ceph: voluntarily drop Fx cap for readdir request
MDS need to rdlock directory inode's filelock when handling readdir
request. Voluntarily dropping CEPH_CAP_AUTH_EXCL avoids a cap revoke
message.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index aa2618f..9fde02c 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -381,6 +381,7 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx)
if (op == CEPH_MDS_OP_READDIR) {
req->r_direct_hash = ceph_frag_value(frag);
__set_bit(CEPH_MDS_R_DIRECT_IS_HASH, &req->r_req_flags);
+ req->r_inode_drop = CEPH_CAP_FILE_EXCL;
}
if (fi->last_name) {
req->r_path2 = kstrdup(fi->last_name, GFP_KERNEL);