@@ -674,11 +674,12 @@ typedef struct BlockLimits {
* otherwise. */
uint32_t request_alignment;
- /* Maximum number of bytes that can be discarded at once (since it
- * is signed, it must be < 2G, if set). Must be multiple of
- * pdiscard_alignment, but need not be power of 2. May be 0 if no
- * inherent 32-bit limit */
- int32_t max_pdiscard;
+ /*
+ * Maximum number of bytes that can be discarded at once. Must be multiple
+ * of pdiscard_alignment, but need not be power of 2. May be 0 if no
+ * inherent 64-bit limit.
+ */
+ int64_t max_pdiscard;
/* Optimal alignment for discard requests in bytes. A power of 2
* is best but not mandatory. Must be a multiple of
@@ -3056,7 +3056,8 @@ int coroutine_fn bdrv_co_pdiscard(BdrvChild *child, int64_t offset,
int64_t bytes)
{
BdrvTrackedRequest req;
- int max_pdiscard, ret;
+ int ret;
+ int64_t max_pdiscard;
int head, tail, align;
BlockDriverState *bs = child->bs;