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>
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@ -245,11 +245,17 @@ static int ceph_fill_dirfrag(struct inode *inode,
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u32 id = le32_to_cpu(dirinfo->frag);
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int mds = le32_to_cpu(dirinfo->auth);
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int ndist = le32_to_cpu(dirinfo->ndist);
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int diri_auth = -1;
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int i;
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int err = 0;
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spin_lock(&ci->i_ceph_lock);
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if (ci->i_auth_cap)
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diri_auth = ci->i_auth_cap->mds;
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spin_unlock(&ci->i_ceph_lock);
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mutex_lock(&ci->i_fragtree_mutex);
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if (ndist == 0) {
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if (ndist == 0 && mds == diri_auth) {
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/* no delegation info needed. */
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frag = __ceph_find_frag(ci, id);
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if (!frag)
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