From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:57813) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1StJXS-0006TO-Je for qemu-devel@nongnu.org; Mon, 23 Jul 2012 10:23:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1StJXO-0005vG-L8 for qemu-devel@nongnu.org; Mon, 23 Jul 2012 10:23:10 -0400 Received: from mail-bk0-f45.google.com ([209.85.214.45]:65306) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1StJXO-0005uq-EG for qemu-devel@nongnu.org; Mon, 23 Jul 2012 10:23:06 -0400 Received: by mail-bk0-f45.google.com with SMTP id ji1so4506612bkc.4 for ; Mon, 23 Jul 2012 07:23:06 -0700 (PDT) From: benoit.canet@gmail.com Date: Mon, 23 Jul 2012 16:22:58 +0200 Message-Id: <1343053380-12133-2-git-send-email-benoit@irqsave.net> In-Reply-To: <1343053380-12133-1-git-send-email-benoit@irqsave.net> References: <1343053380-12133-1-git-send-email-benoit@irqsave.net> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH V4 1/3] block: Add bdrv_are_busy() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, stefanha@gmail.com, =?UTF-8?q?Beno=C3=AEt=20Canet?= , stefanha@linux.vnet.ibm.com, pbonzini@redhat.com From: Benoît Canet bdrv_are_busy will be used to check if any of the bs are in use or if one of them have a running block job. The first user will be qmp_migrate(). Signed-off-by: Benoit Canet --- block.c | 13 +++++++++++++ block.h | 2 ++ 2 files changed, 15 insertions(+) diff --git a/block.c b/block.c index ce7eb8f..bc8f160 100644 --- a/block.c +++ b/block.c @@ -4027,6 +4027,19 @@ out: return ret; } +int bdrv_are_busy(void) +{ + BlockDriverState *bs; + + QTAILQ_FOREACH(bs, &bdrv_states, list) { + if (bs->job || bdrv_in_use(bs)) { + return -EBUSY; + } + } + + return 0; +} + void *block_job_create(const BlockJobType *job_type, BlockDriverState *bs, int64_t speed, BlockDriverCompletionFunc *cb, void *opaque, Error **errp) diff --git a/block.h b/block.h index c89590d..0a3de2f 100644 --- a/block.h +++ b/block.h @@ -337,6 +337,8 @@ void bdrv_disable_copy_on_read(BlockDriverState *bs); void bdrv_set_in_use(BlockDriverState *bs, int in_use); int bdrv_in_use(BlockDriverState *bs); +int bdrv_are_busy(void); + enum BlockAcctType { BDRV_ACCT_READ, BDRV_ACCT_WRITE, -- 1.7.9.5