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[21/23] ceph: document locking for ceph_set_dentry_offset

Message ID 1311379382-9218-22-git-send-email-sage@newdream.net (mailing list archive)
State New, archived
Headers show

Commit Message

Sage Weil July 23, 2011, 12:03 a.m. UTC 
Signed-off-by: Sage Weil <sage@newdream.net>
---
 fs/ceph/inode.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
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Patch

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);