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Re: [PATCH v7 10/47] mirror-top: Support compressed writes


From: Andrey Shinkevich
Subject: Re: [PATCH v7 10/47] mirror-top: Support compressed writes
Date: Wed, 8 Jul 2020 20:58:04 +0300
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.9.0

On 25.06.2020 18:21, Max Reitz wrote:
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
  block/mirror.c | 10 ++++++++++
  1 file changed, 10 insertions(+)

diff --git a/block/mirror.c b/block/mirror.c
index e8e8844afc..469acf4600 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -1480,6 +1480,15 @@ static int coroutine_fn 
bdrv_mirror_top_pdiscard(BlockDriverState *bs,
                                      NULL, 0);
  }
+static int coroutine_fn bdrv_mirror_top_pwritev_compressed(BlockDriverState *bs,
+                                                           uint64_t offset,
+                                                           uint64_t bytes,
+                                                           QEMUIOVector *qiov)
+{
+    return bdrv_mirror_top_pwritev(bs, offset, bytes, qiov,
+                                   BDRV_REQ_WRITE_COMPRESSED);
+}
+
  static void bdrv_mirror_top_refresh_filename(BlockDriverState *bs)
  {
      if (bs->backing == NULL) {
@@ -1526,6 +1535,7 @@ static BlockDriver bdrv_mirror_top = {
      .bdrv_co_pwritev            = bdrv_mirror_top_pwritev,
      .bdrv_co_pwrite_zeroes      = bdrv_mirror_top_pwrite_zeroes,
      .bdrv_co_pdiscard           = bdrv_mirror_top_pdiscard,
+    .bdrv_co_pwritev_compressed = bdrv_mirror_top_pwritev_compressed,
      .bdrv_co_flush              = bdrv_mirror_top_flush,
      .bdrv_co_block_status       = bdrv_co_block_status_from_backing,
      .bdrv_refresh_filename      = bdrv_mirror_top_refresh_filename,


Reviewed-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>




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