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Frederik Deweerdt d3fc373ac5 sysfs: suppress lockdep warnings 
Lockdep issues the following warning:
[    9.064000] =============================================
[    9.064000] [ INFO: possible recursive locking detected ]
[    9.064000] 2.6.20-rc3-mm1 #3
[    9.064000] ---------------------------------------------
[    9.064000] init/1 is trying to acquire lock:
[    9.064000]  (&sysfs_inode_imutex_key){--..}, at: [<c03e6afc>] mutex_lock+0x1c/0x1f
[    9.064000]
[    9.064000] but task is already holding lock:
[    9.064000]  (&sysfs_inode_imutex_key){--..}, at: [<c03e6afc>] mutex_lock+0x1c/0x1f
[    9.065000]
[    9.065000] other info that might help us debug this:
[    9.065000] 2 locks held by init/1:
[    9.065000]  #0:  (tty_mutex){--..}, at: [<c03e6afc>] mutex_lock+0x1c/0x1f
[    9.065000]  #1:  (&sysfs_inode_imutex_key){--..}, at: [<c03e6afc>] mutex_lock+0x1c/0x1f
[    9.065000]
[    9.065000] stack backtrace:
[    9.065000]  [<c010390d>] show_trace_log_lvl+0x1a/0x30
[    9.066000]  [<c0103935>] show_trace+0x12/0x14
[    9.066000]  [<c0103a2f>] dump_stack+0x16/0x18
[    9.066000]  [<c0138cb8>] print_deadlock_bug+0xb9/0xc3
[    9.066000]  [<c0138d17>] check_deadlock+0x55/0x5a
[    9.066000]  [<c013a953>] __lock_acquire+0x371/0xbf0
[    9.066000]  [<c013b7a9>] lock_acquire+0x69/0x83
[    9.066000]  [<c03e6b7e>] __mutex_lock_slowpath+0x75/0x2d1
[    9.066000]  [<c03e6afc>] mutex_lock+0x1c/0x1f
[    9.066000]  [<c01b249c>] sysfs_drop_dentry+0xb1/0x133
[    9.066000]  [<c01b25d1>] sysfs_hash_and_remove+0xb3/0x142
[    9.066000]  [<c01b30ed>] sysfs_remove_file+0xd/0x10
[    9.067000]  [<c02849e0>] device_remove_file+0x23/0x2e
[    9.067000]  [<c02850b2>] device_del+0x188/0x1e6
[    9.067000]  [<c028511b>] device_unregister+0xb/0x15
[    9.067000]  [<c0285318>] device_destroy+0x9c/0xa9
[    9.067000]  [<c0261431>] vcs_remove_sysfs+0x1c/0x3b
[    9.067000]  [<c0267a08>] con_close+0x5e/0x6b
[    9.067000]  [<c02598f2>] release_dev+0x4c4/0x6e5
[    9.067000]  [<c0259faa>] tty_release+0x12/0x1c
[    9.067000]  [<c0174872>] __fput+0x177/0x1a0
[    9.067000]  [<c01746f5>] fput+0x3b/0x41
[    9.068000]  [<c0172ee1>] filp_close+0x36/0x65
[    9.068000]  [<c0172f73>] sys_close+0x63/0xa4
[    9.068000]  [<c0102a96>] sysenter_past_esp+0x5f/0x99
[    9.068000]  =======================

This is due to sysfs_hash_and_remove() holding dir->d_inode->i_mutex
before calling sysfs_drop_dentry() which calls orphan_all_buffers()
which in turn takes node->i_mutex.

Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com>
Cc: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07 10:37:13 -08:00
..
