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| author | Li Zefan <lizf@cn.fujitsu.com> | 2011-12-07 04:38:24 +0100 |
|---|---|---|
| committer | Li Zefan <lizf@cn.fujitsu.com> | 2012-01-11 03:26:54 +0100 |
| commit | b367e47fb3a70f5d24ebd6faf7d42436d485fb2d (patch) | |
| tree | 5acc05bae14070f2dad3433a1482fe3a7bab0744 /fs/squashfs/super.c | |
| parent | Btrfs: update global block_rsv when creating a new block group (diff) | |
| download | linux-b367e47fb3a70f5d24ebd6faf7d42436d485fb2d.tar.xz linux-b367e47fb3a70f5d24ebd6faf7d42436d485fb2d.zip | |
Btrfs: fix possible deadlock when opening a seed device
The correct lock order is uuid_mutex -> volume_mutex -> chunk_mutex,
but when we mount a filesystem which has backing seed devices, we have
this lock chain:
open_ctree()
lock(chunk_mutex);
read_chunk_tree();
read_one_dev();
open_seed_devices();
lock(uuid_mutex);
and then we hit a lockdep splat.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Diffstat (limited to 'fs/squashfs/super.c')
0 files changed, 0 insertions, 0 deletions