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89e4cb550a
linux/fs/xfs
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Dave Chinner 89e4cb550a xfs: convert ENOSPC inode flushing to use new syncd workqueue 
On of the problems with the current inode flush at ENOSPC is that we
queue a flush per ENOSPC event, regardless of how many are already
queued. Thi can result in    hundreds of queued flushes, most of
which simply burn CPU scanned and do no real work. This simply slows
down allocation at ENOSPC.

We really only need one active flush at a time, and we can easily
implement that via the new xfs_syncd_wq. All we need to do is queue
a flush if one is not already active, then block waiting for the
currently active flush to complete. The result is that we only ever
have a single ENOSPC inode flush active at a time and this greatly
reduces the overhead of ENOSPC processing.

On my 2p test machine, this results in tests exercising ENOSPC
conditions running significantly faster - 042 halves execution time,
083 drops from 60s to 5s, etc - while not introducing test
regressions.

This allows us to remove the old xfssyncd threads and infrastructure
as they are no longer used.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
2011-04-08 12:45:07 +10:00
..
linux-2.6 xfs: convert ENOSPC inode flushing to use new syncd workqueue 2011-04-08 12:45:07 +10:00
quota xfs: Convert remaining cmn_err() callers to new API 2011-03-07 10:08:35 +11:00
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 Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs 2011-03-21 14:24:56 -07:00
xfs_acl.h fs: provide rcu-walk aware permission i_ops 2011-01-07 17:50:29 +11:00
xfs_ag.h xfs: convert pag_ici_lock to a spin lock 2010-12-16 17:08:41 +11:00
xfs_alloc_btree.c xfs: remove the ->kill_root btree operation 2010-10-18 15:07:38 -05:00
xfs_alloc_btree.h
xfs_alloc.c xfs: factor agf counter updates into a helper 2011-03-09 08:23:47 -06:00
xfs_alloc.h xfs: limit extent length for allocation to AG size 2011-01-28 09:05:35 -06:00
xfs_arch.h
xfs_attr_leaf.c xfs: use KM_NOFS for allocations during attribute list operations 2010-12-23 11:57:37 +11:00
xfs_attr_leaf.h
xfs_attr_sf.h
xfs_attr.c xfs: remove xfs_buf wrappers 2010-10-18 15:08:07 -05:00
xfs_attr.h
xfs_bit.c
xfs_bit.h
xfs_bmap_btree.c xfs: remove unneeded #include statements 2010-07-26 13:16:33 -05:00
xfs_bmap_btree.h
xfs_bmap.c xfs: Convert remaining cmn_err() callers to new API 2011-03-07 10:08:35 +11:00
xfs_bmap.h xfs: fix failed write truncation handling. 2010-12-01 07:40:19 -06:00
xfs_btree_trace.c
xfs_btree_trace.h
xfs_btree.c xfs: connect up buffer reclaim priority hooks 2010-12-02 16:31:13 +11:00
xfs_btree.h xfs: remove the ->kill_root btree operation 2010-10-18 15:07:38 -05:00
xfs_buf_item.c xfs: Convert remaining cmn_err() callers to new API 2011-03-07 10:08:35 +11:00
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: Convert remaining cmn_err() callers to new API 2011-03-07 10:08:35 +11:00
xfs_da_btree.h
xfs_dfrag.c xfs: convert xfs_fs_cmn_err to new error logging API 2011-03-07 10:05:35 +11:00
xfs_dfrag.h
xfs_dinode.h xfs: Extend project quotas to support 32bit project ids 2010-10-18 15:08:08 -05:00
xfs_dir2_block.c xfs: fix gcc 4.6 set but not read and unused statement warnings 2010-07-26 13:16:51 -05:00
xfs_dir2_block.h
xfs_dir2_data.c xfs: remove unneeded #include statements 2010-07-26 13:16:33 -05:00
xfs_dir2_data.h
xfs_dir2_leaf.c xfs: remove xfs_buf wrappers 2010-10-18 15:08:07 -05:00
xfs_dir2_leaf.h
