diff options
| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-03-27 02:53:12 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-04-13 09:53:50 +0900 |
| commit | c2698e50e304cd29a7836f05452359a3306a405e (patch) | |
| tree | 5d376538eb2937a7481c1303152e3b450049a7df | |
| parent | bcb48891b05b4179edc86298d3dccb2ce90d5413 (diff) | |
| download | op-kernel-dev-c2698e50e304cd29a7836f05452359a3306a405e.zip op-kernel-dev-c2698e50e304cd29a7836f05452359a3306a405e.tar.gz | |
nilfs2: fix lockdep recursive locking warning on meta data files
This fixes the following false detection of lockdep against nilfs meta
data files:
=============================================
[ INFO: possible recursive locking detected ]
2.6.29 #26
---------------------------------------------
mount.nilfs2/4185 is trying to acquire lock:
(&mi->mi_sem){----}, at: [<d0c7925b>] nilfs_sufile_get_stat+0x1e/0x105 [nilfs2]
but task is already holding lock:
(&mi->mi_sem){----}, at: [<d0c72026>] nilfs_count_free_blocks+0x48/0x84 [nilfs2]
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
| -rw-r--r-- | fs/nilfs2/the_nilfs.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c index 33400cf..7f65b3b 100644 --- a/fs/nilfs2/the_nilfs.c +++ b/fs/nilfs2/the_nilfs.c @@ -115,6 +115,7 @@ void put_nilfs(struct the_nilfs *nilfs) static int nilfs_load_super_root(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi, sector_t sr_block) { + static struct lock_class_key dat_lock_key; struct buffer_head *bh_sr; struct nilfs_super_root *raw_sr; struct nilfs_super_block **sbp = nilfs->ns_sbp; @@ -163,6 +164,9 @@ static int nilfs_load_super_root(struct the_nilfs *nilfs, if (unlikely(err)) goto failed_sufile; + lockdep_set_class(&NILFS_MDT(nilfs->ns_dat)->mi_sem, &dat_lock_key); + lockdep_set_class(&NILFS_MDT(nilfs->ns_gc_dat)->mi_sem, &dat_lock_key); + nilfs_mdt_set_shadow(nilfs->ns_dat, nilfs->ns_gc_dat); nilfs_mdt_set_entry_size(nilfs->ns_cpfile, checkpoint_size, sizeof(struct nilfs_cpfile_header)); |
