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>		2010-09-10 10:16:54 -05:00
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linux-2.6	xfs: log IO completion workqueue is a high priority queue	2010-09-10 10:16:54 -05:00
quota
support
Kconfig
Makefile
xfs_acl.h
xfs_ag.h
xfs_alloc_btree.c
xfs_alloc_btree.h
xfs_alloc.c
xfs_alloc.h
xfs_arch.h
xfs_attr_leaf.c
xfs_attr_leaf.h
xfs_attr_sf.h
xfs_attr.c
xfs_attr.h
xfs_bit.c
xfs_bit.h
xfs_bmap_btree.c
xfs_bmap_btree.h
xfs_bmap.c	xfs: Make fiemap work with sparse files	2010-09-03 09:02:11 -05:00
xfs_bmap.h
xfs_btree_trace.c
xfs_btree_trace.h
xfs_btree.c
xfs_btree.h
xfs_buf_item.c
xfs_buf_item.h
xfs_da_btree.c
xfs_da_btree.h
xfs_dfrag.c
xfs_dfrag.h
xfs_dinode.h
xfs_dir2_block.c
xfs_dir2_block.h
xfs_dir2_data.c
xfs_dir2_data.h
xfs_dir2_leaf.c
xfs_dir2_leaf.h
xfs_dir2_node.c
xfs_dir2_node.h
xfs_dir2_sf.c
xfs_dir2_sf.h
xfs_dir2.c
xfs_dir2.h
xfs_error.c
xfs_error.h
xfs_extfree_item.c
xfs_extfree_item.h
xfs_filestream.c
xfs_filestream.h
xfs_fs.h	xfs: Make fiemap work with sparse files	2010-09-03 09:02:11 -05:00
xfs_fsops.c	xfs: dummy transactions should not dirty VFS state	2010-08-24 11:46:31 +10:00
xfs_fsops.h	xfs: dummy transactions should not dirty VFS state	2010-08-24 11:46:31 +10:00
xfs_ialloc_btree.c
xfs_ialloc_btree.h
xfs_ialloc.c
xfs_ialloc.h
xfs_iget.c
xfs_inode_item.c
xfs_inode_item.h
xfs_inode.c	xfs: ensure we mark all inodes in a freed cluster XFS_ISTALE	2010-08-24 11:42:41 +10:00
xfs_inode.h
xfs_inum.h
xfs_iomap.c
xfs_iomap.h
xfs_itable.c
xfs_itable.h
xfs_log_cil.c	xfs: don't do memory allocation under the CIL context lock	2010-08-24 11:45:53 +10:00
xfs_log_priv.h
xfs_log_recover.c
xfs_log_recover.h
xfs_log.c
xfs_log.h
xfs_mount.c
xfs_mount.h
xfs_mru_cache.c
xfs_mru_cache.h
xfs_quota.h
xfs_refcache.h
xfs_rename.c
xfs_rtalloc.c
xfs_rtalloc.h
xfs_rw.c
xfs_rw.h
xfs_sb.h
xfs_trans_ail.c
xfs_trans_buf.c
xfs_trans_extfree.c
xfs_trans_inode.c
xfs_trans_priv.h
xfs_trans_space.h
xfs_trans.c
xfs_trans.h
xfs_types.h
xfs_utils.c
xfs_utils.h
xfs_vnodeops.c	xfs: prevent 32bit overflow in space reservation	2010-09-03 12:19:33 +10:00
xfs_vnodeops.h
xfs.h