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-rw-r--r--block/block-backend.c5
-rw-r--r--include/sysemu/block-backend.h3
2 files changed, 5 insertions, 3 deletions
diff --git a/block/block-backend.c b/block/block-backend.c
index 105f0afff9..1e21498b2c 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -1626,7 +1626,7 @@ BlockAIOCB *blk_aio_ioctl(BlockBackend *blk, unsigned long int req, void *buf,
 
 /* To be called between exactly one pair of blk_inc/dec_in_flight() */
 static int coroutine_fn
-blk_do_pdiscard(BlockBackend *blk, int64_t offset, int bytes)
+blk_do_pdiscard(BlockBackend *blk, int64_t offset, int64_t bytes)
 {
     int ret;
 
@@ -1657,7 +1657,8 @@ BlockAIOCB *blk_aio_pdiscard(BlockBackend *blk,
                         cb, opaque);
 }
 
-int coroutine_fn blk_co_pdiscard(BlockBackend *blk, int64_t offset, int bytes)
+int coroutine_fn blk_co_pdiscard(BlockBackend *blk, int64_t offset,
+                                 int64_t bytes)
 {
     int ret;
 
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 91457a081e..3efa025639 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -181,7 +181,8 @@ void blk_aio_cancel_async(BlockAIOCB *acb);
 int blk_ioctl(BlockBackend *blk, unsigned long int req, void *buf);
 BlockAIOCB *blk_aio_ioctl(BlockBackend *blk, unsigned long int req, void *buf,
                           BlockCompletionFunc *cb, void *opaque);
-int blk_co_pdiscard(BlockBackend *blk, int64_t offset, int bytes);
+int coroutine_fn blk_co_pdiscard(BlockBackend *blk, int64_t offset,
+                                 int64_t bytes);
 int blk_co_flush(BlockBackend *blk);
 int blk_flush(BlockBackend *blk);
 int blk_commit_all(void);