d_lookup()/d_alloc() require parent inode locked. Parent inode is
not locked if request is aborted.
Signed-off-by: "Yan, Zheng" <zyan@xxxxxxxxxx>
---
fs/ceph/inode.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index a58e82a64545..b41dc0ed3a35 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -1203,7 +1203,9 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req)
WARN_ON_ONCE(1);
}
- if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME) {
+ if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME &&
+ test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) &&
+ !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) {
struct qstr dname;
struct dentry *dn, *parent;
--
2.17.1
