diff options
| author | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 17:49:35 +1100 |
|---|---|---|
| committer | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 17:50:22 +1100 |
| commit | b23fb0a60379a95e10c671f646b259ea2558421e (patch) | |
| tree | 7c3644b91241d32fda502a7be0b78e4c225f8091 /fs/cifs | |
| parent | 2fd6b7f50797f2e993eea59e0a0b8c6399c811dc (diff) | |
fs: scale inode alias list
Add a new lock, dcache_inode_lock, to protect the inode's i_dentry list
from concurrent modification. d_alias is also protected by d_lock.
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/inode.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 589f3e3f6e0..003698365ec 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -810,12 +810,15 @@ inode_has_hashed_dentries(struct inode *inode) struct dentry *dentry; spin_lock(&dcache_lock); + spin_lock(&dcache_inode_lock); list_for_each_entry(dentry, &inode->i_dentry, d_alias) { if (!d_unhashed(dentry) || IS_ROOT(dentry)) { + spin_unlock(&dcache_inode_lock); spin_unlock(&dcache_lock); return true; } } + spin_unlock(&dcache_inode_lock); spin_unlock(&dcache_lock); return false; } |