AcoSail/kernel_optimize_test
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3942ae5319
kernel_optimize_test/fs
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Steven Whitehouse 3942ae5319 GFS2: Fix race during filesystem mount 
There is a potential race during filesystem mounting which has recently
been reported. It occurs when the userland gfs_controld is able to
process requests fast enough that it tries to use the sysfs interface
before the lock module is properly initialised. This is a pretty
unusual case as normally the lock module initialisation is very quick
compared with gfs_controld.

This patch adds an interruptible completion which is used to ensure that
userland will wait for the initialisation of the lock module to
complete.

There are other potential solutions to this problem, but this is the
quickest at this stage and has been tested both with and without
mount.gfs2 present in the system.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Reported-by: David Booher <dbooher@adams.net>
2011-07-12 09:15:46 +01:00
..
9p 9p: remove unnecessary dentry_unhash on rmdir, dir rename 2011-05-28 01:02:53 -04:00
adfs
affs affs: remove unnecessary dentry_unhash on rmdir, dir rename 2011-05-28 01:02:53 -04:00
afs AFS: Use i_generation not i_version for the vnode uniquifier 2011-06-16 11:44:48 -04:00
autofs4 autofs4: bogus dentry_unhash() added in ->unlink() 2011-05-30 01:50:53 -04:00
befs
bfs bfs: remove unnecessary dentry_unhash on dir rename 2011-05-28 01:02:50 -04:00
btrfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable 2011-07-08 23:25:45 -07:00
cachefiles
ceph ceph: fix sync and dio writes across stripe boundaries 2011-06-13 16:26:22 -07:00
cifs Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6 2011-07-11 12:48:24 -07:00
coda coda_ioctl_permission() is safe in RCU mode 2011-06-20 10:44:19 -04:00
configfs configfs: remove unnecessary dentry_unhash on rmdir, dir rename 2011-05-28 01:02:54 -04:00
cramfs
debugfs
devpts
dlm Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2011-05-26 13:19:00 -07:00
ecryptfs eCryptfs: Remove ecryptfs_header_cache_2 2011-05-29 14:24:25 -05:00
efs
exofs exofs: remove unnecessary dentry_unhash on rmdir/rename_dir 2011-05-26 07:26:57 -04:00
exportfs
ext2 ext2: remove unnecessary dentry_unhash on rmdir/rename_dir 2011-05-26 07:26:56 -04:00
ext3 fs: pass exact type of data dirties to ->dirty_inode 2011-05-27 07:04:40 -04:00
ext4 ext4: fixed tracepoints cleanup 2011-06-06 09:51:52 -04:00
fat fat: Fix corrupt inode flags when remove ATTR_SYS flag 2011-05-31 19:42:24 +09:00
freevxfs
fscache FS-Cache: Add a helper to bulk uncache pages on an inode 2011-07-07 13:21:56 -07:00
fuse more conservative S_NOSEC handling 2011-06-03 18:24:58 -04:00
gfs2 GFS2: Fix race during filesystem mount 2011-07-12 09:15:46 +01:00
hfs hfs: remove unnecessary dentry_unhash on rmdir, dir rename 2011-05-28 01:02:52 -04:00
hfsplus hfsplus: Fix double iput of the same inode in hfsplus_fill_super() 2011-06-30 13:38:39 +02:00
hostfs hostfs: remove unnecessary dentry_unhash on rmdir, dir rename 2011-05-28 01:02:52 -04:00
hpfs hpfs: remove unnecessary dentry_unhash on rmdir, dir rename 2011-05-28 01:02:54 -04:00
hppfs
hugetlbfs mm: don't access vm_flags as 'int' 2011-05-26 09:20:31 -07:00
isofs isofs: fix bh leak in isofs_fill_super() error case 2011-06-18 07:25:42 -07:00
jbd
jbd2 jbd2: Fix oops in jbd2_journal_remove_journal_head() 2011-06-13 15:38:22 -04:00
jffs2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-05-28 13:03:41 -07:00
jfs jfs: agstart field must be 64 bits 2011-06-20 17:53:24 -05:00
lockd NLM: Don't hang forever on NLM unlock requests 2011-06-15 11:24:27 -04:00
logfs logfs doesn't need ->permission() at all 2011-06-20 10:44:26 -04:00
minix minix: remove unnecessary dentry_unhash on rmdir, dir rename 2011-05-28 01:02:54 -04:00
