On Sat, 28 Oct 2017, Hou Tao wrote:
Remove the global epmutex from ep_free() and eventpoll_release_file(). In the later patches, we will add locks with a smaller granularity to serve the same purposes of epmutex. Signed-off-by: Hou Tao <houtao1@xxxxxxxxxx> --- fs/eventpoll.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/fs/eventpoll.c b/fs/eventpoll.c index 2fabd19..26ab0c5 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -835,7 +835,6 @@ static void ep_free(struct eventpoll *ep) * anymore. The only hit might come from eventpoll_release_file() but * holding "epmutex" is sufficient here. */
^^ What about this comment (and the equivalent one in eventpoll_release_file()?
- mutex_lock(&epmutex);
...even if you fix it in a later patch, this patch breaks bisection. Now we just race between ep_free() and eventpoll_release_file(). This patch should be folded in, no? Thanks, Davidlohr
