From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40896) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cqAKn-0003Q4-Gr for qemu-devel@nongnu.org; Mon, 20 Mar 2017 23:19:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cqAKm-0001Ss-Mu for qemu-devel@nongnu.org; Mon, 20 Mar 2017 23:19:45 -0400 From: Fam Zheng Date: Tue, 21 Mar 2017 11:16:32 +0800 Message-Id: <20170321031635.22123-14-famz@redhat.com> In-Reply-To: <20170321031635.22123-1-famz@redhat.com> References: <20170321031635.22123-1-famz@redhat.com> Subject: [Qemu-devel] [PATCH RFC 13/16] nbd: Allow BLK_PERM_AIO_CONTEXT_CHANGE on BB List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Stefan Hajnoczi , Kevin Wolf , Max Reitz , qemu-block@nongnu.org This is safe because of the aio context notifier we'll register on this node. So allow it. Signed-off-by: Fam Zheng --- nbd/server.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/nbd/server.c b/nbd/server.c index 924a1fe..a8f58fb 100644 --- a/nbd/server.c +++ b/nbd/server.c @@ -900,8 +900,10 @@ NBDExport *nbd_export_new(BlockDriverState *bs, off_t dev_offset, off_t size, if ((nbdflags & NBD_FLAG_READ_ONLY) == 0) { perm |= BLK_PERM_WRITE; } - blk = blk_new(perm, BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE_UNCHANGED | - BLK_PERM_WRITE | BLK_PERM_GRAPH_MOD); + blk = blk_new(perm, + BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE_UNCHANGED | + BLK_PERM_WRITE | BLK_PERM_GRAPH_MOD | + BLK_PERM_AIO_CONTEXT_CHANGE); ret = blk_insert_bs(blk, bs, errp); if (ret < 0) { goto fail; -- 2.9.3