Dave Chinner fd45e47841 xfs: Ensure we force all busy extents in range to disk ... When we search for and find a busy extent during allocation we force the log out to ensure the extent free transaction is on disk before the allocation transaction. The current implementation has a subtle bug in it--it does not handle multiple overlapping ranges. That is, if we free lots of little extents into a single contiguous extent, then allocate the contiguous extent, the busy search code stops searching at the first extent it finds that overlaps the allocated range. It then uses the commit LSN of the transaction to force the log out to. Unfortunately, the other busy ranges might have more recent commit LSNs than the first busy extent that is found, and this results in xfs_alloc_search_busy() returning before all the extent free transactions are on disk for the range being allocated. This can lead to potential metadata corruption or stale data exposure after a crash because log replay won't replay all the extent free transactions that cover the allocation range. Modified-by: Alex Elder <aelder@sgi.com> (Dropped the "found" argument from the xfs_alloc_busysearch trace event.) Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>		2010-01-10 12:22:02 -06:00
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linux-2.6	xfs: Ensure we force all busy extents in range to disk	2010-01-10 12:22:02 -06:00
quota
support
Kconfig
Makefile
xfs_acl.h
xfs_ag.h
xfs_alloc_btree.c
xfs_alloc_btree.h
xfs_alloc.c	xfs: Ensure we force all busy extents in range to disk	2010-01-10 12:22:02 -06:00
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_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_dmapi.h
xfs_dmops.c
xfs_error.c
xfs_error.h
xfs_extfree_item.c
xfs_extfree_item.h
xfs_filestream.c
xfs_filestream.h
xfs_fs.h
xfs_fsops.c
xfs_fsops.h
xfs_ialloc_btree.c
xfs_ialloc_btree.h
xfs_ialloc.c
xfs_ialloc.h
xfs_iget.c	kill I_LOCK	2009-12-17 11:03:25 -05:00
xfs_inode_item.c
xfs_inode_item.h
xfs_inode.c	xfs: Don't flush stale inodes	2010-01-10 12:22:00 -06:00
xfs_inode.h
xfs_inum.h
xfs_iomap.c
xfs_iomap.h
xfs_itable.c
xfs_itable.h
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_item.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: fix timestamp handling in xfs_setattr	2010-01-10 12:21:58 -06:00
xfs_vnodeops.h
xfs.h