ceph: check inode caps in ceph_d_revalidate

Some inodes in readdir reply may have no caps. Getattr mds request
for these inodes can return -ESTALE. The fix is consider dentry that
links to inode with no caps as invalid. Invalid dentry causes a
lookup request to send to the mds, the MDS will send caps back.

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

1 files changed, 8 insertions, 3 deletions

diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index b629e9d59a35..619616d585b0 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1041,14 +1041,19 @@ static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
                 valid = 1;
         } else if (dentry_lease_is_valid(dentry) ||
                    dir_lease_is_valid(dir, dentry)) {
-                valid = 1;
+                if (dentry->d_inode)
+                        valid = ceph_is_any_caps(dentry->d_inode);
+                else
+                        valid = 1;
         }
 
         dout("d_revalidate %p %s\n", dentry, valid ? "valid" : "invalid");
-        if (valid)
+        if (valid) {
                 ceph_dentry_lru_touch(dentry);
-        else
+        } else {
+                ceph_dir_clear_complete(dir);
                 d_drop(dentry);
+        }
         iput(dir);
         return valid;
 }