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08fb39051f
linux/fs/xfs
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Dave Chinner 08fb39051f xfs: avoid nesting transactions in xfs_qm_scall_setqlim() 
Lockdep reports:

=============================================
[ INFO: possible recursive locking detected ]
3.9.0+ #3 Not tainted
---------------------------------------------
setquota/28368 is trying to acquire lock:
 (sb_internal){++++.?}, at: [<c11e8846>] xfs_trans_alloc+0x26/0x50

but task is already holding lock:
 (sb_internal){++++.?}, at: [<c11e8846>] xfs_trans_alloc+0x26/0x50

from xfs_qm_scall_setqlim()->xfs_dqread() when a dquot needs to be
allocated.

xfs_qm_scall_setqlim() is starting a transaction and then not
passing it into xfs_qm_dqet() and so it starts it's own transaction
when allocating the dquot.  Splat!

Fix this by not allocating the dquot in xfs_qm_scall_setqlim()
inside the setqlim transaction. This requires getting the dquot
first (and allocating it if necessary) then dropping and relocking
the dquot before joining it to the setqlim transaction.

Reported-by: Michael L. Semon <mlsemon35@gmail.com>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
(cherry picked from commit f648167f3a)
2013-05-30 17:10:56 -05:00
..
Kconfig xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
kmem.c xfs: switch to proper __bitwise type for KM_... flags 2012-05-29 23:28:32 -04:00
kmem.h xfs: switch to proper __bitwise type for KM_... flags 2012-05-29 23:28:32 -04:00
Makefile xfs: split remote attribute code out 2013-04-27 12:49:32 -05:00
mrlock.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
time.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
uuid.c xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
uuid.h xfs: add CRC infrastructure 2012-11-19 20:11:24 -06:00
xfs_acl.c userns: Pass a userns parameter into posix_acl_to_xattr and posix_acl_from_xattr 2012-09-18 01:01:35 -07:00
xfs_acl.h xfs: Fix build breakage in xfs_iops.c when CONFIG_FS_POSIX_ACL is not set 2011-08-01 02:35:04 -04:00
xfs_ag.h xfs: add CRC checks to the AGI 2013-04-21 14:57:43 -05:00
xfs_alloc_btree.c xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_alloc_btree.h xfs: add support for large btree blocks 2013-04-21 14:53:46 -05:00
xfs_alloc.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_alloc.h xfs: convert buffer verifiers to an ops structure. 2012-11-15 21:35:12 -06:00
xfs_aops.c xfs: fix sub-page blocksize data integrity writes 2013-05-24 16:26:51 -05:00
xfs_aops.h Prefix IO_XX flags with XFS_IO_XX to avoid namespace colision. 2012-07-22 11:00:55 -05:00
xfs_attr_leaf.c xfs: remote attribute lookups require the value length 2013-05-24 16:31:20 -05:00
xfs_attr_leaf.h xfs: add CRCs to attr leaf blocks 2013-04-27 12:45:01 -05:00
xfs_attr_remote.c xfs: Remote attr validation fixes and optimisations 2013-05-01 14:13:55 -05:00
xfs_attr_remote.h xfs: add buffer types to directory and attribute buffers 2013-04-27 13:01:06 -05:00
xfs_attr_sf.h
xfs_attr.c xfs: split remote attribute code out 2013-04-27 12:49:32 -05:00
xfs_attr.h xfs: split remote attribute code out 2013-04-27 12:49:32 -05:00
xfs_bit.c
xfs_bit.h
xfs_bmap_btree.c xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_bmap_btree.h xfs: add support for large btree blocks 2013-04-21 14:53:46 -05:00
xfs_bmap.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_bmap.h xfs: move allocation stack switch up to xfs_bmapi_allocate 2012-10-18 17:42:48 -05:00
xfs_btree.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_btree.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_buf_item.c xfs: recheck buffer pinned status after push trylock failure 2013-02-14 17:23:42 -06:00
xfs_buf_item.h xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_buf.c xfs: fix missing KM_NOFS tags to keep lockdep happy 2013-05-24 16:29:15 -05:00
xfs_buf.h xfs: use b_maps[] for discontiguous buffers 2013-01-16 16:07:11 -06:00
