block: Add a 'flags' param to bdrv_{pread,pwrite,pwrite_sync}()

For consistency with other I/O functions, and in preparation to
implement them using generated_co_wrapper.

Callers were updated using this Coccinelle script:

    @@ expression child, offset, buf, bytes; @@
    - bdrv_pread(child, offset, buf, bytes)
    + bdrv_pread(child, offset, buf, bytes, 0)

    @@ expression child, offset, buf, bytes; @@
    - bdrv_pwrite(child, offset, buf, bytes)
    + bdrv_pwrite(child, offset, buf, bytes, 0)

    @@ expression child, offset, buf, bytes; @@
    - bdrv_pwrite_sync(child, offset, buf, bytes)
    + bdrv_pwrite_sync(child, offset, buf, bytes, 0)

Resulting overly-long lines were then fixed by hand.

Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-Id: <20220609152744.3891847-2-afaria@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/block/vvfat.c b/block/vvfat.c
index b2b58d9..87595df 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -1489,7 +1489,7 @@ static int vvfat_read(BlockDriverState *bs, int64_t sector_num,
                              " allocated\n", sector_num,
                              n >> BDRV_SECTOR_BITS));
                 if (bdrv_pread(s->qcow, sector_num * BDRV_SECTOR_SIZE,
-                               buf + i * 0x200, n) < 0) {
+                               buf + i * 0x200, n, 0) < 0) {
                     return -1;
                 }
                 i += (n >> BDRV_SECTOR_BITS) - 1;
@@ -1978,7 +1978,8 @@ static uint32_t get_cluster_count_for_direntry(BDRVVVFATState* s,
                             return -1;
                         }
                         res = bdrv_pwrite(s->qcow, offset * BDRV_SECTOR_SIZE,
-                                          s->cluster_buffer, BDRV_SECTOR_SIZE);
+                                          s->cluster_buffer, BDRV_SECTOR_SIZE,
+                                          0);
                         if (res < 0) {
                             return -2;
                         }
@@ -3063,7 +3064,7 @@ DLOG(checkpoint());
      */
 DLOG(fprintf(stderr, "Write to qcow backend: %d + %d\n", (int)sector_num, nb_sectors));
     ret = bdrv_pwrite(s->qcow, sector_num * BDRV_SECTOR_SIZE, buf,
-                      nb_sectors * BDRV_SECTOR_SIZE);
+                      nb_sectors * BDRV_SECTOR_SIZE, 0);
     if (ret < 0) {
         fprintf(stderr, "Error writing to qcow backend\n");
         return ret;