diff options
| author |   Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-03-27 02:51:39 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-04-13 09:53:49 +0900 |
| commit | bcb48891b05b4179edc86298d3dccb2ce90d5413 (patch) | |
| tree | c7cd9e37ca46e4f7241be2faa5f5c6e7625d7520 /kernel/mutex.c | |
| parent | nilfs2: return f_fsid for statfs2 (diff) | |
| download | linux-dev-bcb48891b05b4179edc86298d3dccb2ce90d5413.tar.xz linux-dev-bcb48891b05b4179edc86298d3dccb2ce90d5413.zip | |
nilfs2: fix lockdep recursive locking warning on bmap
The bmap semaphore of DAT file can be held while a bmap of other files
is locked. This has caused the following false detection of lockdep
check:
mount.nilfs2/4667 is trying to acquire lock:
(&bmap->b_sem){..--}, at: [<d0c6c4b4>] nilfs_bmap_lookup_at_level+0x1a/0x74 [nilfs2]
but task is already holding lock:
(&bmap->b_sem){..--}, at: [<d0c6c4b4>] nilfs_bmap_lookup_at_level+0x1a/0x74 [nilfs2]
This will fix the false detection by distinguishing semaphores of the
DAT and other files.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'kernel/mutex.c')
0 files changed, 0 insertions, 0 deletions