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ceph: send LSSNAP request to auth mds of directory inode

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Snapdir inode has no capability. __choose_mds() should choose mds
base on capabilities of snapdir's parent inode.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Yan, Zheng
2017-07-26 12:48:08 +08:00
committed by Ilya Dryomov
parent 8d45b911a9
commit 5d37ca1480
2 changed files with 14 additions and 5 deletions
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13
fs/ceph/mds_client.c
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@@ -731,9 +731,16 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
inode = NULL;
if (req->r_inode) {
inode = req->r_inode;
ihold(inode);
} else if (req->r_dentry) {
if (ceph_snap(req->r_inode) != CEPH_SNAPDIR) {
inode = req->r_inode;
ihold(inode);
} else {
/* req->r_dentry is non-null for LSSNAP request.
* fall-thru */
WARN_ON_ONCE(!req->r_dentry);
}
}
if (!inode && req->r_dentry) {
/* ignore race with rename; old or new d_parent is okay */
struct dentry *parent;
struct inode *dir;