xfs_cksum.h xfs: add CRC infrastructure 2012-11-19 20:11:24 -06:00
xfs_da_btree.c xfs: xfs_da3_node_read_verify() doesn't handle XFS_ATTR3_LEAF_MAGIC 2013-05-24 16:29:37 -05:00
xfs_da_btree.h xfs: add buffer types to directory and attribute buffers 2013-04-27 13:01:06 -05:00
xfs_dfrag.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
xfs_dfrag.h
xfs_dinode.h xfs: add version 3 inode format with CRCs 2013-04-21 15:03:33 -05:00
xfs_dir2_block.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_dir2_data.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_dir2_format.h xfs: shortform directory offsets change for dir3 format 2013-04-27 12:24:32 -05:00
xfs_dir2_leaf.c xfs: fix missing KM_NOFS tags to keep lockdep happy 2013-05-24 16:29:15 -05:00
xfs_dir2_node.c xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_dir2_priv.h xfs: add buffer types to directory and attribute buffers 2013-04-27 13:01:06 -05:00
xfs_dir2_sf.c xfs: shortform directory offsets change for dir3 format 2013-04-27 12:24:32 -05:00
xfs_dir2.c xfs: remove struct xfs_dabuf and infrastructure 2012-07-01 14:50:07 -05:00
xfs_dir2.h xfs: reshuffle dir2 headers 2011-07-13 13:43:48 +02:00
xfs_discard.c xfs: check for possible overflow in xfs_ioc_trim 2012-08-23 14:48:44 -05:00
xfs_discard.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_dquot_item.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_dquot_item.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_dquot.c xfs: add CRC checks for quota blocks 2013-04-21 14:58:22 -05:00
xfs_dquot.h xfs: xfs_dquot prealloc throttling watermarks and low free space 2013-03-22 16:06:30 -05:00
xfs_error.c xfs: increase hexdump output in xfs_corruption_error 2013-04-21 14:48:41 -05:00
xfs_error.h
xfs_export.c fs: encode_fh: return FILEID_INVALID if invalid fid_type 2013-02-26 02:46:10 -05:00
xfs_export.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_extent_busy.c xfs: make xfs_extent_busy_trim not static 2012-05-14 16:21:04 -05:00
xfs_extent_busy.h xfs: make xfs_extent_busy_trim not static 2012-05-14 16:21:04 -05:00
xfs_extfree_item.c xfs: Don't reference the EFI after it is freed 2013-05-24 16:27:57 -05:00
xfs_extfree_item.h xfs: don't free EFIs before the EFDs are committed 2013-04-05 13:25:35 -05:00
xfs_file.c aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
xfs_filestream.c xfs: rename allocation range fields in struct xfs_bmalloca 2011-10-11 21:15:06 -05:00
xfs_filestream.h
xfs_fs.h xfs: add minimum file size filtering to eofblocks scan 2012-11-08 15:32:29 -06:00
xfs_fsops.c xfs: add CRC checks to the AGI 2013-04-21 14:57:43 -05:00
xfs_fsops.h
xfs_globals.c xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_ialloc_btree.c xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_ialloc_btree.h xfs: add support for large btree blocks 2013-04-21 14:53:46 -05:00
xfs_ialloc.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_ialloc.h xfs: convert buffer verifiers to an ops structure. 2012-11-15 21:35:12 -06:00
xfs_icache.c xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_icache.h xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_inode_item.c xfs: add version 3 inode format with CRCs 2013-04-21 15:03:33 -05:00
xfs_inode_item.h xfs remove the XFS_TRANS_DEBUG routines 2012-12-17 16:29:00 -06:00
xfs_inode.c xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_inode.h xfs: add version 3 inode format with CRCs 2013-04-21 15:03:33 -05:00
xfs_inum.h xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_ioctl32.c xfs: fallback to vmalloc for large buffers in xfs_compat_attrlist_by_handle 2013-05-07 19:00:10 -05:00
xfs_ioctl32.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_ioctl.c xfs: fallback to vmalloc for large buffers in xfs_attrlist_by_handle 2013-05-07 18:56:38 -05:00
xfs_ioctl.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_iomap.c xfs: xfs_iomap_prealloc_size() tracepoint 2013-03-22 16:07:56 -05:00
xfs_iomap.h
