From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37325) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zotcw-00026q-0T for qemu-devel@nongnu.org; Wed, 21 Oct 2015 09:40:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zotcv-0006Mm-79 for qemu-devel@nongnu.org; Wed, 21 Oct 2015 09:40:25 -0400 Date: Wed, 21 Oct 2015 15:40:17 +0200 From: Kevin Wolf Message-ID: <20151021134017.GB3962@noname.redhat.com> References: <1445393209-26545-1-git-send-email-famz@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1445393209-26545-1-git-send-email-famz@redhat.com> Subject: Re: [Qemu-devel] [PATCH v5 00/12] block: Protect nested event loop with bdrv_drained_begin and bdrv_drained_end List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Fam Zheng Cc: pbonzini@redhat.com, stefanha@redhat.com, qemu-devel@nongnu.org, qemu-block@nongnu.org Am 21.10.2015 um 04:06 hat Fam Zheng geschrieben: > v5: Rebase onto Kevin's block tree. > > v4: Rebase on to master so fix the "bdrv_move_feature_fields" issue. > > v3: Call bdrv_drain unconditionally in bdrv_drained_begin. > Document the internal I/O implications between bdrv_drain_begin and end. > > The nested aio_poll()'s in block layer has a bug that new r/w requests from > ioeventfds and nbd exports are processed, which might break the caller's > semantics (qmp_transaction) or even pointers (bdrv_reopen). Patches 1-8 and 10-12: Reviewed-by: Kevin Wolf