block: Remove bdrv_read() and bdrv_write()

No one is using these functions anymore, all callers have switched to
the byte-based bdrv_pread() and bdrv_pwrite()

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 7 insertions, 36 deletions

diff --git a/block/io.c b/block/io.c
index 0412a51..aeebc9c 100644
--- a/block/io.c
+++ b/block/io.c
@@ -837,42 +837,6 @@ static int bdrv_prwv_co(BdrvChild *child, int64_t offset,
     return rwco.ret;
 }
 
-/*
- * Process a synchronous request using coroutines
- */
-static int bdrv_rw_co(BdrvChild *child, int64_t sector_num, uint8_t *buf,
-                      int nb_sectors, bool is_write, BdrvRequestFlags flags)
-{
-    QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf,
-                                            nb_sectors * BDRV_SECTOR_SIZE);
-
-    if (nb_sectors < 0 || nb_sectors > BDRV_REQUEST_MAX_SECTORS) {
-        return -EINVAL;
-    }
-
-    return bdrv_prwv_co(child, sector_num << BDRV_SECTOR_BITS,
-                        &qiov, is_write, flags);
-}
-
-/* return < 0 if error. See bdrv_write() for the return codes */
-int bdrv_read(BdrvChild *child, int64_t sector_num,
-              uint8_t *buf, int nb_sectors)
-{
-    return bdrv_rw_co(child, sector_num, buf, nb_sectors, false, 0);
-}
-
-/* Return < 0 if error. Important errors are:
-  -EIO         generic I/O error (may happen for all errors)
-  -ENOMEDIUM   No media inserted.
-  -EINVAL      Invalid sector number or nb_sectors
-  -EACCES      Trying to write a read-only device
-*/
-int bdrv_write(BdrvChild *child, int64_t sector_num,
-               const uint8_t *buf, int nb_sectors)
-{
-    return bdrv_rw_co(child, sector_num, (uint8_t *)buf, nb_sectors, true, 0);
-}
-
 int bdrv_pwrite_zeroes(BdrvChild *child, int64_t offset,
                        int bytes, BdrvRequestFlags flags)
 {
@@ -935,6 +899,7 @@ int bdrv_preadv(BdrvChild *child, int64_t offset, QEMUIOVector *qiov)
     return qiov->size;
 }
 
+/* See bdrv_pwrite() for the return codes */
 int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int bytes)
 {
     QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
@@ -958,6 +923,12 @@ int bdrv_pwritev(BdrvChild *child, int64_t offset, QEMUIOVector *qiov)
     return qiov->size;
 }
 
+/* Return no. of bytes on success or < 0 on error. Important errors are:
+  -EIO         generic I/O error (may happen for all errors)
+  -ENOMEDIUM   No media inserted.
+  -EINVAL      Invalid offset or number of bytes
+  -EACCES      Trying to write a read-only device
+*/
 int bdrv_pwrite(BdrvChild *child, int64_t offset, const void *buf, int bytes)
 {
     QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);