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authorJan Kara <jack@suse.cz>2017-02-01 03:23:48 -0500
committerJan Kara <jack@suse.cz>2017-04-10 11:37:35 -0400
commit0810b4f9f207910d90aee56d312d25f334796363 (patch)
tree80694c7bb741091b13e6f53e31e28db3f3dbe1d9 /fs/notify
parent755b5bc681eb46de7bfaec196f85e30efd95bd9f (diff)
fsnotify: Move fsnotify_destroy_marks()
Move fsnotify_destroy_marks() to be later in the fs/notify/mark.c. It will need some functions that are declared after its current declaration. No functional change. Reviewed-by: Miklos Szeredi <mszeredi@redhat.com> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/notify')
-rw-r--r--fs/notify/mark.c72
1 files changed, 36 insertions, 36 deletions
diff --git a/fs/notify/mark.c b/fs/notify/mark.c
index e8c2f829ce65..b3f83ed6e8be 100644
--- a/fs/notify/mark.c
+++ b/fs/notify/mark.c
@@ -224,42 +224,6 @@ void fsnotify_destroy_mark(struct fsnotify_mark *mark,
224 fsnotify_free_mark(mark); 224 fsnotify_free_mark(mark);
225} 225}
226 226
227void fsnotify_destroy_marks(struct fsnotify_mark_connector *conn,
228 spinlock_t *lock)
229{
230 struct fsnotify_mark *mark;
231
232 if (!conn)
233 return;
234
235 while (1) {
236 /*
237 * We have to be careful since we can race with e.g.
238 * fsnotify_clear_marks_by_group() and once we drop 'lock',
239 * mark can get removed from the obj_list and destroyed. But
240 * we are holding mark reference so mark cannot be freed and
241 * calling fsnotify_destroy_mark() more than once is fine.
242 */
243 spin_lock(lock);
244 if (hlist_empty(&conn->list)) {
245 spin_unlock(lock);
246 break;
247 }
248 mark = hlist_entry(conn->list.first, struct fsnotify_mark,
249 obj_list);
250 /*
251 * We don't update i_fsnotify_mask / mnt_fsnotify_mask here
252 * since inode / mount is going away anyway. So just remove
253 * mark from the list.
254 */
255 hlist_del_init_rcu(&mark->obj_list);
256 fsnotify_get_mark(mark);
257 spin_unlock(lock);
258 fsnotify_destroy_mark(mark, mark->group);
259 fsnotify_put_mark(mark);
260 }
261}
262
263void fsnotify_connector_free(struct fsnotify_mark_connector **connp) 227void fsnotify_connector_free(struct fsnotify_mark_connector **connp)
264{ 228{
265 if (*connp) { 229 if (*connp) {
@@ -580,6 +544,42 @@ void fsnotify_detach_group_marks(struct fsnotify_group *group)
580 } 544 }
581} 545}
582 546
547void fsnotify_destroy_marks(struct fsnotify_mark_connector *conn,
548 spinlock_t *lock)
549{
550 struct fsnotify_mark *mark;
551
552 if (!conn)
553 return;
554
555 while (1) {
556 /*
557 * We have to be careful since we can race with e.g.
558 * fsnotify_clear_marks_by_group() and once we drop 'lock',
559 * mark can get removed from the obj_list and destroyed. But
560 * we are holding mark reference so mark cannot be freed and
561 * calling fsnotify_destroy_mark() more than once is fine.
562 */
563 spin_lock(lock);
564 if (hlist_empty(&conn->list)) {
565 spin_unlock(lock);
566 break;
567 }
568 mark = hlist_entry(conn->list.first, struct fsnotify_mark,
569 obj_list);
570 /*
571 * We don't update i_fsnotify_mask / mnt_fsnotify_mask here
572 * since inode / mount is going away anyway. So just remove
573 * mark from the list.
574 */
575 hlist_del_init_rcu(&mark->obj_list);
576 fsnotify_get_mark(mark);
577 spin_unlock(lock);
578 fsnotify_destroy_mark(mark, mark->group);
579 fsnotify_put_mark(mark);
580 }
581}
582
583/* 583/*
584 * Nothing fancy, just initialize lists and locks and counters. 584 * Nothing fancy, just initialize lists and locks and counters.
585 */ 585 */