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Artem Bityutskiy c88ac00c5a UBIFS: fix assertion warnings 
This patch fixes UBIFS assertion warnings like:

UBIFS assert failed in ubifs_leb_unmap at 135 (pid 29365)
Pid: 29365, comm: integck Tainted: G          I 2.6.37-ubi-2.6+ #34
Call Trace:
 [<ffffffffa047c663>] ubifs_lpt_init+0x95e/0x9ee [ubifs]
 [<ffffffffa04623a7>] ubifs_remount_fs+0x2c7/0x762 [ubifs]
 [<ffffffff810f066e>] do_remount_sb+0xb6/0x101
 [<ffffffff81106ff4>] ? do_mount+0x191/0x78e
 [<ffffffff811070bb>] do_mount+0x258/0x78e
 [<ffffffff810da1e8>] ? alloc_pages_current+0xa2/0xc5
 [<ffffffff81107674>] sys_mount+0x83/0xbd
 [<ffffffff81009a12>] system_call_fastpath+0x16/0x1b

They happen when we re-mount from R/O mode to R/W mode. While
re-mounting, we write to the media, but we still have the c->ro_mount
flag set. The fix is very simple - just clear the flag before
starting re-mounting R/W.

These warnings are caused by the following commit:
2ef13294d2

For -stable guys: this bug was introduced in 2.6.38, this is materieal
for 2.6.38-stable.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Cc: stable@kernel.org [2.6.38]
2011-04-05 10:45:09 +03:00
..
9p userns: rename is_owner_or_cap to inode_owner_or_capable 2011-03-23 19:47:13 -07:00
adfs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
affs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
afs afs: Fix oops in afs_unlink_writeback 2011-02-25 11:12:37 -08:00
autofs4 autofs4: Do not potentially dereference NULL pointer returned by fget() in autofs_dev_ioctl_setpipefd() 2011-03-24 14:54:35 -04:00
befs block: remove per-queue plugging 2011-03-10 08:52:07 +01:00
bfs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
btrfs Merge branch 'for-linus-unmerged' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable 2011-03-28 15:31:05 -07:00
cachefiles CacheFiles: Add calls to path-based security hooks 2011-01-24 10:49:45 +11:00
ceph fs: don't use igrab() while holding i_lock 2011-03-29 07:50:34 -07:00
cifs block: remove per-queue plugging 2011-03-10 08:52:07 +01:00
coda codafs: fix build break when CONFIG_PROC_SYSCTL=n 2011-03-25 17:45:16 -07:00
configfs configfs: change depends -> select SYSFS 2011-01-16 21:22:29 +00:00
cramfs cramfs: generate unique inode number for better inode cache usage 2011-01-13 08:03:23 -08:00
debugfs debugfs: Fix filesystem reference counting on debugfs_remove() failure 2011-02-18 08:07:18 -08:00
devpts fs/devpts/inode.c: correctly check d_alloc_name() return code in devpts_pty_new() 2011-03-22 17:44:17 -07:00
dlm dlm: use alloc_workqueue function 2011-03-10 13:22:34 -06:00
ecryptfs eCryptfs: write lock requested keys 2011-03-28 01:49:43 -05:00
efs block: remove per-queue plugging 2011-03-10 08:52:07 +01:00
exofs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
exportfs vfs: Add open by file handle support 2011-03-15 02:21:44 -04:00
ext2 Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
ext3 Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
ext4 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 2011-03-25 09:57:41 -07:00
fat Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
freevxfs block: remove per-queue plugging 2011-03-10 08:52:07 +01:00
fscache FS-Cache: Fix operation handling 2011-01-14 09:23:36 -08:00
fuse Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
gfs2 Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
hfs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
hfsplus Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
hostfs
hpfs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
hppfs
hugetlbfs mm: hugetlbfs: change remove_from_page_cache 2011-03-22 17:44:02 -07:00
isofs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
jbd Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
jbd2 Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
jffs2 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-linus-1 2011-03-25 17:41:20 +02:00
jfs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
lockd NLM: Fix "kernel BUG at fs/lockd/host.c:417!" or ".../host.c:283!" 2011-01-25 15:24:47 -05:00
logfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-03-24 19:01:30 -07:00
minix Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
ncpfs fs: change to new flag variable 2011-03-17 14:02:57 +01:00
nfs fs: don't use igrab() while holding i_lock 2011-03-29 07:50:34 -07:00
nfs_common Remove pointless memset in nfsacl_encode() 2011-03-22 20:03:52 -04:00
nfsd Merge branch 'for-2.6.39' of git://linux-nfs.org/~bfields/linux 2011-03-24 08:20:39 -07:00
nilfs2 Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
nls
notify fs: rename inode_lock to inode_hash_lock 2011-03-24 21:17:51 -04:00
ntfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-03-24 19:01:30 -07:00
ocfs2 Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2 2011-03-28 13:03:31 -07:00
