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From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
To: qemu-block@nongnu.org
Cc: qemu-devel@nongnu.org, armbru@redhat.com,
	xiechanglong.d@gmail.com, wencongyang2@huawei.com,
	fam@euphon.net, stefanha@redhat.com, eblake@redhat.com,
	hreitz@redhat.com, kwolf@redhat.com, vsementsov@virtuozzo.com,
	jsnow@redhat.com, nikita.lapshin@virtuozzo.com
Subject: [PATCH v4 01/18] block/block-copy: move copy_bitmap initialization to block_copy_state_new()
Date: Wed, 16 Feb 2022 20:46:00 +0100	[thread overview]
Message-ID: <20220216194617.126484-2-vsementsov@virtuozzo.com> (raw)
In-Reply-To: <20220216194617.126484-1-vsementsov@virtuozzo.com>

We are going to complicate bitmap initialization in the further
commit. And in future, backup job will be able to work without filter
(when source is immutable), so we'll need same bitmap initialization in
copy-before-write filter and in backup job. So, it's reasonable to do
it in block-copy.

Note that for now cbw_open() is the only caller of
block_copy_state_new().

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
---
 block/block-copy.c        | 1 +
 block/copy-before-write.c | 4 ----
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/block/block-copy.c b/block/block-copy.c
index ce116318b5..abda7a80bd 100644
--- a/block/block-copy.c
+++ b/block/block-copy.c
@@ -402,6 +402,7 @@ BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
         return NULL;
     }
     bdrv_disable_dirty_bitmap(copy_bitmap);
+    bdrv_set_dirty_bitmap(copy_bitmap, 0, bdrv_dirty_bitmap_size(copy_bitmap));
 
     /*
      * If source is in backing chain of target assume that target is going to be
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index c30a5ff8de..5bdaf0a9d9 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -149,7 +149,6 @@ static int cbw_open(BlockDriverState *bs, QDict *options, int flags,
                     Error **errp)
 {
     BDRVCopyBeforeWriteState *s = bs->opaque;
-    BdrvDirtyBitmap *copy_bitmap;
 
     bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds,
                                BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
@@ -177,9 +176,6 @@ static int cbw_open(BlockDriverState *bs, QDict *options, int flags,
         return -EINVAL;
     }
 
-    copy_bitmap = block_copy_dirty_bitmap(s->bcs);
-    bdrv_set_dirty_bitmap(copy_bitmap, 0, bdrv_dirty_bitmap_size(copy_bitmap));
-
     return 0;
 }
 
-- 
2.31.1



  reply	other threads:[~2022-02-16 19:55 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-16 19:45 [PATCH v4 00/18] Make image fleecing more usable Vladimir Sementsov-Ogievskiy
2022-02-16 19:46 ` Vladimir Sementsov-Ogievskiy [this message]
2022-02-16 19:46 ` [PATCH v4 02/18] block/dirty-bitmap: bdrv_merge_dirty_bitmap(): add return value Vladimir Sementsov-Ogievskiy
2022-02-16 19:46 ` [PATCH v4 03/18] block/block-copy: block_copy_state_new(): add bitmap parameter Vladimir Sementsov-Ogievskiy
2022-02-24 12:01   ` Hanna Reitz
2022-02-16 19:46 ` [PATCH v4 04/18] block/copy-before-write: add bitmap open parameter Vladimir Sementsov-Ogievskiy
2022-02-24 12:07   ` Hanna Reitz
2022-02-24 13:27     ` Vladimir Sementsov-Ogievskiy
2022-02-16 19:46 ` [PATCH v4 05/18] block/block-copy: add block_copy_reset() Vladimir Sementsov-Ogievskiy
2022-02-16 19:46 ` [PATCH v4 06/18] block: intoduce reqlist Vladimir Sementsov-Ogievskiy
2022-02-24 12:08   ` Hanna Reitz
2022-02-16 19:46 ` [PATCH v4 07/18] block/reqlist: reqlist_find_conflict(): use ranges_overlap() Vladimir Sementsov-Ogievskiy
2022-02-24 12:08   ` Hanna Reitz
2022-02-16 19:46 ` [PATCH v4 08/18] block/dirty-bitmap: introduce bdrv_dirty_bitmap_status() Vladimir Sementsov-Ogievskiy
2022-02-24 12:20   ` Hanna Reitz
2022-02-16 19:46 ` [PATCH v4 09/18] block/reqlist: add reqlist_wait_all() Vladimir Sementsov-Ogievskiy
2022-02-16 19:46 ` [PATCH v4 10/18] block/io: introduce block driver snapshot-access API Vladimir Sementsov-Ogievskiy
2022-02-24 12:24   ` Hanna Reitz
2022-02-16 19:46 ` [PATCH v4 11/18] block: introduce snapshot-access filter Vladimir Sementsov-Ogievskiy
2022-02-24 12:29   ` Hanna Reitz
2022-02-16 19:46 ` [PATCH v4 12/18] block: copy-before-write: realize snapshot-access API Vladimir Sementsov-Ogievskiy
2022-02-24 12:46   ` Hanna Reitz
2022-02-24 13:42     ` Vladimir Sementsov-Ogievskiy
2022-02-16 19:46 ` [PATCH v4 13/18] iotests/image-fleecing: add test-case for fleecing format node Vladimir Sementsov-Ogievskiy
2022-02-24 12:48   ` Hanna Reitz
2022-02-16 19:46 ` [PATCH v4 14/18] iotests.py: add qemu_io_pipe_and_status() Vladimir Sementsov-Ogievskiy
2022-02-24 12:52   ` Hanna Reitz
2022-02-24 13:42     ` Vladimir Sementsov-Ogievskiy
2022-02-16 19:46 ` [PATCH v4 15/18] iotests/image-fleecing: add test case with bitmap Vladimir Sementsov-Ogievskiy
2022-02-24 12:58   ` Hanna Reitz
2022-02-24 14:07     ` Vladimir Sementsov-Ogievskiy
2022-02-16 19:46 ` [PATCH v4 16/18] block: blk_root(): return non-const pointer Vladimir Sementsov-Ogievskiy
2022-02-16 19:46 ` [PATCH v4 17/18] qapi: backup: add immutable-source parameter Vladimir Sementsov-Ogievskiy
2022-02-24 13:05   ` Hanna Reitz
2022-02-24 14:14     ` Vladimir Sementsov-Ogievskiy
2022-02-16 19:46 ` [PATCH v4 18/18] iotests/image-fleecing: test push backup with fleecing Vladimir Sementsov-Ogievskiy

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