From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37346) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZrSEB-00048T-9Z for qemu-devel@nongnu.org; Wed, 28 Oct 2015 11:01:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZrSEA-0003Co-F8 for qemu-devel@nongnu.org; Wed, 28 Oct 2015 11:01:27 -0400 From: "Denis V. Lunev" Date: Wed, 28 Oct 2015 18:01:03 +0300 Message-Id: <1446044465-19312-3-git-send-email-den@openvz.org> In-Reply-To: <1446044465-19312-1-git-send-email-den@openvz.org> References: <1446044465-19312-1-git-send-email-den@openvz.org> Subject: [Qemu-devel] [PATCH 2/4] aio_context: create aio_context_is_locked helper List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Denis V. Lunev" , Paolo Bonzini , qemu-devel@nongnu.org, Stefan Hajnoczi , qemu-stable@nongnu.org This helper is necessary to ensure locking constraints. Signed-off-by: Denis V. Lunev CC: Stefan Hajnoczi CC: Paolo Bonzini --- async.c | 5 +++++ include/block/aio.h | 3 +++ 2 files changed, 8 insertions(+) diff --git a/async.c b/async.c index bdc64a3..4a9250e 100644 --- a/async.c +++ b/async.c @@ -361,3 +361,8 @@ void aio_context_release(AioContext *ctx) { rfifolock_unlock(&ctx->lock); } + +int aio_context_is_locked(AioContext *ctx) +{ + return rfifolock_is_locked(&ctx->lock); +} diff --git a/include/block/aio.h b/include/block/aio.h index bcc7d43..d20c7b8 100644 --- a/include/block/aio.h +++ b/include/block/aio.h @@ -166,6 +166,9 @@ void aio_context_acquire(AioContext *ctx); /* Relinquish ownership of the AioContext. */ void aio_context_release(AioContext *ctx); +/* Check that AioContext is locked by the caller. */ +int aio_context_is_locked(AioContext *ctx); + /** * aio_bh_new: Allocate a new bottom half structure. * -- 2.1.4