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authorNick Piggin <npiggin@kernel.dk>2011-01-07 17:49:32 +1100
committerNick Piggin <npiggin@kernel.dk>2011-01-07 17:50:21 +1100
commitb7ab39f631f505edc2bbdb86620d5493f995c9da (patch)
tree62be97ebc7fc69ceb601f23312d335ebb8038ee7 /fs/configfs/inode.c
parent2304450783dfde7b0b94ae234edd0dbffa865073 (diff)
fs: dcache scale dentry refcount
Make d_count non-atomic and protect it with d_lock. This allows us to ensure a 0 refcount dentry remains 0 without dcache_lock. It is also fairly natural when we start protecting many other dentry members with d_lock. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/configfs/inode.c')
-rw-r--r--fs/configfs/inode.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c
index 253476d78ed..79b37765d8f 100644
--- a/fs/configfs/inode.c
+++ b/fs/configfs/inode.c
@@ -253,7 +253,7 @@ void configfs_drop_dentry(struct configfs_dirent * sd, struct dentry * parent)
spin_lock(&dcache_lock);
spin_lock(&dentry->d_lock);
if (!(d_unhashed(dentry) && dentry->d_inode)) {
- dget_locked(dentry);
+ dget_locked_dlock(dentry);
__d_drop(dentry);
spin_unlock(&dentry->d_lock);
spin_unlock(&dcache_lock);