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6785073ba1
linux/fs/xfs
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David Chinner 6785073ba1 [XFS] Use KM_NOFS for incore inode extent tree allocation V2 
If we allow incore extent tree allocations to recurse into the
filesystem under memory pressure, new delayed allocations through
xfs_iomap_write_delay() can deadlock on themselves if memory
reclaim tries to write back dirty pages from that inode.

It will deadlock in xfs_iomap_write_allocate() trying to take the
ilock we already hold. This can also show up as complex ABBA deadlocks
when multiple threads are triggering memory reclaim when trying to
allocate extents.

The main cause of this is the fact that delayed allocation is not done in
a transaction, so KM_NOFS is not automatically added to the allocations to
prevent this recursion.

Mark all allocations done for the incore inode extent tree as KM_NOFS to
ensure they never recurse back into the filesystem.

Version 2: o KM_NOFS implies KM_SLEEP, so just use KM_NOFS

SGI-PV: 981498

SGI-Modid: xfs-linux-melb:xfs-kern:31726a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Niv Sardi <xaiki@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-08-13 16:02:51 +10:00
..
linux-2.6 [XFS] XFS: Kill xfs_vtoi() 2008-08-13 16:01:45 +10:00
quota [XFS] Kill shouty XFS_ITOV() macro 2008-08-13 16:00:45 +10:00
support [XFS] streamline init/exit path 2008-07-28 16:59:25 +10:00
Kconfig [XFS] allow enabling CONFIG_XFS_DEBUG 2008-04-29 16:07:48 +10:00
Makefile [XFS] Use the generic xattr methods. 2008-07-28 16:58:49 +10:00
xfs_acl.c [XFS] XFS: Kill xfs_vtoi() 2008-08-13 16:01:45 +10:00
xfs_acl.h [XFS] Fix up problem when CONFIG_XFS_POSIX_ACL is not set and yet we still 2008-07-28 16:59:17 +10:00
xfs_ag.h [XFS] Unwrap pagb_lock. 2008-02-07 16:46:39 +11:00
xfs_alloc_btree.c xfs: convert beX_add to beX_add_cpu (new common API) 2008-02-13 16:21:19 -08:00
xfs_alloc_btree.h
xfs_alloc.c [XFS] fix logic error in xfs_alloc_ag_vextent_near() 2008-04-18 12:03:02 +10:00
xfs_alloc.h
xfs_arch.h xfs: convert beX_add to beX_add_cpu (new common API) 2008-02-13 16:21:19 -08:00
xfs_attr_leaf.c [XFS] Switches xfs_vn_listxattr to set it's put_listent callback directly 2008-07-28 16:58:53 +10:00
xfs_attr_leaf.h [XFS] Switches xfs_vn_listxattr to set it's put_listent callback directly 2008-07-28 16:58:53 +10:00
xfs_attr_sf.h [XFS] 2008-07-28 16:58:35 +10:00
xfs_attr.c [XFS] Switches xfs_vn_listxattr to set it's put_listent callback directly 2008-07-28 16:58:53 +10:00
xfs_attr.h [XFS] attrmulti cleanup 2008-07-28 16:59:09 +10:00
xfs_bit.c [XFS] Use the generic bitops rather than implementing them ourselves. 2008-08-13 15:41:12 +10:00
xfs_bit.h [XFS] Use the generic bitops rather than implementing them ourselves. 2008-08-13 15:41:12 +10:00
xfs_bmap_btree.c [XFS] Allow xfs_bmbt_split() to fallback to the lowspace allocator 2008-07-28 16:59:13 +10:00
xfs_bmap_btree.h [XFS] remove shouting-indirection macros from xfs_sb.h 2008-04-10 16:24:45 +10:00
xfs_bmap.c [XFS] Kill shouty XFS_ITOV() macro 2008-08-13 16:00:45 +10:00
xfs_bmap.h [XFS] Restore the lowspace extent allocator algorithm 2008-07-28 16:59:11 +10:00
