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ceph: remember subtree root dirfrag's auth MDS

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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>
This commit is contained in:
Yan, Zheng 2014-04-18 22:01:38 +08:00
parent 3e7fbe9ceb
commit 8d08503c13
1 changed files with 7 additions and 1 deletions
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8
fs/ceph/inode.c
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@ -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)