Commit 6cd3bcad authored by Yan, Zheng's avatar Yan, Zheng Committed by Ilya Dryomov

ceph: move ceph_find_inode() outside the s_mutex

ceph_find_inode() may wait on freeing inode, using it inside the s_mutex
may cause deadlock. (the freeing inode is waiting for OSD read reply, but
dispatch thread is blocked by the s_mutex)
Signed-off-by: default avatarYan, Zheng <zyan@redhat.com>
Reviewed-by: default avatarSage Weil <sage@redhat.com>
parent 508b32d8
......@@ -3045,6 +3045,12 @@ void ceph_handle_caps(struct ceph_mds_session *session,
}
}
/* lookup ino */
inode = ceph_find_inode(sb, vino);
ci = ceph_inode(inode);
dout(" op %s ino %llx.%llx inode %p\n", ceph_cap_op_name(op), vino.ino,
vino.snap, inode);
mutex_lock(&session->s_mutex);
session->s_seq++;
dout(" mds%d seq %lld cap seq %u\n", session->s_mds, session->s_seq,
......@@ -3053,11 +3059,6 @@ void ceph_handle_caps(struct ceph_mds_session *session,
if (op == CEPH_CAP_OP_IMPORT)
ceph_add_cap_releases(mdsc, session);
/* lookup ino */
inode = ceph_find_inode(sb, vino);
ci = ceph_inode(inode);
dout(" op %s ino %llx.%llx inode %p\n", ceph_cap_op_name(op), vino.ino,
vino.snap, inode);
if (!inode) {
dout(" i don't have ino %llx\n", vino.ino);
......
......@@ -2944,14 +2944,15 @@ static void handle_lease(struct ceph_mds_client *mdsc,
if (dname.len != get_unaligned_le32(h+1))
goto bad;
mutex_lock(&session->s_mutex);
session->s_seq++;
/* lookup inode */
inode = ceph_find_inode(sb, vino);
dout("handle_lease %s, ino %llx %p %.*s\n",
ceph_lease_op_name(h->action), vino.ino, inode,
dname.len, dname.name);
mutex_lock(&session->s_mutex);
session->s_seq++;
if (inode == NULL) {
dout("handle_lease no inode %llx\n", vino.ino);
goto release;
......
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