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authorSage Weil <sage@newdream.net>2011-07-26 18:31:08 (GMT)
committerSage Weil <sage@newdream.net>2011-07-26 18:31:08 (GMT)
commit4f1772645296a230e04f5c53e79cfb6f841ce634 (patch)
treeb46dab3e88acef56a074c5d519a851dec5c1ade1
parente5f86dc377e7ff2b4195831153a85a3e76fefff2 (diff)
ceph: document locking for ceph_set_dentry_offset
Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
-rw-r--r--fs/ceph/inode.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index a7db56f..5f0013a 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -843,11 +843,13 @@ out_unlock:
/*
* Set dentry's directory position based on the current dir's max, and
* order it in d_subdirs, so that dcache_readdir behaves.
+ *
+ * Always called under directory's i_mutex.
*/
static void ceph_set_dentry_offset(struct dentry *dn)
{
struct dentry *dir = dn->d_parent;
- struct inode *inode = dn->d_parent->d_inode;
+ struct inode *inode = dir->d_inode;
struct ceph_dentry_info *di;
BUG_ON(!inode);

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