xfs_btree.c
xfs_btree.h [XFS] Fix up sparse warnings. 2008-02-07 18:14:38 +11:00
xfs_buf_item.c [XFS] Remove unused arg from kmem_free() 2008-07-28 16:58:07 +10:00
xfs_buf_item.h [XFS] Fix up sparse warnings. 2008-02-07 18:14:38 +11:00
xfs_clnt.h [XFS] Fix up noattr2 so that it will properly update the versionnum and 2008-07-28 16:58:05 +10:00
xfs_da_btree.c [XFS] streamline init/exit path 2008-07-28 16:59:25 +10:00
xfs_da_btree.h [XFS] Return case-insensitive match for dentry cache 2008-07-28 16:58:40 +10:00
xfs_dfrag.c [XFS] Kill shouty XFS_ITOV() macro 2008-08-13 16:00:45 +10:00
xfs_dfrag.h
xfs_dinode.h [XFS] Remove CFORK macros and use code directly in IFORK and DFORK macros. 2008-02-07 18:19:24 +11:00
xfs_dir2_block.c [XFS] Return case-insensitive match for dentry cache 2008-07-28 16:58:40 +10:00
xfs_dir2_block.h [XFS] use filldir internally 2007-10-15 16:49:49 +10:00
xfs_dir2_data.c [XFS] Name operation vector for hash and compare 2008-07-28 16:58:36 +10:00
xfs_dir2_data.h
xfs_dir2_leaf.c [XFS] Fix CI lookup in leaf-form directories 2008-07-28 16:59:06 +10:00
xfs_dir2_leaf.h [XFS] use filldir internally 2007-10-15 16:49:49 +10:00
xfs_dir2_node.c [XFS] Fix returning case-preserved name with CI node form directories 2008-07-28 16:59:01 +10:00
xfs_dir2_node.h
xfs_dir2_sf.c [XFS] Return case-insensitive match for dentry cache 2008-07-28 16:58:40 +10:00
xfs_dir2_sf.h [XFS] Pack some shortform dir2 structures for the ARM old ABI 2008-07-28 16:58:50 +10:00
xfs_dir2_trace.c [XFS] Add op_flags field and helpers to xfs_da_args 2008-07-28 16:58:37 +10:00
xfs_dir2_trace.h
xfs_dir2.c [XFS] Zero uninitialised xfs_da_args structure in xfs_dir2.c 2008-07-28 16:58:46 +10:00
xfs_dir2.h [XFS] Return case-insensitive match for dentry cache 2008-07-28 16:58:40 +10:00
xfs_dmapi.h [XFS] Now that xfs_setattr is only used for attributes set from ->setattr 2008-07-28 16:59:37 +10:00
xfs_dmops.c [XFS] fixups after behavior removal merge into mainline git 2007-10-19 17:14:45 +10:00
xfs_error.c [XFS] streamline init/exit path 2008-07-28 16:59:25 +10:00
xfs_error.h [XFS] streamline init/exit path 2008-07-28 16:59:25 +10:00
xfs_extfree_item.c [XFS] Remove unused arg from kmem_free() 2008-07-28 16:58:07 +10:00
xfs_extfree_item.h
xfs_filestream.c [XFS] streamline init/exit path 2008-07-28 16:59:25 +10:00
xfs_filestream.h
xfs_fs.h [XFS] attrmulti cleanup 2008-07-28 16:59:09 +10:00
xfs_fsops.c [XFS] XFS: ASCII case-insensitive support 2008-07-28 16:58:42 +10:00
xfs_fsops.h
xfs_ialloc_btree.c xfs: convert beX_add to beX_add_cpu (new common API) 2008-02-13 16:21:19 -08:00
xfs_ialloc_btree.h [XFS] kill XFS_INOBT_IS_FREE_DISK 2008-02-07 18:12:41 +11:00
xfs_ialloc.c [XFS] Don't initialise new inode generation numbers to zero 2008-04-29 15:58:56 +10:00
xfs_ialloc.h [XFS] Pick a single default inode cluster size. 2007-10-15 16:39:35 +10:00
xfs_iget.c [XFS] Avoid directly referencing the VFS inode. 2008-08-13 15:45:15 +10:00
xfs_imap.h
xfs_inode_item.c [XFS] Remove unused arg from kmem_free() 2008-07-28 16:58:07 +10:00
xfs_inode_item.h [XFS] Use xfs_inode_clean() in more places 2008-04-18 11:37:51 +10:00
