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Eric Sesterhenn 1558182f65 bfs: fix Lockdep warning 
This fixes:

  =============================================
  [ INFO: possible recursive locking detected ]
  2.6.27-rc5-00283-g70bb089 #68
  ---------------------------------------------
  touch/6855 is trying to acquire lock:
   (&info->bfs_lock){--..}, at: [<c02262f5>] bfs_delete_inode+0x9e/0x18c

  but task is already holding lock:
   (&info->bfs_lock){--..}, at: [<c0226c00>] bfs_create+0x45/0x187

  other info that might help us debug this:
  2 locks held by touch/6855:
   #0:  (&type->i_mutex_dir_key#5){--..}, at: [<c018ad13>] do_filp_open+0x10b/0x62f
   #1:  (&info->bfs_lock){--..}, at: [<c0226c00>] bfs_create+0x45/0x187

  stack backtrace:
  Pid: 6855, comm: touch Not tainted 2.6.27-rc5-00283-g70bb089 #68
   [<c013e769>] validate_chain+0x458/0x9f4
   [<c013bece>] ? trace_hardirqs_off+0xb/0xd
   [<c013f36b>] __lock_acquire+0x666/0x6e0
   [<c013f440>] lock_acquire+0x5b/0x77
   [<c02262f5>] ? bfs_delete_inode+0x9e/0x18c
   [<c06aab74>] mutex_lock_nested+0xbc/0x234
   [<c02262f5>] ? bfs_delete_inode+0x9e/0x18c
   [<c02262f5>] ? bfs_delete_inode+0x9e/0x18c
   [<c02262f5>] bfs_delete_inode+0x9e/0x18c
   [<c0226257>] ? bfs_delete_inode+0x0/0x18c
   [<c01925e1>] generic_delete_inode+0x94/0xfe
   [<c019265d>] generic_drop_inode+0x12/0x12f
   [<c0191b7e>] iput+0x4b/0x4e
   [<c0226d1e>] bfs_create+0x163/0x187
   [<c0188b42>] vfs_create+0xa6/0x114
   [<c018adb5>] do_filp_open+0x1ad/0x62f
   [<c0107cdc>] ? native_sched_clock+0x82/0x96
   [<c06ac309>] ? _spin_unlock+0x27/0x3c
   [<c019379e>] ? alloc_fd+0xbf/0xc9
   [<c06ae2f4>] ? sub_preempt_count+0x9d/0xab
   [<c019379e>] ? alloc_fd+0xbf/0xc9
   [<c0180391>] do_sys_open+0x42/0xb8
   [<c041d564>] ? trace_hardirqs_on_thunk+0xc/0x10
   [<c0180449>] sys_open+0x1e/0x26
   [<c01038bd>] sysenter_do_call+0x12/0x31
   =======================

The problem is that we don't unlock the bfs->lock mutex before calling
iput (we do in the other cases).

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-09-13 14:41:51 -07:00
..
9p
[PATCH] fix ->llseek() for a bunch of directories
2008-08-25 01:18:09 -04:00
adfs
[PATCH] fix ->llseek() for a bunch of directories
2008-08-25 01:18:09 -04:00
affs
[PATCH] fix ->llseek() for a bunch of directories
2008-08-25 01:18:09 -04:00
afs
mm: rename page trylock
2008-08-04 21:31:34 -07:00
autofs
mount options: fix autofs
2008-02-08 09:22:40 -08:00
autofs4
[PATCH] fix ->llseek() for a bunch of directories
2008-08-25 01:18:09 -04:00
befs
[PATCH] fix ->llseek() for a bunch of directories
2008-08-25 01:18:09 -04:00
bfs
bfs: fix Lockdep warning
2008-09-13 14:41:51 -07:00
cifs
[CIFS] Turn off Unicode during session establishment for plaintext authentication
2008-08-28 15:32:22 +00:00
coda
[PATCH] sanitize __user_walk_fd() et.al.