9p
[PATCH] 9p: null terminate error strings for debug print
2007-01-26 13:51:00 -08:00
adfs
[PATCH] adfs: fix filename handling
2007-01-05 23:55:22 -08:00
affs
[PATCH] affs: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:43 -08:00
afs
[PATCH] rename struct namespace to struct mnt_namespace
2006-12-08 08:28:51 -08:00
autofs
[PATCH] autofs: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:43 -08:00
autofs4
[PATCH] getting rid of all casts of k[cmz]alloc() calls
2006-12-13 09:05:58 -08:00
befs
[PATCH] getting rid of all casts of k[cmz]alloc() calls
2006-12-13 09:05:58 -08:00
bfs
[PATCH] update Tigran's email addresses
2006-12-13 09:05:53 -08:00
cifs
[CIFS] Minor cleanup
2007-02-06 20:43:30 +00:00
coda
[PATCH] struct path: convert coda
2006-12-08 08:28:44 -08:00
configfs
[PATCH] configfs: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:43 -08:00
cramfs
[PATCH] struct path: convert cramfs
2006-12-08 08:28:44 -08:00
debugfs
DebugFS : file/directory removal fix
2006-12-13 15:38:45 -08:00
devpts
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
dlm
[DLM] fix softlockup in dlm_recv
2007-02-05 13:38:27 -05:00
ecryptfs
[PATCH] ecryptfs: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:43 -08:00
efs
[PATCH] struct path: convert efs
2006-12-08 08:28:45 -08:00
exportfs
[PATCH] VFS: Make filldir_t and struct kstat deal in 64-bit inode numbers
2006-10-03 08:03:40 -07:00
ext2
[PATCH] LOG2: Implement a general integer log2 facility in the kernel
2006-12-08 08:28:51 -08:00
ext3
[PATCH] LOG2: Implement a general integer log2 facility in the kernel
2006-12-08 08:28:51 -08:00
ext4
[PATCH] ext4: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:41 -08:00
fat
[PATCH] fat: change uses of f_{dentry,vfsmnt} to use f_path
2006-12-08 08:28:41 -08:00
freevxfs
[PATCH] struct path: convert freevxfs
2006-12-08 08:28:45 -08:00
fuse
[PATCH] fuse: fix bug in control filesystem mount
2007-01-30 08:26:45 -08:00
gfs2
[GFS2] make gfs2_writepages() static
2007-02-07 10:48:48 -05:00
hfs
[PATCH] struct path: convert hfs
2006-12-08 08:28:45 -08:00
hfsplus
[PATCH] struct path: convert hfsplus
2006-12-08 08:28:45 -08:00
hostfs
[PATCH] uml: fix mknod
2007-01-30 08:26:44 -08:00
hpfs
[PATCH] struct path: convert hpfs
2006-12-08 08:28:45 -08:00
hppfs
[PATCH] struct path: convert hppfs
2006-12-08 08:28:45 -08:00
hugetlbfs
VM: Remove "clear_page_dirty()" and "test_clear_page_dirty()" functions
2006-12-21 09:19:57 -08:00
isofs
[PATCH] isofs: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:41 -08:00
jbd
[PATCH] jbd: wait for already submitted t_sync_datalist buffer to complete
2006-12-22 08:55:51 -08:00
jbd2
[PATCH] jbd2: wait for already submitted t_sync_datalist buffer to complete
2006-12-07 08:39:42 -08:00
jffs
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2007-01-18 10:34:51 +11:00
jffs2
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2007-01-18 10:34:51 +11:00
jfs
JFS: Remove incorrect kgdb define
2007-01-26 10:14:36 -06:00
lockd
[PATCH] fs/lockd/clntlock.c: add missing newlines to dprintk's
2007-01-30 08:26:45 -08:00
minix
[PATCH] struct path: convert minix
2006-12-08 08:28:47 -08:00
msdos
[PATCH] fat: add fat_getattr()
2006-11-16 11:43:38 -08:00
ncpfs
[PATCH] ncpfs: ensure we free wdog_pid on parse_option or fill_inode failure
2006-12-13 09:05:53 -08:00
nfs
[PATCH] Remove warning: VFS is out of sync with lock manager
2007-01-30 16:01:35 -08:00
nfs_common
[PATCH] nfs_common endianness annotations
2006-10-20 10:26:41 -07:00
nfsd
[PATCH] endianness bug: ntohl() misspelled as >> 24 in fh_verify().