xfs_dir2_node.c xfs: Convert remaining cmn_err() callers to new API 2011-03-07 10:08:35 +11:00
xfs_dir2_node.h
xfs_dir2_sf.c xfs: remove unneeded #include statements 2010-07-26 13:16:33 -05:00
xfs_dir2_sf.h
xfs_dir2.c xfs: convert xfs_fs_cmn_err to new error logging API 2011-03-07 10:05:35 +11:00
xfs_dir2.h
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: Extend project quotas to support 32bit project ids 2010-10-18 15:08:08 -05:00
xfs_fsops.c xfs: convert xfs_fs_cmn_err to new error logging API 2011-03-07 10:05:35 +11:00
xfs_fsops.h xfs: ensure log covering transactions are synchronous 2011-01-11 20:28:17 -06:00
xfs_ialloc_btree.c xfs: remove the ->kill_root btree operation 2010-10-18 15:07:38 -05:00
xfs_ialloc_btree.h
xfs_ialloc.c xfs: Convert remaining cmn_err() callers to new API 2011-03-07 10:08:35 +11:00
xfs_ialloc.h
xfs_iget.c Merge branch 'master' into for-linus-merged 2011-01-10 21:35:55 -06:00
xfs_inode_item.c xfs: fix extent format buffer allocation size 2011-04-08 12:45:07 +10:00
xfs_inode_item.h xfs: simplify inode to transaction joining 2010-07-26 13:16:36 -05:00
xfs_inode.c xfs: introduce inode cluster buffer trylocks for xfs_iflush 2011-03-26 09:13:55 +11:00
xfs_inode.h xfs: add lockdep annotations for the rt inodes 2011-02-07 13:29:18 -06:00
xfs_inum.h
xfs_iomap.c xfs: rename xfs_cmn_err_fsblock_zero() 2011-03-07 10:06:35 +11:00
xfs_iomap.h xfs: kill xfs_iomap 2010-12-16 16:05:51 -06:00
xfs_itable.c xfs: Extend project quotas to support 32bit project ids 2010-10-18 15:08:08 -05:00
xfs_itable.h xfs: remove block number from inode lookup code 2010-06-24 11:35:17 +10:00
xfs_log_cil.c xfs: handle CIl transaction commit failures correctly 2011-01-28 09:05:36 -06:00
xfs_log_priv.h xfs: Convert xlog_warn to new logging interface 2011-03-07 10:01:35 +11:00
xfs_log_recover.c xfs: Convert xlog_warn to new logging interface 2011-03-07 10:01:35 +11:00
xfs_log_recover.h xfs: Clean up XFS_BLI_* flag namespace 2010-05-24 10:33:39 -05:00
xfs_log.c xfs: Convert xlog_warn to new logging interface 2011-03-07 10:01:35 +11:00
xfs_log.h xfs: handle CIl transaction commit failures correctly 2011-01-28 09:05:36 -06:00
xfs_mount.c xfs: Convert remaining cmn_err() callers to new API 2011-03-07 10:08:35 +11:00
xfs_mount.h xfs: convert ENOSPC inode flushing to use new syncd workqueue 2011-04-08 12:45:07 +10:00
xfs_mru_cache.c xfs: convert to alloc_workqueue() 2011-02-01 11:42:43 +01:00
xfs_mru_cache.h
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_sb.h xfs: Extend project quotas to support 32bit project ids 2010-10-18 15:08:08 -05:00
xfs_trans_ail.c xfs: convert xfs_cmn_err to xfs_alert_tag 2011-03-07 10:02:35 +11:00
xfs_trans_buf.c xfs: xfs_trans_read_buf() should return an error on failure 2011-03-26 09:14:44 +11:00
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: more sensible inode refcounting for ialloc 2011-02-22 20:32:28 -06:00
xfs_trans_priv.h xfs: use AIL bulk delete function to implement single delete 2010-12-20 12:36:15 +11:00
xfs_trans_space.h
xfs_trans.c xfs: handle CIl transaction commit failures correctly 2011-01-28 09:05:36 -06:00
xfs_trans.h xfs: more sensible inode refcounting for ialloc 2011-02-22 20:32:28 -06:00
xfs_types.h xfs: Extend project quotas to support 32bit project ids 2010-10-18 15:08:08 -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: preallocation transactions do not need to be synchronous 2011-03-26 09:13:08 +11:00
xfs_vnodeops.h xfs: preallocation transactions do not need to be synchronous 2011-03-26 09:13:08 +11:00
xfs.h