ncpfs ncpfs: fix rename over directory with dangling references 2011-05-28 01:02:53 -04:00
nfs FS-Cache: Add a helper to bulk uncache pages on an inode 2011-07-07 13:21:56 -07:00
nfs_common
nfsd nfsd4: fix break_lease flags on nfsd open 2011-06-20 10:38:01 -04:00
nilfs2 nilfs2_permission() doesn't need to bail out in RCU mode 2011-06-20 10:44:33 -04:00
nls
notify
ntfs
ocfs2 more conservative S_NOSEC handling 2011-06-03 18:24:58 -04:00
omfs Remove unneeded version.h includes from fs/ 2011-06-24 08:34:22 -07:00
openpromfs
partitions Revert "block: Remove extra discard_alignment from hd_struct." 2011-05-30 07:42:51 +02:00
proc proc: restrict access to /proc/PID/io 2011-06-28 09:39:11 -07:00
pstore
qnx4
quota
ramfs
reiserfs reiserfs_permission() doesn't need to bail out in RCU mode 2011-06-20 10:45:21 -04:00
romfs romfs: fix romfs_get_unmapped_area() argument check 2011-06-27 18:00:12 -07:00
squashfs Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus 2011-05-29 11:19:45 -07:00
sysfs Delay struct net freeing while there's a sysfs instance refering to it 2011-06-12 17:45:41 -04:00
sysv sysv: remove unnecessary dentry_unhash from rmdir, dir rename 2011-05-28 01:02:50 -04:00
ubifs ubifs: dereferencing an ERR_PTR in ubifs_mount() 2011-06-20 10:42:34 -04:00
udf udf: remove unnecessary dentry_unhash from rmdir, dir rename 2011-05-28 01:02:52 -04:00
ufs ufs: remove unnecessary dentry_unhash from rmdir, dir rename 2011-05-28 01:02:51 -04:00
xfs xfs: unpin stale inodes directly in IOP_COMMITTED 2011-07-06 15:44:40 -05:00
aio.c
anon_inodes.c
attr.c Cache xattr security drop check for write v2 2011-05-28 12:02:09 -04:00
bad_inode.c bad_inode_permission() is safe from RCU mode 2011-06-20 10:44:00 -04:00
binfmt_aout.c
binfmt_elf_fdpic.c FDPIC: Fix memory leak 2011-07-06 12:15:16 -07:00
binfmt_elf.c
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
binfmt_som.c
bio-integrity.c
bio.c block: improve the bio_add_page() and bio_add_pc_page() descriptions 2011-05-28 14:44:46 +02:00
block_dev.c block: use the passed in @bdev when claiming if partno is zero 2011-06-13 12:45:48 +02:00
buffer.c vfs: Fix data corruption after failed write in __block_write_begin() 2011-06-16 11:44:46 -04:00
char_dev.c
compat_binfmt_elf.c
compat_ioctl.c
compat.c
dcache.c
dcookies.c oprofile, dcookies: Fix possible circular locking dependency 2011-05-31 16:33:35 +02:00
direct-io.c
drop_caches.c
eventfd.c
eventpoll.c
exec.c KEYS/DNS: Fix ____call_usermodehelper() to not lose the session keyring 2011-06-17 09:40:48 -07:00
fcntl.c
fhandle.c
fifo.c
file_table.c
file.c
filesystems.c
fs_struct.c
fs-writeback.c fs: pass exact type of data dirties to ->dirty_inode 2011-05-27 07:04:40 -04:00
generic_acl.c
inode.c mm: fix assertion mapping->nrpages == 0 in end_writeback() 2011-06-27 18:00:13 -07:00
internal.h
ioctl.c
ioprio.c
Kconfig Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-05-26 09:52:14 -07:00
Kconfig.binfmt
libfs.c libfs: drop unneeded dentry_unhash 2011-05-26 07:26:50 -04:00
locks.c fs: fix lock initialization 2011-07-06 10:41:13 -07:00
Makefile
mbcache.c
mpage.c mm/fs: add hooks to support cleancache 2011-05-26 10:01:43 -06:00
namei.c fix comment in generic_permission() 2011-06-20 10:45:56 -04:00
namespace.c fs/namespace.c: bound mount propagation fix 2011-05-26 07:26:44 -04:00
nfsctl.c
no-block.c
open.c
pipe.c
pnode.c
pnode.h
posix_acl.c
read_write.c
read_write.h
readdir.c
select.c
seq_file.c
signalfd.c
splice.c
stack.c
stat.c
statfs.c
super.c more conservative S_NOSEC handling 2011-06-03 18:24:58 -04:00
sync.c
timerfd.c timerfd: Fix wakeup of processes when timer is cancelled on clock change 2011-06-14 11:46:14 +02:00
utimes.c
xattr_acl.c
xattr.c Cache xattr security drop check for write v2 2011-05-28 12:02:09 -04:00