From: Yan, Zheng <zheng.z.yan@intel.com>
Date: Fri, 18 Apr 2014 14:01:38 +0000 (+0800)
Subject: ceph: remember subtree root dirfrag's auth MDS
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8d08503c130e96e3794f66fe47053051460b1584;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

ceph: remember subtree root dirfrag's auth MDS

remember dirfrag's auth MDS when it's different from its parent inode's
auth MDS.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
---

diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 850b26d2e601..8b3da8adbbe3 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -245,11 +245,17 @@ static int ceph_fill_dirfrag(struct inode *inode,
 	u32 id = le32_to_cpu(dirinfo->frag);
 	int mds = le32_to_cpu(dirinfo->auth);
 	int ndist = le32_to_cpu(dirinfo->ndist);
+	int diri_auth = -1;
 	int i;
 	int err = 0;
 
+	spin_lock(&ci->i_ceph_lock);
+	if (ci->i_auth_cap)
+		diri_auth = ci->i_auth_cap->mds;
+	spin_unlock(&ci->i_ceph_lock);
+
 	mutex_lock(&ci->i_fragtree_mutex);
-	if (ndist == 0) {
+	if (ndist == 0 && mds == diri_auth) {
 		/* no delegation info needed. */
 		frag = __ceph_find_frag(ci, id);
 		if (!frag)