omfs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
openpromfs
partitions Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
proc proc: fix oops on invalid /proc/<pid>/maps access 2011-03-27 19:09:29 -07:00
pstore pstore: cleanups to pstore_dump() 2011-03-22 16:01:49 -07:00
qnx4 block: remove per-queue plugging 2011-03-10 08:52:07 +01:00
quota fs: move i_sb_list out from under inode_lock 2011-03-24 21:16:32 -04:00
ramfs
reiserfs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
romfs
squashfs Squashfs: Use vmalloc rather than kmalloc for zlib workspace 2011-03-22 23:01:26 +00:00
sysfs kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT 2011-01-20 17:02:05 -08:00
sysv Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
ubifs UBIFS: fix assertion warnings 2011-04-05 10:45:09 +03:00
udf Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
ufs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
xfs Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs 2011-03-28 15:51:02 -07:00
aio.c Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
anon_inodes.c sanitize vfsmount refcounting changes 2011-01-16 13:47:07 -05:00
attr.c userns: rename is_owner_or_cap to inode_owner_or_capable 2011-03-23 19:47:13 -07:00
bad_inode.c
binfmt_aout.c
binfmt_elf.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-03-23 20:51:42 -07:00
binfmt_elf_fdpic.c
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
binfmt_som.c
bio-integrity.c block: Require subsystems to explicitly allocate bio_set integrity mempool 2011-03-17 11:11:05 +01:00
bio.c Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
block_dev.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-03-24 19:01:30 -07:00
buffer.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-03-24 19:01:30 -07:00
char_dev.c Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
compat.c select: remove unused MAX_SELECT_SECONDS 2011-03-21 00:16:08 -04:00
compat_binfmt_elf.c
compat_ioctl.c
dcache.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-03-18 10:51:11 -07:00
dcookies.c
direct-io.c Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
drop_caches.c fs: move i_sb_list out from under inode_lock 2011-03-24 21:16:32 -04:00
eventfd.c Docbook: add fs/eventfd.c and fix typos in it 2011-02-21 15:07:04 -08:00
eventpoll.c epoll: fix compiler warning and optimize the non-blocking path 2011-03-22 17:44:15 -07:00
exec.c Small typo fix... 2011-03-21 00:16:09 -04:00
fcntl.c userns: rename is_owner_or_cap to inode_owner_or_capable 2011-03-23 19:47:13 -07:00
fhandle.c vfs: Add open by file handle support 2011-03-15 02:21:44 -04:00
fifo.c Filesystem: fifo: Fixed coding style issue. 2011-03-21 00:16:09 -04:00
file.c
file_table.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-03-16 13:26:17 -07:00
filesystems.c
fs-writeback.c fs: pull inode->i_lock up out of writeback_single_inode 2011-03-24 21:17:51 -04:00
fs_struct.c sanitize vfsmount refcounting changes 2011-01-16 13:47:07 -05:00
generic_acl.c userns: rename is_owner_or_cap to inode_owner_or_capable 2011-03-23 19:47:13 -07:00
inode.c fs: fix inode.c kernel-doc warning 2011-03-27 19:30:19 -07:00
internal.h fs: move i_wb_list out from under inode_lock 2011-03-24 21:17:51 -04:00
ioctl.c vfs: cleanup do_vfs_ioctl() 2011-03-21 00:16:08 -04:00
ioprio.c
Kconfig Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2011-03-16 19:01:29 -07:00
Kconfig.binfmt
libfs.c
locks.c Merge branch 'for-2.6.39' of git://linux-nfs.org/~bfields/linux 2011-03-24 08:20:39 -07:00
Makefile Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2011-03-16 19:01:29 -07:00
mbcache.c
mpage.c fs: make mpage read/write_pages() plug 2011-03-10 08:52:26 +01:00
namei.c vfs - check non-mountpoint dentry might block in __follow_mount_rcu() 2011-03-24 14:24:32 -04:00
namespace.c fs: use appropriate printk priority levels 2011-03-22 17:44:10 -07:00
nfsctl.c open-style analog of vfs_path_lookup() 2011-03-14 09:15:28 -04:00
no-block.c
open.c fs: Use BUG_ON(!mnt) at dentry_open(). 2011-03-21 01:10:41 -04:00
pipe.c Fix broken "pipe: use event aware wakeups" optimization 2011-01-20 16:21:59 -08:00
pnode.c
pnode.h
posix_acl.c NFS: Prevent memory allocation failure in nfsacl_encode() 2011-01-25 15:24:47 -05:00
read_write.c
read_write.h
readdir.c
select.c select: remove unused MAX_SELECT_SECONDS 2011-03-21 00:16:08 -04:00
seq_file.c
signalfd.c
splice.c Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
stack.c
stat.c readlinkat(), fchownat() and fstatat() with empty relative pathnames 2011-03-15 02:21:45 -04:00
statfs.c clean statfs-like syscalls up 2011-03-14 09:15:28 -04:00
super.c Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
sync.c Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
timerfd.c
utimes.c userns: rename is_owner_or_cap to inode_owner_or_capable 2011-03-23 19:47:13 -07:00
xattr.c userns: rename is_owner_or_cap to inode_owner_or_capable 2011-03-23 19:47:13 -07:00
xattr_acl.c