block: Add a 'flags' param to blk_pread()

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

Callers were updated using this Coccinelle script:

    @@ expression blk, offset, buf, bytes; @@
    - blk_pread(blk, offset, buf, bytes)
    + blk_pread(blk, offset, buf, bytes, 0)

It had no effect on hw/block/nand.c, presumably due to the #if, so that
file was updated manually.

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: Greg Kurz <groug@kaod.org>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220705161527.1054072-3-afaria@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/block/block-backend.c b/block/block-backend.c
index 4c5e130..bdde90d 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -1563,14 +1563,15 @@ BlockAIOCB *blk_aio_pwrite_zeroes(BlockBackend *blk, int64_t offset,
                         flags | BDRV_REQ_ZERO_WRITE, cb, opaque);
 }
 
-int blk_pread(BlockBackend *blk, int64_t offset, void *buf, int bytes)
+int blk_pread(BlockBackend *blk, int64_t offset, void *buf, int bytes,
+              BdrvRequestFlags flags)
 {
     int ret;
     QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
     IO_OR_GS_CODE();
 
     blk_inc_in_flight(blk);
-    ret = blk_do_preadv(blk, offset, bytes, &qiov, 0);
+    ret = blk_do_preadv(blk, offset, bytes, &qiov, flags);
     blk_dec_in_flight(blk);
 
     return ret;