mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-29 23:53:32 +00:00
Code Issues Releases Wiki Activity

ceph: register MDS request with dir inode from the start

Browse source 
When the unsafe reply to a request comes in, the request is put on the
r_unsafe_dir inode's list. In future patches, we're going to need to
wait on requests that may not have gotten an unsafe reply yet.

Change __register_request to put the entry on the dir inode's list when
the pointer is set in the request, and don't check the
CEPH_MDS_R_GOT_UNSAFE flag when unregistering it.

The only place that uses this list today is fsync codepath, and with
the coming changes, we'll want to wait on all operations whether it has
gotten an unsafe reply or not.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Jeff Layton 2019-04-04 08:05:38 -04:00 committed by Ilya Dryomov
parent 7111951b8d
commit 3db0a2fc56
1 changed files with 6 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
fs/ceph/mds_client.c
View file

@ -793,8 +793,13 @@ static void __register_request(struct ceph_mds_client *mdsc,
mdsc->oldest_tid = req->r_tid;
if (dir) {
struct ceph_inode_info *ci = ceph_inode(dir);
ihold(dir);
req->r_unsafe_dir = dir;
spin_lock(&ci->i_unsafe_lock);
list_add_tail(&req->r_unsafe_dir_item, &ci->i_unsafe_dirops);
spin_unlock(&ci->i_unsafe_lock);
}
}
@ -822,8 +827,7 @@ static void __unregister_request(struct ceph_mds_client *mdsc,
erase_request(&mdsc->request_tree, req);
if (req->r_unsafe_dir &&
test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags)) {
if (req->r_unsafe_dir) {
struct ceph_inode_info *ci = ceph_inode(req->r_unsafe_dir);
spin_lock(&ci->i_unsafe_lock);
list_del_init(&req->r_unsafe_dir_item);
@ -2935,14 +2939,6 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
} else {
set_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags);
list_add_tail(&req->r_unsafe_item, &req->r_session->s_unsafe);
if (req->r_unsafe_dir) {
struct ceph_inode_info *ci =
ceph_inode(req->r_unsafe_dir);
spin_lock(&ci->i_unsafe_lock);
list_add_tail(&req->r_unsafe_dir_item,
&ci->i_unsafe_dirops);
spin_unlock(&ci->i_unsafe_lock);
}
}
dout("handle_reply tid %lld result %d\n", tid, result);