diff options
Diffstat (limited to 'block/block-backend.c')
| -rw-r--r-- | block/block-backend.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/block/block-backend.c b/block/block-backend.c index 34500e6080..1fb070b4e4 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -1303,15 +1303,16 @@ int blk_get_flags(BlockBackend *blk) } } +/* Returns the maximum transfer length, in sectors; guaranteed nonzero */ int blk_get_max_transfer_length(BlockBackend *blk) { BlockDriverState *bs = blk_bs(blk); + int max = 0; if (bs) { - return bs->bl.max_transfer_length; - } else { - return 0; + max = bs->bl.max_transfer_length; } + return MIN_NON_ZERO(max, BDRV_REQUEST_MAX_SECTORS); } int blk_get_max_iov(BlockBackend *blk) |