xfs_inode.c [XFS] Use KM_NOFS for incore inode extent tree allocation V2 2008-08-13 16:02:51 +10:00
xfs_inode.h [XFS] XFS: Kill xfs_vtoi() 2008-08-13 16:01:45 +10:00
xfs_inum.h
xfs_iomap.c [XFS] use minleft when allocating in xfs_bmbt_split() 2008-07-28 16:59:10 +10:00
xfs_iomap.h [XFS] kill unnessecary ioops indirection 2008-02-07 16:44:14 +11:00
xfs_itable.c [XFS] Kill shouty XFS_ITOV() macro 2008-08-13 16:00:45 +10:00
xfs_itable.h
xfs_log_priv.h [XFS] Convert l_flushsema to a sv_t 2008-07-28 16:58:12 +10:00
xfs_log_recover.c [XFS] Remove unused arg from kmem_free() 2008-07-28 16:58:07 +10:00
xfs_log_recover.h
xfs_log.c [XFS] Convert l_flushsema to a sv_t 2008-07-28 16:58:12 +10:00
xfs_log.h [XFS] Sanitise xfs_log_force error checking. 2008-04-18 12:02:20 +10:00
xfs_mount.c [XFS] Don't assert if trying to mount with blocksize > pagesize 2008-07-28 16:59:15 +10:00
xfs_mount.h [XFS] streamline init/exit path 2008-07-28 16:59:25 +10:00
xfs_mru_cache.c [XFS] streamline init/exit path 2008-07-28 16:59:25 +10:00
xfs_mru_cache.h
xfs_qmops.c [XFS] Unwrap XFS_SB_LOCK. 2008-02-07 16:47:15 +11:00
xfs_quota.h [XFS] remove dependency of the quota module on behaviors 2007-10-16 11:43:26 +10:00
xfs_refcache.h
xfs_rename.c [XFS] Don't update mtime on rename source 2008-07-28 16:59:14 +10:00
xfs_rtalloc.c [XFS] Use the generic bitops rather than implementing them ourselves. 2008-08-13 15:41:12 +10:00
xfs_rtalloc.h [XFS] optimize XFS_IS_REALTIME_INODE w/o realtime config 2008-02-07 18:16:43 +11:00
xfs_rw.c [XFS] Sanitise xfs_log_force error checking. 2008-04-18 12:02:20 +10:00
xfs_rw.h [XFS] optimize XFS_IS_REALTIME_INODE w/o realtime config 2008-02-07 18:16:43 +11:00
xfs_sb.h [XFS] XFS: ASCII case-insensitive support 2008-07-28 16:58:42 +10:00
xfs_trans_ail.c [XFS] replace remaining __FUNCTION__ occurrences 2008-04-18 11:51:26 +10:00
xfs_trans_buf.c [XFS] Ensure errors from xfs_bdstrat() are correctly checked. 2008-04-18 12:00:24 +10:00
xfs_trans_extfree.c [XFS] Radix tree based inode caching 2007-10-15 16:50:50 +10:00
xfs_trans_inode.c [XFS] Remove unused arg from kmem_free() 2008-07-28 16:58:07 +10:00
xfs_trans_item.c [XFS] Remove unused arg from kmem_free() 2008-07-28 16:58:07 +10:00
xfs_trans_priv.h [XFS] Move AIL pushing into it's own thread 2008-02-07 18:22:51 +11:00
xfs_trans_space.h
xfs_trans.c [XFS] Remove unused arg from kmem_free() 2008-07-28 16:58:07 +10:00
xfs_trans.h [XFS] Replace custom AIL linked-list code with struct list_head 2008-04-18 11:41:57 +10:00
xfs_types.h [XFS] remove bhv_vname_t and xfs_rename code 2008-04-18 12:00:12 +10:00
xfs_utils.c [XFS] Avoid directly referencing the VFS inode. 2008-08-13 15:45:15 +10:00
xfs_utils.h [XFS] Kill shouty XFS_ITOV() macro 2008-08-13 16:00:45 +10:00
xfs_vfsops.c [XFS] Kill shouty XFS_ITOV() macro 2008-08-13 16:00:45 +10:00
xfs_vfsops.h [XFS] merge xfs_mount into xfs_fs_fill_super 2008-07-28 16:58:21 +10:00
xfs_vnodeops.c [XFS] Kill shouty XFS_ITOV() macro 2008-08-13 16:00:45 +10:00
xfs_vnodeops.h [XFS] Now that xfs_setattr is only used for attributes set from ->setattr 2008-07-28 16:59:37 +10:00
xfs.h [XFS] Fix broken HAVE_SPLICE removal commit. 2008-04-29 15:57:49 +10:00