From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-f195.google.com ([209.85.216.195]:33519 "EHLO mail-qt0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752401AbeERHuY (ORCPT ); Fri, 18 May 2018 03:50:24 -0400 From: Kent Overstreet To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Cc: Kent Overstreet , Andrew Morton , Dave Chinner , darrick.wong@oracle.com, tytso@mit.edu, linux-btrfs@vger.kernel.org, clm@fb.com, jbacik@fb.com, viro@zeniv.linux.org.uk, willy@infradead.org, peterz@infradead.org Subject: [PATCH 09/10] closures: closure_wait_event() Date: Fri, 18 May 2018 03:49:16 -0400 Message-Id: <20180518074918.13816-19-kent.overstreet@gmail.com> In-Reply-To: <20180518074918.13816-1-kent.overstreet@gmail.com> References: <20180518074918.13816-1-kent.overstreet@gmail.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Signed-off-by: Kent Overstreet --- include/linux/closure.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/include/linux/closure.h b/include/linux/closure.h index 1072bf2c13..ef22d18f7c 100644 --- a/include/linux/closure.h +++ b/include/linux/closure.h @@ -375,4 +375,26 @@ static inline void closure_call(struct closure *cl, closure_fn fn, continue_at_nobarrier(cl, fn, wq); } +#define __closure_wait_event(waitlist, _cond) \ +do { \ + struct closure cl; \ + \ + closure_init_stack(&cl); \ + \ + while (1) { \ + closure_wait(waitlist, &cl); \ + if (_cond) \ + break; \ + closure_sync(&cl); \ + } \ + closure_wake_up(waitlist); \ + closure_sync(&cl); \ +} while (0) + +#define closure_wait_event(waitlist, _cond) \ +do { \ + if (!(_cond)) \ + __closure_wait_event(waitlist, _cond); \ +} while (0) + #endif /* _LINUX_CLOSURE_H */ -- 2.17.0