From c80d8b06cfa59f5d8229379c85dcb2c3bb9c881b Mon Sep 17 00:00:00 2001 From: Max Reitz Date: Wed, 18 Sep 2019 11:51:40 +0200 Subject: block: Add @exact parameter to bdrv_co_truncate() We have two drivers (iscsi and file-posix) that (in some cases) return success from their .bdrv_co_truncate() implementation if the block device is larger than the requested offset, but cannot be shrunk. Some callers do not want that behavior, so this patch adds a new parameter that they can use to turn off that behavior. This patch just adds the parameter and lets the block/io.c and block/block-backend.c functions pass it around. All other callers always pass false and none of the implementations evaluate it, so that this patch does not change existing behavior. Future patches take care of that. Suggested-by: Maxim Levitsky Signed-off-by: Max Reitz Message-id: 20190918095144.955-5-mreitz@redhat.com Reviewed-by: Maxim Levitsky Signed-off-by: Max Reitz --- block/vdi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'block/vdi.c') diff --git a/block/vdi.c b/block/vdi.c index 806ba7f53c..0142da7233 100644 --- a/block/vdi.c +++ b/block/vdi.c @@ -874,7 +874,7 @@ static int coroutine_fn vdi_co_do_create(BlockdevCreateOptions *create_options, } if (image_type == VDI_TYPE_STATIC) { - ret = blk_truncate(blk, offset + blocks * block_size, + ret = blk_truncate(blk, offset + blocks * block_size, false, PREALLOC_MODE_OFF, errp); if (ret < 0) { error_prepend(errp, "Failed to statically allocate file"); -- cgit v1.2.3