2008-07-26 20:53:34 -04:00
configfs
[PATCH] configfs: Consolidate locking around configfs_detach_prep() in configfs_rmdir()
2008-08-22 11:09:02 -07:00
cramfs
cramfs: fix named-pipe handling
2008-08-20 15:40:32 -07:00
debugfs
debugfs: Implement debugfs_remove_recursive()
2008-07-21 21:54:59 -07:00
devpts
[PATCH] devpts: switch to IDA
2008-08-01 11:25:29 -04:00
dlm
dlm: rename structs
2008-08-13 12:47:36 -05:00
ecryptfs
eCryptfs: use page_alloc not kmalloc to get a page of memory
2008-07-28 16:30:21 -07:00
efs
[PATCH] fix efs_lookup()
2008-08-25 01:18:04 -04:00
exportfs
fs: replace remaining __FUNCTION__ occurrences
2008-04-30 08:29:54 -07:00
ext2
vfs: pagecache usage optimization for pagesize!=blocksize
2008-07-28 16:30:21 -07:00
ext3
[PATCH] fix races and leaks in vfs_quota_on() users
2008-08-01 11:25:25 -04:00
ext4
ext4: Initialize writeback_index to 0 when allocating a new inode
2008-08-19 21:14:52 -04:00
fat
vfat: fix 'sync' mount deadlock due to BKL->lock_super conversion
2008-08-20 08:31:19 -07:00
freevxfs
fs/freevxfs/: proper externs
2008-04-29 08:06:00 -07:00
fuse
[PATCH] fix MAY_CHDIR/MAY_ACCESS/LOOKUP_ACCESS mess
2008-07-26 20:53:21 -04:00
gfs2
[PATCH] don't pass nameidata to gfs2_lookupi()
2008-07-26 20:53:36 -04:00
hfs
[PATCH] f_count may wrap around
2008-07-26 20:53:40 -04:00
hfsplus
[PATCH] f_count may wrap around
2008-07-26 20:53:40 -04:00
hostfs
[PATCH] sanitize ->permission() prototype
2008-07-26 20:53:14 -04:00
hpfs
[patch 05/14] hpfs: dont call permission()
2008-07-26 20:53:13 -04:00
hppfs
[patch] hppfs: remove hppfs_permission
2008-07-26 20:53:07 -04:00
hugetlbfs
SL*B: drop kmem cache argument from constructor
2008-07-26 12:00:07 -07:00
isofs
SL*B: drop kmem cache argument from constructor
2008-07-26 12:00:07 -07:00
jbd
Merge branch 'core/locking' into core/urgent
2008-08-12 00:11:49 +02:00
jbd2
Merge branch 'core/locking' into core/urgent
2008-08-12 00:11:49 +02:00
jffs2
removed unused #include <linux/version.h>'s
2008-08-23 12:14:12 -07:00
jfs
[PATCH] sanitize ->permission() prototype
2008-07-26 20:53:14 -04:00
lockd
Merge branch 'for-2.6.27' of git://linux-nfs.org/~bfields/linux
2008-08-12 16:39:22 -07:00
minix
SL*B: drop kmem cache argument from constructor
2008-07-26 12:00:07 -07:00
msdos
fatfs: add UTC timestamp option
2008-07-25 10:53:34 -07:00
ncpfs
[PATCH] don't pass nameidata to __ncp_lookup_validate()
2008-07-26 20:53:37 -04:00
nfs
NFS: Restore missing hunk in NFS mount option parser
2008-09-08 15:35:19 -07:00
nfs_common
…
nfsd
nfsd: fix buffer overrun decoding NFSv4 acl
2008-09-01 14:24:24 -04:00
nls
sparse pointer use of zero as null
2007-10-18 14:37:31 -07:00
ntfs
NTFS: update homepage
2008-09-02 19:21:37 -07:00
ocfs2
ocfs2: Fix a bug in direct IO read.
