Dave Chinner b223221956 xfs: ensure reclaim cursor is reset correctly at end of AG ... On a 32 bit highmem PowerPC machine, the XFS inode cache was growing without bound and exhausting low memory causing the OOM killer to be triggered. After some effort, the problem was reproduced on a 32 bit x86 highmem machine. The problem is that the per-ag inode reclaim index cursor was not getting reset to the start of the AG if the radix tree tag lookup found no more reclaimable inodes. Hence every further reclaim attempt started at the same index beyond where any reclaimable inodes lay, and no further background reclaim ever occurred from the AG. Without background inode reclaim the VM driven cache shrinker simply cannot keep up with cache growth, and OOM is the result. While the change that exposed the problem was the conversion of the inode reclaim to use work queues for background reclaim, it was not the cause of the bug. The bug was introduced when the cursor code was added, just waiting for some weird configuration to strike.... Signed-off-by: Dave Chinner <dchinner@redhat.com> Tested-By: Christian Kujau <lists@nerdbynature.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Alex Elder <aelder@sgi.com>		2011-05-09 12:17:03 -05:00
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linux-2.6	xfs: ensure reclaim cursor is reset correctly at end of AG	2011-05-09 12:17:03 -05:00
quota	Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs	2011-04-11 15:48:57 -07:00
support	xfs: kill support/debug.[ch]	2011-03-07 10:09:35 +11:00
Kconfig
Makefile	Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs	2011-03-21 14:24:56 -07:00
xfs.h
xfs_acl.h	fs: provide rcu-walk aware permission i_ops	2011-01-07 17:50:29 +11:00
xfs_ag.h	xfs: exact busy extent tracking	2011-04-28 13:18:04 -05:00
xfs_alloc.c	xfs: reduce the number of pagb_lock roundtrips in xfs_alloc_clear_busy	2011-04-28 13:18:09 -05:00
xfs_alloc.h	xfs: reduce the number of pagb_lock roundtrips in xfs_alloc_clear_busy	2011-04-28 13:18:09 -05:00
xfs_alloc_btree.c	xfs: exact busy extent tracking	2011-04-28 13:18:04 -05:00
xfs_alloc_btree.h
xfs_arch.h
xfs_attr.c
xfs_attr.h
xfs_attr_leaf.c
xfs_attr_leaf.h
xfs_attr_sf.h
xfs_bit.c
xfs_bit.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_bmap_btree.c
xfs_bmap_btree.h
xfs_btree.c
xfs_btree.h
xfs_btree_trace.c
xfs_btree_trace.h
xfs_buf_item.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
xfs_buf_item.h
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: cleanup duplicate initializations	2011-04-28 13:25:29 -05:00
xfs_dfrag.h
xfs_dinode.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_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: 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_dir2_sf.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_filestream.c
xfs_filestream.h
xfs_fs.h
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.c	xfs: Convert remaining cmn_err() callers to new API	2011-03-07 10:08:35 +11:00
xfs_ialloc.h
xfs_ialloc_btree.c
xfs_ialloc_btree.h
xfs_iget.c	Merge branch 'master' into for-linus-merged	2011-01-10 21:35:55 -06:00
xfs_inode.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
xfs_inode.h	Fix common misspellings	2011-03-31 11:26:23 -03:00
xfs_inode_item.c	xfs: cleanup duplicate initializations	2011-04-28 13:25:29 -05:00
xfs_inode_item.h
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_itable.c	xfs: fix variable set but not used warnings	2011-04-08 08:09:12 -05:00
xfs_itable.h
xfs_log.c	xfs: exact busy extent tracking	2011-04-28 13:18:04 -05:00
xfs_log.h	xfs: exact busy extent tracking	2011-04-28 13:18:04 -05:00
xfs_log_cil.c	xfs: reduce the number of pagb_lock roundtrips in xfs_alloc_clear_busy	2011-04-28 13:18:09 -05:00
xfs_log_priv.h	xfs: exact busy extent tracking	2011-04-28 13:18:04 -05:00
xfs_log_recover.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
xfs_log_recover.h
xfs_mount.c	xfs: cleanup duplicate initializations	2011-04-28 13:25:29 -05:00
xfs_mount.h	xfs: introduce background inode reclaim work	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_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_trans.c	xfs: reduce the number of pagb_lock roundtrips in xfs_alloc_clear_busy	2011-04-28 13:18:09 -05:00
xfs_trans.h	xfs: more sensible inode refcounting for ialloc	2011-02-22 20:32:28 -06:00
xfs_trans_ail.c	xfs: push the AIL from memory reclaim and periodic sync	2011-04-08 12:45:07 +10:00
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_trans_inode.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
xfs_trans_priv.h	xfs: push the AIL from memory reclaim and periodic sync	2011-04-08 12:45:07 +10:00
xfs_trans_space.h
xfs_types.h	xfs: exact busy extent tracking	2011-04-28 13:18:04 -05:00
xfs_utils.c
xfs_utils.h
xfs_vnodeops.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
xfs_vnodeops.h	xfs: preallocation transactions do not need to be synchronous	2011-03-26 09:13:08 +11:00