ceph: use atomic_t for ceph_inode_info::i_shared_gen

It allows accessing i_shared_gen without holding i_ceph_lock. It is
preparation for later patch.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 029cab713731..57120e3d44de 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -498,7 +498,7 @@ static void __check_cap_issue(struct ceph_inode_info *ci, struct ceph_cap *cap,
          */
         if ((issued & CEPH_CAP_FILE_SHARED) != (had & CEPH_CAP_FILE_SHARED)) {
                 if (issued & CEPH_CAP_FILE_SHARED)
-                        ci->i_shared_gen++;
+                        atomic_inc(&ci->i_shared_gen);
                 if (S_ISDIR(ci->vfs_inode.i_mode)) {
                         dout(" marking %p NOT complete\n", &ci->vfs_inode);
                         __ceph_dir_clear_complete(ci);