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authorMax Reitz <mreitz@redhat.com>2017-06-13 22:20:52 +0200
committerMax Reitz <mreitz@redhat.com>2017-07-11 17:45:01 +0200
commit8243ccb7433e59a3faa3cca27fb6c40d6da2b37c (patch)
tree18ab94c4ea476c161f7c579c30e9203abb96afbc /block/qed.c
parent32a1681adc44f52e7c8a19408cd3be8452a0897b (diff)
block: Add PreallocMode to BD.bdrv_truncate()
Add a PreallocMode parameter to the bdrv_truncate() function implemented by each block driver. Currently, we always pass PREALLOC_MODE_OFF and no driver accepts anything else. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20170613202107.10125-2-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block/qed.c')
-rw-r--r--block/qed.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/block/qed.c b/block/qed.c
index 385381a78a..8f7e45ca5c 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -1342,12 +1342,19 @@ static int coroutine_fn bdrv_qed_co_pwrite_zeroes(BlockDriverState *bs,
QED_AIOCB_WRITE | QED_AIOCB_ZERO);
}
-static int bdrv_qed_truncate(BlockDriverState *bs, int64_t offset, Error **errp)
+static int bdrv_qed_truncate(BlockDriverState *bs, int64_t offset,
+ PreallocMode prealloc, Error **errp)
{
BDRVQEDState *s = bs->opaque;
uint64_t old_image_size;
int ret;
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_lookup[prealloc]);
+ return -ENOTSUP;
+ }
+
if (!qed_is_image_size_valid(offset, s->header.cluster_size,
s->header.table_size)) {
error_setg(errp, "Invalid image size specified");