diff options
| author | Peter Lieven <pl@kamp.de> | 2014-09-30 09:09:12 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-09-30 13:30:51 +0200 |
| commit | a9fe4c957b762dbb814c254204c082bab93c8459 (patch) | |
| tree | 25a502636161b467646337512b68ade7b3615fca | |
| parent | be4d57c1ea7f17b9cadb0150b330efd9b6026972 (diff) | |
| download | qemu-a9fe4c957b762dbb814c254204c082bab93c8459.zip qemu-a9fe4c957b762dbb814c254204c082bab93c8459.tar.gz qemu-a9fe4c957b762dbb814c254204c082bab93c8459.tar.bz2 | |
block/iscsi: handle failure on malloc of the allocationmap
Signed-off-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | block/iscsi.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/block/iscsi.c b/block/iscsi.c index 3c1b416..26bded3 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -317,6 +317,13 @@ 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) { @@ -1403,9 +1410,10 @@ 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; + } } } @@ -1498,10 +1506,7 @@ 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; |