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Diffstat (limited to 'block/io.c')
-rw-r--r--block/io.c20
1 files changed, 13 insertions, 7 deletions
diff --git a/block/io.c b/block/io.c
index b3ff9bec38..72d72109a5 100644
--- a/block/io.c
+++ b/block/io.c
@@ -700,6 +700,18 @@ int bdrv_make_zero(BlockDriverState *bs, BdrvRequestFlags flags)
}
}
+int bdrv_preadv(BlockDriverState *bs, int64_t offset, QEMUIOVector *qiov)
+{
+ int ret;
+
+ ret = bdrv_prwv_co(bs, offset, qiov, false, 0);
+ if (ret < 0) {
+ return ret;
+ }
+
+ return qiov->size;
+}
+
int bdrv_pread(BlockDriverState *bs, int64_t offset, void *buf, int bytes)
{
QEMUIOVector qiov;
@@ -707,19 +719,13 @@ int bdrv_pread(BlockDriverState *bs, int64_t offset, void *buf, int bytes)
.iov_base = (void *)buf,
.iov_len = bytes,
};
- int ret;
if (bytes < 0) {
return -EINVAL;
}
qemu_iovec_init_external(&qiov, &iov, 1);
- ret = bdrv_prwv_co(bs, offset, &qiov, false, 0);
- if (ret < 0) {
- return ret;
- }
-
- return bytes;
+ return bdrv_preadv(bs, offset, &qiov);
}
int bdrv_pwritev(BlockDriverState *bs, int64_t offset, QEMUIOVector *qiov)