From: Xiubo Li <xiubli@xxxxxxxxxx> For example, if dentry and inode is NULL, the log will be: ceph: lookup result=000000007a1ca695 ceph: submit_request on 0000000041d5070e for inode 000000007a1ca695 The will be confusing without checking the corresponding code carefully. Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx> --- fs/ceph/dir.c | 2 +- fs/ceph/mds_client.c | 6 +++++- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index ffeaff5bf211..245a262ec198 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -798,7 +798,7 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry, err = ceph_handle_snapdir(req, dentry, err); dentry = ceph_finish_lookup(req, dentry, err); ceph_mdsc_put_request(req); /* will dput(dentry) */ - dout("lookup result=%p\n", dentry); + dout("lookup result=%d\n", err); return dentry; } diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index b6aa357f7c61..e34f159d262b 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -2772,7 +2772,11 @@ int ceph_mdsc_submit_request(struct ceph_mds_client *mdsc, struct inode *dir, ceph_get_cap_refs(ceph_inode(req->r_old_dentry_dir), CEPH_CAP_PIN); - dout("submit_request on %p for inode %p\n", req, dir); + if (dir) + dout("submit_request on %p for inode %p\n", req, dir); + else + dout("submit_request on %p\n", req); + mutex_lock(&mdsc->mutex); __register_request(mdsc, req, dir); __do_request(mdsc, req); -- 2.21.0