kernel-ark/fs/xfs/linux-2.6
Nathan Scott f07c225036 [XFS] Improve xfsbufd delayed write submission patterns, after blktrace
analysis.

Under a sequential create+allocate workload, blktrace reported backward
writes being issued by xfsbufd, and frequent inappropriate queue unplugs.
We now insert at the tail when moving from the delwri lists to the temp
lists, which maintains correct ordering, and we avoid unplugging queues
deep in the submit paths when we'd shortly do it at a higher level anyway.
blktrace now reports much healthier write patterns from xfsbufd for this
workload (and likely many others).

SGI-PV: 954310
SGI-Modid: xfs-linux-melb:xfs-kern:26396a

Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28 10:52:15 +10:00
..
kmem.c
kmem.h [PATCH] Really ignore kmem_cache_destroy return value 2006-09-27 08:26:10 -07:00
mrlock.h [XFS] lock validator: lockdep: small xfs init_rwsem() cleanup 2006-06-09 14:57:01 +10:00
mutex.h [XFS] mutex fallout - fix debug builds and remove no-longer-useful comment. 2006-01-16 16:21:34 +11:00
sema.h [XFS] Kill direct access to ->count in valusema(); all we ever use it for 2006-06-19 08:41:30 +10:00
spin.h
sv.h
time.h
xfs_aops.c [XFS] Fix ABBA deadlock between i_mutex and iolock. Avoid calling 2006-09-07 14:27:05 +10:00
xfs_aops.h [PATCH] mark address_space_operations const 2006-06-28 14:59:04 -07:00
xfs_buf.c [XFS] Improve xfsbufd delayed write submission patterns, after blktrace 2006-09-28 10:52:15 +10:00
xfs_buf.h [XFS] Fix remount vs no/barrier options by ensuring we clear unwanted 2006-07-28 17:04:44 +10:00
xfs_cred.h [PATCH] move capable() to capability.h 2006-01-11 18:42:13 -08:00
xfs_export.c [XFS] Remove version 1 directory code. Never functioned on Linux, just 2006-06-20 13:04:51 +10:00
xfs_export.h [XFS] We really suck at spulling. Thanks to Chris Pascoe for fixing all 2006-03-29 08:55:14 +10:00
xfs_file.c [PATCH] fs: Removing useless casts 2006-09-27 08:26:10 -07:00
xfs_fs_subr.c [XFS] Resolve a namespace collision on vnode/vnodeops for FreeBSD porters. 2006-06-09 17:00:52 +10:00
xfs_fs_subr.h
xfs_globals.c [XFS] Add degframentation exclusion support 2006-06-09 14:54:19 +10:00
xfs_globals.h
xfs_ioctl32.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
xfs_ioctl32.h [XFS] Fix compiler warning from xfs_file_compat_invis_ioctl prototype. 2006-03-20 13:25:48 +11:00
xfs_ioctl.c [XFS] pass inode to xfs_ioc_space(), simplify some code. There is trivial 2006-09-28 10:52:04 +10:00
xfs_iops.c [PATCH] fs: Removing useless casts 2006-09-27 08:26:10 -07:00
xfs_iops.h [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
xfs_linux.h [PATCH] FDPIC: Move roundup() into linux/kernel.h 2006-07-10 13:24:22 -07:00
xfs_lrw.c [XFS] Fix xfs_splice_write() so appended data gets to disk. 2006-09-07 14:27:15 +10:00
xfs_lrw.h [XFS] Resolve a namespace collision on vnode/vnodeops for FreeBSD porters. 2006-06-09 17:00:52 +10:00
xfs_stats.c [PATCH] for_each_possible_cpu: xfs 2006-06-23 07:42:45 -07:00
xfs_stats.h
xfs_super.c [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
xfs_super.h [XFS] Resolve a namespace collision on vnode/vnodeops for FreeBSD porters. 2006-06-09 17:00:52 +10:00
xfs_sysctl.c [PATCH] for_each_possible_cpu: xfs 2006-06-23 07:42:45 -07:00
xfs_sysctl.h [XFS] Add degframentation exclusion support 2006-06-09 14:54:19 +10:00
xfs_version.h
xfs_vfs.c [XFS] Remove version 1 directory code. Never functioned on Linux, just 2006-06-20 13:04:51 +10:00
xfs_vfs.h [XFS] Cleanup a missed porting conversion, and freezing. 2006-06-09 17:11:55 +10:00
xfs_vnode.c [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
xfs_vnode.h [XFS] * There is trivial "inode => vnode => inode" conversion, but only 2006-06-27 14:10:29 +10:00