diff options
Diffstat (limited to 'fs/notify/mark.c')
| -rw-r--r-- | fs/notify/mark.c | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/fs/notify/mark.c b/fs/notify/mark.c index 959bc73aaae7..05506d60131c 100644 --- a/fs/notify/mark.c +++ b/fs/notify/mark.c @@ -109,6 +109,23 @@ void fsnotify_get_mark(struct fsnotify_mark *mark) refcount_inc(&mark->refcnt); } +static __u32 *fsnotify_conn_mask_p(struct fsnotify_mark_connector *conn) +{ + if (conn->type == FSNOTIFY_OBJ_TYPE_INODE) + return &fsnotify_conn_inode(conn)->i_fsnotify_mask; + else if (conn->type == FSNOTIFY_OBJ_TYPE_VFSMOUNT) + return &fsnotify_conn_mount(conn)->mnt_fsnotify_mask; + return NULL; +} + +__u32 fsnotify_conn_mask(struct fsnotify_mark_connector *conn) +{ + if (WARN_ON(!fsnotify_valid_obj_type(conn->type))) + return 0; + + return *fsnotify_conn_mask_p(conn); +} + static void __fsnotify_recalc_mask(struct fsnotify_mark_connector *conn) { u32 new_mask = 0; @@ -119,10 +136,10 @@ static void __fsnotify_recalc_mask(struct fsnotify_mark_connector *conn) if (mark->flags & FSNOTIFY_MARK_FLAG_ATTACHED) new_mask |= mark->mask; } - if (conn->type == FSNOTIFY_OBJ_TYPE_INODE) - fsnotify_conn_inode(conn)->i_fsnotify_mask = new_mask; - else if (conn->type == FSNOTIFY_OBJ_TYPE_VFSMOUNT) - fsnotify_conn_mount(conn)->mnt_fsnotify_mask = new_mask; + if (WARN_ON(!fsnotify_valid_obj_type(conn->type))) + return; + + *fsnotify_conn_mask_p(conn) = new_mask; } /* |