2008-09-10 01:44:08 -07:00
omfs
omfs: fix oops when file metadata is corrupted
2008-08-15 08:35:44 -07:00
openpromfs
SL*B: drop kmem cache argument from constructor
2008-07-26 12:00:07 -07:00
partitions
fs/partitions/efi: convert to pr_debug
2008-07-25 10:53:44 -07:00
proc
proc: more debugging for "already registered" case
2008-09-13 14:41:50 -07:00
qnx4
SL*B: drop kmem cache argument from constructor
2008-07-26 12:00:07 -07:00
ramfs
ramfs: enable splice write
2008-07-04 09:52:14 +02:00
reiserfs
reiserfs: removed duplicated #include
2008-08-12 16:07:30 -07:00
romfs
romfs_readpage: don't report errors for pages beyond i_size
2008-07-30 14:30:34 -07:00
smbfs
[PATCH] sanitize ->permission() prototype
2008-07-26 20:53:14 -04:00
sysfs
Use WARN() in fs/sysfs
2008-07-26 12:00:07 -07:00
sysv
SL*B: drop kmem cache argument from constructor
2008-07-26 12:00:07 -07:00
ubifs
UBIFS: make minimum fanout 3
2008-09-05 20:02:35 +03:00
udf
udf: add llseek method
2008-09-08 20:31:04 +02:00
ufs
Revert "UFS: add const to parser token table"
2008-08-04 16:50:38 -07:00
vfat
fatfs: add UTC timestamp option
2008-07-25 10:53:34 -07:00
xfs
[PATCH] fix ->llseek() for a bunch of directories
2008-08-25 01:18:09 -04:00
aio.c
[PATCH] f_count may wrap around
2008-07-26 20:53:40 -04:00
anon_inodes.c
flag parameters: NONBLOCK in anon_inode_getfd
2008-07-24 10:47:28 -07:00
attr.c
[patch 4/4] vfs: immutable inode checking cleanup
2008-07-26 20:53:28 -04:00
bad_inode.c
[PATCH] sanitize ->permission() prototype
2008-07-26 20:53:14 -04:00
binfmt_aout.c
tracehook: exec
2008-07-26 12:00:08 -07:00
binfmt_elf_fdpic.c
binfmt_elf_fdpic: Magical stack pointer index, for NEW_AUX_ENT compat.
2008-07-28 18:10:28 +09:00
binfmt_elf.c
tracehook: exec
2008-07-26 12:00:08 -07:00
binfmt_em86.c
binfmt_misc.c: avoid potential kernel stack overflow
2008-04-29 08:06:04 -07:00
binfmt_flat.c
binfmt_flat: Stub in a FLAT_PLAT_INIT().
2008-08-11 20:17:55 +09:00
binfmt_misc.c
binfmt_misc: fix false -ENOEXEC when coupled with other binary handlers
2008-08-20 15:40:31 -07:00
binfmt_script.c
binfmt_misc.c: avoid potential kernel stack overflow
2008-04-29 08:06:04 -07:00
binfmt_som.c
tracehook: exec
2008-07-26 12:00:08 -07:00
bio-integrity.c
bio-integrity: remove EXPORT_SYMBOL for bio_integrity_init_slab()
2008-07-28 16:30:21 -07:00
bio.c
bio: fix __bio_copy_iov() handling of bio->bv_len
2008-08-27 09:50:19 +02:00
block_dev.c
[PATCH] switch mtd and dm-table to lookup_bdev()
2008-08-01 11:25:31 -04:00
buffer.c
block: submit_bh() inadvertently discards barrier flag on a sync write
2008-08-27 09:50:19 +02:00
char_dev.c
Remove the lock_kernel() call from chrdev_open()
2008-06-20 14:05:53 -06:00
compat_binfmt_elf.c
x86: compat_binfmt_elf
2008-01-30 13:31:46 +01:00
compat_ioctl.c
remove unused #include <linux/dirent.h>'s
2008-07-25 10:53:34 -07:00
compat.c
[PATCH] fix regular readdir() and friends
2008-08-25 01:18:08 -04:00
dcache.c
[PATCH] change d_add_ci argument ordering
2008-08-25 01:18:05 -04:00
dcookies.c
d_path: Make d_path() use a struct path
2008-02-14 21:17:09 -08:00
direct-io.c
dio: use get_user_pages_fast
2008-07-26 12:00:06 -07:00
dnotify.c
[PATCH] split linux/file.h
2008-05-01 13:08:16 -04:00
dquot.c
[PATCH] fix races and leaks in vfs_quota_on() users
2008-08-01 11:25:25 -04:00
drop_caches.c
vfs: skip inodes without pages to free in drop_pagecache_sb()
2008-04-29 08:06:05 -07:00
eventfd.c
flag parameters: check magic constants
2008-07-24 10:47:29 -07:00
eventpoll.c
fs/eventpoll.c: fix sys_epoll_create1() comment
2008-08-12 16:07:30 -07:00
exec.c
exec: include pagemap.h again to fix build
2008-07-28 16:30:20 -07:00
fcntl.c
[PATCH] clean dup2() up a bit
2008-08-01 11:25:24 -04:00
fifo.c
[PATCH] reuse xxx_fifo_fops for xxx_pipe_fops
2008-07-26 20:53:06 -04:00
file_table.c
[PATCH] f_count may wrap around
2008-07-26 20:53:40 -04:00
file.c
[PATCH] merge locate_fd() and get_unused_fd()
2008-08-01 11:25:23 -04:00
filesystems.c
…
fs-writeback.c
VFS: export sync_sb_inodes
2008-07-14 19:10:52 +03:00
generic_acl.c
…
inode.c
fs/inode.c: properly init address_space->writeback_index
2008-08-15 08:35:44 -07:00
inotify_user.c
[PATCH] sanitize __user_walk_fd() et.al.