2007-02-01 16:17:06 -08:00
nls
[PATCH] fs: make nls_cp936.c handle some U00XY characters and U20AC correctly
2006-12-07 08:39:46 -08:00
ntfs
[PATCH] ntfs: kmap_atomic() atomicity fix
2007-01-30 16:01:35 -08:00
ocfs2
ocfs2: ocfs2_link() journal credits update
2007-02-01 12:03:19 -08:00
openpromfs
[PATCH] struct path: convert openpromfs
2006-12-08 08:28:48 -08:00
partitions
[MIPS] Rename SNI_RM200_PCI to just SNI_RM preparing for more RM machines
2006-12-09 01:03:58 +00:00
proc
[PATCH] procfs: Fix listing of /proc/NOT_A_TGID/task
2007-02-01 16:22:41 -08:00
qnx4
[PATCH] struct path: convert qnx4
2006-12-08 08:28:48 -08:00
ramfs
[PATCH] ramfs breaks without CONFIG_BLOCK
2006-12-30 10:56:42 -08:00
reiserfs
[PATCH] resierfs: avoid tail packing if an inode was ever mmapped
2007-01-23 07:52:06 -08:00
romfs
[PATCH] struct path: convert romfs
2006-12-08 08:28:49 -08:00
smbfs
[PATCH] smbfs: Make conn_pid a struct pid
2006-12-13 09:05:53 -08:00
sysfs
sysfs: suppress lockdep warnings
2007-02-07 10:37:13 -08:00
sysv
[PATCH] fs/sysv/: proper prototypes for 2 functions
2006-12-22 08:55:47 -08:00
udf
[PATCH] struct path: convert udf
2006-12-08 08:28:50 -08:00
ufs
[PATCH] ufs: reallocation fix
2007-01-30 08:26:45 -08:00
vfat
[PATCH] fat: add fat_getattr()
2006-11-16 11:43:38 -08:00
xfs
[PATCH] Fix XFS after clear_page_dirty() removal
2006-12-21 10:01:08 -08:00
aio.c
[PATCH] aio: fix buggy put_ioctx call in aio_complete - v2
2007-02-03 11:26:06 -08:00
attr.c
[PATCH] capable/capability.h (fs/)
2006-01-11 18:42:13 -08:00
bad_inode.c
[PATCH] fix memory corruption from misinterpreted bad_inode_ops return values
2007-01-05 23:55:23 -08:00
binfmt_aout.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
binfmt_elf_fdpic.c
[PATCH] core-dumping unreadable binaries via PT_INTERP
2007-01-26 13:51:00 -08:00
binfmt_elf.c
[PATCH] core-dumping unreadable binaries via PT_INTERP
2007-01-26 13:51:00 -08:00
binfmt_em86.c
…
binfmt_flat.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
binfmt_misc.c
[PATCH] getting rid of all casts of k[cmz]alloc() calls
2006-12-13 09:05:58 -08:00
binfmt_script.c
…
binfmt_som.c
[PARISC] Fix fs/binfmt_som.c
2006-10-04 06:51:26 -06:00
bio.c
[PATCH] optimize o_direct on block devices
2006-12-13 09:05:50 -08:00
block_dev.c
[PATCH] revert blockdev direct io back to 2.6.19 version
2007-02-03 11:26:06 -08:00
buffer.c
[PATCH] Fix try_to_free_buffer() locking
2007-01-29 20:20:42 -08:00
char_dev.c
[PATCH] BLOCK: Move extern declarations out of fs/*.c into header files [try #6]
2006-09-30 20:52:18 +02:00
compat_ioctl.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
compat.c
[PATCH] fdtable: Make fdarray and fdsets equal in size
2006-12-10 09:57:22 -08:00
dcache.c
[PATCH] dcache: avoid RCU for never-hashed dentries
2006-12-07 08:39:41 -08:00
dcookies.c
[PATCH] slab: remove kmem_cache_t
2006-12-07 08:39:25 -08:00
direct-io.c
[PATCH] dio: lock refcount operations
2006-12-10 09:57:21 -08:00
dnotify.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
dquot.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
drop_caches.c
[PATCH] drop-pagecache
2006-01-08 20:12:40 -08:00
eventpoll.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
exec.c
[PATCH] fdtable: Make fdarray and fdsets equal in size
2006-12-10 09:57:22 -08:00
fcntl.c
[PATCH] fdtable: Make fdarray and fdsets equal in size
