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Sage Weil be655596b3 ceph: use i_ceph_lock instead of i_lock 
We have been using i_lock to protect all kinds of data structures in the
ceph_inode_info struct, including lists of inodes that we need to iterate
over while avoiding races with inode destruction.  That requires grabbing
a reference to the inode with the list lock protected, but igrab() now
takes i_lock to check the inode flags.

Changing the list lock ordering would be a painful process.

However, using a ceph-specific i_ceph_lock in the ceph inode instead of
i_lock is a simple mechanical change and avoids the ordering constraints
imposed by igrab().

Reported-by: Amon Ott <a.ott@m-privacy.de>
Signed-off-by: Sage Weil <sage@newdream.net>
2011-12-07 10:46:44 -08:00
..
9p filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
adfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
affs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
afs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
autofs4 filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
befs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
bfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
btrfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
cachefiles
ceph ceph: use i_ceph_lock instead of i_lock 2011-12-07 10:46:44 -08:00
cifs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
coda filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
configfs doc: fix broken references 2011-09-27 18:08:04 +02:00
cramfs
debugfs
devpts filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
dlm
ecryptfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
efs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
exofs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
exportfs
ext2 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/vfs-queue 2011-11-02 11:41:01 -07:00
ext3 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/vfs-queue 2011-11-02 11:41:01 -07:00
ext4 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/vfs-queue 2011-11-02 11:41:01 -07:00
fat filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
freevxfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
fscache
fuse filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
gfs2 filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
hfs Merge branch 'akpm' (Andrew's incoming - part two) 2011-11-02 16:07:27 -07:00
hfsplus filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
hostfs Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/vfs-queue 2011-11-02 11:41:01 -07:00
hpfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
hppfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
hugetlbfs filesystems: add missing nlink wrappers 2011-11-02 12:53:43 +01:00
isofs Merge branch 'akpm' (Andrew's incoming - part two) 2011-11-02 16:07:27 -07:00
jbd jbd/jbd2: validate sb->s_first in journal_get_superblock() 2011-11-01 19:04:59 -04:00
jbd2 jbd2: Unify log messages in jbd2 code 2011-11-01 19:09:18 -04:00
jffs2 filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
jfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
lockd
logfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
minix filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
ncpfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
nfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
nfs_common
nfsd nfsd4: typo logical vs bitwise negate in nfsd4_decode_share_access 2011-11-01 18:06:43 -04:00
nilfs2 filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
nls
notify
ntfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
ocfs2 filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
omfs
openpromfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
partitions treewide: use __printf not __attribute__((format(printf,...))) 2011-10-31 17:30:54 -07:00
proc Merge branch 'akpm' (Andrew's incoming - part two) 2011-11-02 16:07:27 -07:00
pstore pstore: make pstore write function return normal success/fail value 2011-10-12 09:17:24 -07:00
qnx4 filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
quota Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs 2011-11-02 10:05:22 -07:00
ramfs ramfs: remove module leftovers 2011-11-02 16:06:58 -07:00
reiserfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
romfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
squashfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
sysfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
sysv filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
ubifs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
udf Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/vfs-queue 2011-11-02 11:41:01 -07:00
ufs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
xfs filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
aio.c aio: allocate kiocbs in batches 2011-11-02 16:07:03 -07:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf.c binfmt_elf: fix PIE execution with randomization disabled 2011-11-02 16:06:58 -07:00
binfmt_elf_fdpic.c
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c filesystems: add missing nlink wrappers 2011-11-02 12:53:43 +01:00
binfmt_script.c
binfmt_som.c
bio-integrity.c
bio.c
block_dev.c
buffer.c fs/buffer.c: add device information for error output in __find_get_block_slow() 2011-10-31 17:30:49 -07:00
char_dev.c
compat.c Cross Memory Attach 2011-10-31 17:30:44 -07:00
compat_binfmt_elf.c
compat_ioctl.c
dcache.c vfs: add d_prune dentry operation 2011-11-02 12:53:43 +01:00
dcookies.c
direct-io.c direct-io: merge direct_io_walker into __blockdev_direct_IO 2011-10-28 14:58:58 +02:00
drop_caches.c
eventfd.c
eventpoll.c epoll: fix spurious lockdep warnings 2011-10-31 17:30:57 -07:00
exec.c oom: remove oom_disable_count 2011-10-31 17:30:45 -07:00
fcntl.c
fhandle.c
fifo.c
file.c
file_table.c
filesystems.c
fs-writeback.c
fs_struct.c
generic_acl.c
inode.c vfs: protect i_nlink 2011-11-02 12:53:43 +01:00
internal.h
ioctl.c
ioprio.c
Kconfig tmpfs: add "tmpfs" to the Kconfig prompt to make it obvious. 2011-10-31 17:30:45 -07:00
Kconfig.binfmt
libfs.c filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
locks.c Merge branch 'for-3.2' of git://linux-nfs.org/~bfields/linux 2011-10-25 15:42:01 +02:00
Makefile fs/Makefile: Stupid typo breakage of exofs inclusion 2011-10-27 08:36:51 +02:00
mbcache.c
mpage.c
namei.c readlinkat: ensure we return ENOENT for the empty pathname for normal lookups 2011-11-02 12:53:42 +01:00
namespace.c vfs: add "device" tag to /proc/self/mountstats 2011-10-28 13:55:08 +02:00
no-block.c
open.c leases: fix write-open/read-lease race 2011-10-28 14:59:00 +02:00
pipe.c fs/pipe.c: add ->statfs callback for pipefs 2011-10-31 17:30:51 -07:00
pnode.c
pnode.h
posix_acl.c vfs: pass all mask flags check_acl and posix_acl_permission 2011-10-28 14:58:54 +02:00
read_write.c Cross Memory Attach 2011-10-31 17:30:44 -07:00
read_write.h
readdir.c
select.c
seq_file.c
signalfd.c
splice.c
stack.c filesystems: add set_nlink() 2011-11-02 12:53:43 +01:00
stat.c readlinkat: ensure we return ENOENT for the empty pathname for normal lookups 2011-11-02 12:53:42 +01:00
statfs.c
super.c vfs: ignore error on forced remount 2011-11-02 12:53:42 +01:00
sync.c
timerfd.c
utimes.c
xattr.c
xattr_acl.c