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Dave Chinner 51749e47e1 xfs: log IO completion workqueue is a high priority queue ... The workqueue implementation in 2.6.36-rcX has changed, resulting in the workqueues no longer having dedicated threads for work processing. This has caused severe livelocks under heavy parallel create workloads because the log IO completions have been getting held up behind metadata IO completions. Hence log commits would stall, memory allocation would stall because pages could not be cleaned, and lock contention on the AIL during inode IO completion processing was being seen to slow everything down even further. By making the log Io completion workqueue a high priority workqueue, they are queued ahead of all data/metadata IO completions and processed before the data/metadata completions. Hence the log never gets stalled, and operations needed to clean memory can continue as quickly as possible. This avoids the livelock conditions and allos the system to keep running under heavy load as per normal. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>		15 years ago
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kmem.c	…
kmem.h	…
mrlock.h	…
sv.h	…
time.h	…
xfs_acl.c	xfs: split xfs_itrace_entry	15 years ago
xfs_aops.c	xfs: do not discard page cache data on EAGAIN	15 years ago
xfs_aops.h	direct-io: move aio_complete into ->end_io	15 years ago
xfs_buf.c	xfs: log IO completion workqueue is a high priority queue	15 years ago
xfs_buf.h	xfs: improve buffer cache hash scalability	15 years ago
xfs_cred.h	…
xfs_export.c	xfs: remove xfs_iput_new	15 years ago
xfs_export.h	…
xfs_file.c	xfs: remove a dmapi leftover	15 years ago
xfs_fs_subr.c	xfs: drop dmapi hooks	15 years ago
xfs_globals.c	…
xfs_globals.h	…
xfs_ioctl.c	xfs: prevent reading uninitialized stack memory	15 years ago
xfs_ioctl.h	…
xfs_ioctl32.c	xfs: split xfs_itrace_entry	15 years ago
xfs_ioctl32.h	…
xfs_iops.c	xfs: Make fiemap work with sparse files	15 years ago
xfs_iops.h	…
xfs_linux.h	xfs: new truncate sequence	15 years ago
xfs_quotaops.c	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6	15 years ago
xfs_stats.c	…
xfs_stats.h	…
xfs_super.c	xfs: dummy transactions should not dirty VFS state	15 years ago
xfs_super.h	xfs: drop dmapi hooks	15 years ago
xfs_sync.c	xfs: dummy transactions should not dirty VFS state	15 years ago
xfs_sync.h	xfs: remove explicit xfs_sync_data/xfs_sync_attr calls on umount	15 years ago
xfs_sysctl.c	…
xfs_sysctl.h	…
xfs_trace.c	xfs: remove unneeded #include statements	15 years ago
xfs_trace.h	convert remaining ->clear_inode() to ->evict_inode()	15 years ago
xfs_version.h	…
xfs_vnode.h	…
xfs_xattr.c	…