提交 ce61856b 编写于 作者: E Eric Paris

dnotify: do not bother to lock entry->lock when reading mask

entry->lock is needed to make sure entry->mask does not change while
manipulating it.  In dnotify_should_send_event() we don't care if we get an
old or a new mask value out of this entry so there is no point it taking
the lock.
Signed-off-by: NEric Paris <eparis@redhat.com>
上级 5ac697b7
...@@ -153,9 +153,8 @@ static bool dnotify_should_send_event(struct fsnotify_group *group, ...@@ -153,9 +153,8 @@ static bool dnotify_should_send_event(struct fsnotify_group *group,
if (!entry) if (!entry)
return false; return false;
spin_lock(&entry->lock);
send = (mask & entry->mask); send = (mask & entry->mask);
spin_unlock(&entry->lock);
fsnotify_put_mark(entry); /* matches fsnotify_find_mark_entry */ fsnotify_put_mark(entry); /* matches fsnotify_find_mark_entry */
return send; return send;
......
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