xfs_iops.c xfs: remove xfs_flush_pages 2012-11-14 15:12:45 -06:00
xfs_iops.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_itable.c xfs: convert buffer verifiers to an ops structure. 2012-11-15 21:35:12 -06:00
xfs_itable.h
xfs_linux.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_log_cil.c xfs: fix missing KM_NOFS tags to keep lockdep happy 2013-05-24 16:29:15 -05:00
xfs_log_priv.h xfs: Remove the obsolete XLOG_CIL_HARD_SPACE_LIMIT() macros 2013-04-16 13:18:33 -05:00
xfs_log_recover.c xfs: fix da node magic number mismatches 2013-05-01 14:48:30 -05:00
xfs_log_recover.h
xfs_log.c xfs: rename random32() to prandom_u32() 2013-03-07 12:33:57 -06:00
xfs_log.h xfs: xfs_quiesce_attr() should quiesce the log like unmount 2012-10-17 13:39:14 -05:00
xfs_message.c xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_message.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_mount.c xfs: implement extended feature masks 2013-04-27 13:05:18 -05:00
xfs_mount.h xfs: add CRC checks to the superblock 2013-04-27 13:03:12 -05:00
xfs_mru_cache.c
xfs_mru_cache.h
xfs_qm_bhv.c xfs: Remove boolean_t typedef completely. 2013-01-17 17:32:57 -06:00
xfs_qm_syscalls.c xfs: avoid nesting transactions in xfs_qm_scall_setqlim() 2013-05-30 17:10:56 -05:00
xfs_qm.c xfs: add CRC checks for quota blocks 2013-04-21 14:58:22 -05:00
xfs_qm.h xfs: add CRC checks for quota blocks 2013-04-21 14:58:22 -05:00
xfs_quota_priv.h xfs: use per-filesystem radix trees for dquot lookup 2012-03-14 11:09:06 -05:00
xfs_quota.h xfs: add CRC checks for quota blocks 2013-04-21 14:58:22 -05:00
xfs_quotaops.c userns: Convert qutoactl 2012-09-18 01:01:39 -07:00
xfs_rename.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_rtalloc.c xfs: uncached buffer reads need to return an error 2012-11-15 21:34:05 -06:00
xfs_rtalloc.h xfs: Remove the macro XFS_BUF_PTR 2011-07-25 15:03:13 -05:00
xfs_sb.h xfs: implement extended feature masks 2013-04-27 13:05:18 -05:00
xfs_stats.c xfs: use common code for quota statistics 2012-03-14 11:09:06 -05:00
xfs_stats.h xfs: use common code for quota statistics 2012-03-14 11:09:06 -05:00
xfs_super.c fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
xfs_super.h xfs: xfs_sync_data is redundant. 2012-10-17 12:01:25 -05:00
xfs_symlink.c xfs: add CRC checks to remote symlinks 2013-04-27 11:49:28 -05:00
xfs_symlink.h xfs: add CRC checks to remote symlinks 2013-04-27 11:49:28 -05:00
xfs_sysctl.c xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_sysctl.h xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_trace.c xfs: add CRCs to dir2/da node blocks 2013-04-27 12:33:38 -05:00
xfs_trace.h xfs: xfs_iomap_prealloc_size() tracepoint 2013-03-22 16:07:56 -05:00
xfs_trans_ail.c xfs remove the XFS_TRANS_DEBUG routines 2012-12-17 16:29:00 -06:00
xfs_trans_buf.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_trans_dquot.c xfs: pass xfs_dquot to xfs_qm_adjust_dqlimits() instead of xfs_disk_dquot_t 2013-03-22 16:05:52 -05:00
xfs_trans_extfree.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_trans_inode.c xfs remove the XFS_TRANS_DEBUG routines 2012-12-17 16:29:00 -06:00
xfs_trans_priv.h xfs: re-enable xfsaild idle mode and fix associated races 2012-07-29 16:27:57 -05:00
xfs_trans_space.h
xfs_trans.c xfs: refactor space log reservation for XFS_TRANS_ATTR_SET 2013-02-01 14:56:31 -06:00
xfs_trans.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_types.h xfs: Remove boolean_t typedef completely. 2013-01-17 17:32:57 -06:00
xfs_utils.c xfs: remove the alloc_done argument to xfs_dialloc 2012-07-29 16:00:31 -05:00
xfs_utils.h xfs: propagate umode_t 2012-01-03 22:55:00 -05:00
xfs_vnode.h xfs: remove remaining scraps of struct xfs_iomap 2012-03-15 13:40:16 -05:00
xfs_vnodeops.c xfs: fix rounding in xfs_free_file_space 2013-05-24 16:27:41 -05:00
xfs_vnodeops.h xfs: byte range granularity for XFS_IOC_ZERO_RANGE 2012-11-29 14:21:46 -06:00
xfs_xattr.c xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00