
xfs_trans_extfree.c xfs: Pull EFI/EFD handling out from under the AIL lock 2010-12-20 11:59:49 +11:00
xfs_trans_inode.c xfs: remove i_transp 2011-07-08 14:34:47 +02:00
xfs_trans_priv.h xfs: use a cursor for bulk AIL insertion 2011-07-20 18:37:20 -05:00
xfs_trans_space.h xfs: remove superflous inobt macros 2009-02-09 08:37:14 +01:00
xfs_types.h xfs: exact busy extent tracking 2011-04-28 13:18:04 -05:00
xfs_utils.c xfs: remove xfs_cred.h 2010-10-18 15:08:06 -05:00
xfs_utils.h xfs: remove xfs_cred.h 2010-10-18 15:08:06 -05:00
xfs_vnodeops.c xfs: return the buffer locked from xfs_buf_get_uncached 2011-07-08 14:36:25 +02:00
xfs_vnodeops.h xfs: split xfs_setattr 2011-07-08 14:34:23 +02:00