2006-12-10 09:57:22 -08:00
fifo.c
[PATCH] pipe.c/fifo.c code cleanups
2006-04-11 13:53:33 +02:00
file_table.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
file.c
[PATCH] fdtable: Provide free_fdtable() wrapper
2006-12-22 08:55:50 -08:00
filesystems.c
[PATCH] Ban register_filesystem(NULL);
2006-09-29 09:18:20 -07:00
fs-writeback.c
Write back inode data pages even when the inode itself is locked
2007-01-26 12:53:20 -08:00
generic_acl.c
[PATCH] Generic infrastructure for acls
2006-09-29 09:18:24 -07:00
inode.c
[PATCH] relative atime
2006-12-13 09:05:50 -08:00
inotify_user.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
inotify.c
[PATCH] severing fs.h, radix-tree.h -> sched.h
2006-12-04 02:00:24 -05:00
internal.h
[PATCH] CONFIG_BLOCK internal.h cleanups
2006-09-30 20:52:32 +02:00
ioctl.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
ioprio.c
[PATCH] block layer: ioprio_best function fix
2006-10-12 15:09:51 +02:00
Kconfig
[PATCH] Make JFFS depend on CONFIG_BROKEN
2006-12-22 08:55:48 -08:00
Kconfig.binfmt
[PATCH] frv: suppress configuration of certain features for FRV
2006-01-08 20:13:36 -08:00
libfs.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
locks.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
Makefile
[PATCH] fsstack: Introduce fsstack_copy_{attr,inode}_*
2006-12-08 08:28:40 -08:00
mbcache.c
[PATCH] slab: remove kmem_cache_t
2006-12-07 08:39:25 -08:00
mpage.c
[PATCH] BLOCK: Dissociate generic_writepages() from mpage stuff [try #6]
2006-09-30 20:52:26 +02:00
namei.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
namespace.c
[PATCH] relative atime
2006-12-13 09:05:50 -08:00
nfsctl.c
Remove obsolete #include <linux/config.h>
2006-06-30 19:25:36 +02:00
no-block.c
[PATCH] BLOCK: Make it possible to disable the block layer [try #6]
2006-09-30 20:52:31 +02:00
open.c
[PATCH] fdtable: Make fdarray and fdsets equal in size
2006-12-10 09:57:22 -08:00
pipe.c
[PATCH] fix leaks on pipe(2) failure exits
2006-12-21 00:16:03 -08:00
pnode.c
[PATCH] rename struct namespace to struct mnt_namespace
2006-12-08 08:28:51 -08:00
pnode.h
[PATCH] rename struct namespace to struct mnt_namespace
2006-12-08 08:28:51 -08:00
posix_acl.c
[PATCH] kmemdup: some users
2006-10-01 00:39:19 -07:00
quota_v1.c
…
quota_v2.c
[PATCH] sem2mutex: quota
2006-03-23 07:38:11 -08:00
quota.c
[PATCH] BLOCK: Make it possible to disable the block layer [try #6]
2006-09-30 20:52:31 +02:00
read_write.c
[PATCH] one more EXPORT_UNUSED_SYMBOL removal
2006-12-13 09:05:53 -08:00
read_write.h
[PATCH] Remove readv/writev methods and use aio_read/aio_write instead
2006-10-01 00:39:28 -07:00
readdir.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
select.c
[PATCH] fdtable: Make fdarray and fdsets equal in size
2006-12-10 09:57:22 -08:00
seq_file.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
splice.c
[PATCH] constify pipe_buf_operations
2006-12-13 09:05:47 -08:00
stack.c
[PATCH] fsstack: Remove inode copy
2006-12-22 08:55:48 -08:00
stat.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
super.c
[PATCH] Revert bd_mount_mutex back to a semaphore
2007-01-11 18:18:21 -08:00
sync.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
utimes.c
[PATCH] severing fs.h, radix-tree.h -> sched.h
2006-12-04 02:00:24 -05:00
xattr_acl.c
…
xattr.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00