2008-07-26 20:53:34 -04:00
inotify.c
inotify: remove debug code
2008-02-06 10:41:07 -08:00
internal.h
[PATCH] move a bunch of declarations to fs/internal.h
2008-04-21 23:11:01 -04:00
ioctl.c
make vfs_ioctl() static
2008-04-29 08:06:00 -07:00
ioprio.c
fix setpriority(PRIO_PGRP) thread iterator breakage
2008-08-20 15:40:32 -07:00
Kconfig
[CIFS] Reorder cifs config item for better clarity
2008-08-26 18:32:28 +00:00
Kconfig.binfmt
sh: Initial ELF FDPIC support.
2008-07-28 18:10:28 +09:00
libfs.c
VFS: increase pseudo-filesystem block size to PAGE_SIZE
2008-07-30 09:41:44 -07:00
locks.c
SL*B: drop kmem cache argument from constructor
2008-07-26 12:00:07 -07:00
Makefile
omfs: update kbuild to include OMFS
2008-07-26 12:00:05 -07:00
mbcache.c
vfs: fix possible deadlock in ext2, ext3, ext4 when using xattrs
2008-04-15 19:35:41 -07:00
mpage.c
vfs: add hooks for ext4's delayed allocation support
2008-07-11 19:27:31 -04:00
namei.c
[patch 3/4] vfs: remove unused nameidata argument of may_create()
2008-08-01 11:25:30 -04:00
namespace.c
[PATCH] pass struct path * to do_add_mount()
2008-08-01 11:25:32 -04:00
nfsctl.c
Introduce path_put()
2008-02-14 21:13:33 -08:00
no-block.c
…
open.c
[PATCH] merge locate_fd() and get_unused_fd()
2008-08-01 11:25:23 -04:00
pipe.c
[PATCH] reuse xxx_fifo_fops for xxx_pipe_fops
2008-07-26 20:53:06 -04:00
pnode.c
[patch 7/7] vfs: mountinfo: show dominating group id
2008-04-23 00:05:09 -04:00
pnode.h
[patch 7/7] vfs: mountinfo: show dominating group id
2008-04-23 00:05:09 -04:00
posix_acl.c
…
quota_v1.c
quota: move function-macros from quota.h to quotaops.h
2008-07-25 10:53:35 -07:00
quota_v2.c
quota: move function-macros from quota.h to quotaops.h
2008-07-25 10:53:35 -07:00
quota.c
quota: cleanup loop in sync_dquots()
2008-07-25 10:53:35 -07:00
read_write.c
Remove BKL from remote_llseek v2
2008-07-02 15:06:27 -06:00
read_write.h
…
readdir.c
[PATCH] fix regular readdir() and friends
2008-08-25 01:18:08 -04:00
select.c
Fix performance regression on lmbench select benchmark
2008-06-22 12:23:15 -07:00
seq_file.c
[PATCH] deal with the first call of ->show() generating no output
2008-08-25 01:18:10 -04:00
signalfd.c
flag parameters: check magic constants
2008-07-24 10:47:29 -07:00
splice.c
mm: rename page trylock
2008-08-04 21:31:34 -07:00
stack.c
…
stat.c
[PATCH] sanitize __user_walk_fd() et.al.
2008-07-26 20:53:34 -04:00
super.c
fix soft lock up at NFS mount via per-SB LRU-list of unused dentries
2008-07-24 10:47:15 -07:00
sync.c
SYNC_FILE_RANGE_WRITE may and will block. Document that.
2008-07-24 10:47:17 -07:00
timerfd.c
flag parameters: check magic constants
2008-07-24 10:47:29 -07:00
utimes.c
[PATCH] sanitize __user_walk_fd() et.al.
2008-07-26 20:53:34 -04:00
xattr_acl.c
…
xattr.c
[PATCH] sanitize __user_walk_fd() et.al.
2008-07-26 20:53:34 -04:00