diff mbox series

[v6,1/4] copy-on-read: Support preadv/pwritev_part functions

Message ID 1597785880-431103-2-git-send-email-andrey.shinkevich@virtuozzo.com (mailing list archive)
State New, archived
Headers show
Series Apply COR-filter to the block-stream permanently | expand

Commit Message

Andrey Shinkevich Aug. 18, 2020, 9:24 p.m. UTC 
Add support for the recently introduced functions
bdrv_co_preadv_part()
and
bdrv_co_pwritev_part()
to the COR-filter driver.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
---
 block/copy-on-read.c | 28 ++++++++++++++++------------
 1 file changed, 16 insertions(+), 12 deletions(-)

Comments

Vladimir Sementsov-Ogievskiy Aug. 19, 2020, 9:53 a.m. UTC | #1 
19.08.2020 00:24, Andrey Shinkevich wrote:
> Add support for the recently introduced functions
> bdrv_co_preadv_part()
> and
> bdrv_co_pwritev_part()
> to the COR-filter driver.
> 
> Signed-off-by: Andrey Shinkevich<andrey.shinkevich@virtuozzo.com>

Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
diff mbox series

Patch

diff --git a/block/copy-on-read.c b/block/copy-on-read.c
index 2816e61..cb03e0f 100644
--- a/block/copy-on-read.c
+++ b/block/copy-on-read.c
@@ -74,21 +74,25 @@  static int64_t cor_getlength(BlockDriverState *bs)
 }
 
 
-static int coroutine_fn cor_co_preadv(BlockDriverState *bs,
-                                      uint64_t offset, uint64_t bytes,
-                                      QEMUIOVector *qiov, int flags)
+static int coroutine_fn cor_co_preadv_part(BlockDriverState *bs,
+                                           uint64_t offset, uint64_t bytes,
+                                           QEMUIOVector *qiov,
+                                           size_t qiov_offset,
+                                           int flags)
 {
-    return bdrv_co_preadv(bs->file, offset, bytes, qiov,
-                          flags | BDRV_REQ_COPY_ON_READ);
+    return bdrv_co_preadv_part(bs->file, offset, bytes, qiov, qiov_offset,
+                               flags | BDRV_REQ_COPY_ON_READ);
 }
 
 
-static int coroutine_fn cor_co_pwritev(BlockDriverState *bs,
-                                       uint64_t offset, uint64_t bytes,
-                                       QEMUIOVector *qiov, int flags)
+static int coroutine_fn cor_co_pwritev_part(BlockDriverState *bs,
+                                            uint64_t offset,
+                                            uint64_t bytes,
+                                            QEMUIOVector *qiov,
+                                            size_t qiov_offset, int flags)
 {
-
-    return bdrv_co_pwritev(bs->file, offset, bytes, qiov, flags);
+    return bdrv_co_pwritev_part(bs->file, offset, bytes, qiov, qiov_offset,
+                                flags);
 }
 
 
@@ -137,8 +141,8 @@  static BlockDriver bdrv_copy_on_read = {
 
     .bdrv_getlength                     = cor_getlength,
 
-    .bdrv_co_preadv                     = cor_co_preadv,
-    .bdrv_co_pwritev                    = cor_co_pwritev,
+    .bdrv_co_preadv_part                = cor_co_preadv_part,
+    .bdrv_co_pwritev_part               = cor_co_pwritev_part,
     .bdrv_co_pwrite_zeroes              = cor_co_pwrite_zeroes,
     .bdrv_co_pdiscard                   = cor_co_pdiscard,
     .bdrv_co_pwritev_compressed         = cor_co_pwritev_compressed,