From 4c06ace81a60636dec358c288ef6aaf3aa6dc599 Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Tue, 27 Oct 2015 17:18:00 +0800 Subject: [PATCH] ceph: add request to i_unsafe_dirops when getting unsafe reply Previously we add request to i_unsafe_dirops when registering request. So ceph_fsync() also waits for imcomplete requests. This is unnecessary, ceph_fsync() only needs to wait unsafe requests. Signed-off-by: Yan, Zheng --- fs/ceph/mds_client.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index a7a967abb49e..1e47a3d1d12f 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -633,13 +633,8 @@ 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); - spin_lock(&ci->i_unsafe_lock); req->r_unsafe_dir = dir; - list_add_tail(&req->r_unsafe_dir_item, &ci->i_unsafe_dirops); - spin_unlock(&ci->i_unsafe_lock); } } @@ -665,13 +660,14 @@ static void __unregister_request(struct ceph_mds_client *mdsc, rb_erase(&req->r_node, &mdsc->request_tree); RB_CLEAR_NODE(&req->r_node); - if (req->r_unsafe_dir) { + if (req->r_unsafe_dir && req->r_got_unsafe) { 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); spin_unlock(&ci->i_unsafe_lock); + } + if (req->r_unsafe_dir) { iput(req->r_unsafe_dir); req->r_unsafe_dir = NULL; } @@ -2484,6 +2480,14 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg) } else { req->r_got_unsafe = true; 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); -- 2.39.5