From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54946) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XYrgA-0005nb-6J for qemu-devel@nongnu.org; Tue, 30 Sep 2014 03:17:03 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XYrg3-0006Ff-UZ for qemu-devel@nongnu.org; Tue, 30 Sep 2014 03:16:58 -0400 Received: from mx-v6.kamp.de ([2a02:248:0:51::16]:51516 helo=mx01.kamp.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XYrg3-0006Ef-L7 for qemu-devel@nongnu.org; Tue, 30 Sep 2014 03:16:51 -0400 From: Peter Lieven Date: Tue, 30 Sep 2014 09:09:12 +0200 Message-Id: <1412060952-19407-3-git-send-email-pl@kamp.de> In-Reply-To: <1412060952-19407-1-git-send-email-pl@kamp.de> References: <1412060952-19407-1-git-send-email-pl@kamp.de> Subject: [Qemu-devel] [PATCHv2 2/2] block/iscsi: handle failure on malloc of the allocationmap List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, stefanha@redhat.com, Peter Lieven , ronniesahlberg@gmail.com, pbonzini@redhat.com Signed-off-by: Peter Lieven --- block/iscsi.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/block/iscsi.c b/block/iscsi.c index 5c72ffe..3a01de0 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -316,6 +316,13 @@ static bool is_request_lun_aligned(int64_t sector_num, int nb_sectors, return 1; } +static unsigned long *iscsi_allocationmap_init(IscsiLun *iscsilun) +{ + return bitmap_try_new(DIV_ROUND_UP(sector_lun2qemu(iscsilun->num_blocks, + iscsilun), + iscsilun->cluster_sectors)); +} + static void iscsi_allocationmap_set(IscsiLun *iscsilun, int64_t sector_num, int nb_sectors) { @@ -1402,9 +1409,10 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags, iscsilun->cluster_sectors = (iscsilun->bl.opt_unmap_gran * iscsilun->block_size) >> BDRV_SECTOR_BITS; if (iscsilun->lbprz && !(bs->open_flags & BDRV_O_NOCACHE)) { - iscsilun->allocationmap = - bitmap_new(DIV_ROUND_UP(bs->total_sectors, - iscsilun->cluster_sectors)); + iscsilun->allocationmap = iscsi_allocationmap_init(iscsilun); + if (iscsilun->allocationmap == NULL) { + ret = -ENOMEM; + } } } @@ -1497,10 +1505,7 @@ static int iscsi_truncate(BlockDriverState *bs, int64_t offset) if (iscsilun->allocationmap != NULL) { g_free(iscsilun->allocationmap); - iscsilun->allocationmap = - bitmap_new(DIV_ROUND_UP(sector_lun2qemu(iscsilun->num_blocks, - iscsilun), - iscsilun->cluster_sectors)); + iscsilun->allocationmap = iscsi_allocationmap_init(iscsilun); } return 0; -- 1.7.9.5