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block/dirty-bitmap: add bdrv_enable_dirty_bitmap_locked 

Add _locked version of bdrv_enable_dirty_bitmap, to fix dirty bitmap
migration in the following patch.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-id: 20180625165745.25259-2-vsementsov@virtuozzo.com
Signed-off-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2018-07-04 02:12:49 -04:00 committed by John Snow
parent 79c2b203a9
commit 92bcea40d3
2 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
block/dirty-bitmap.c
View File

@ -241,6 +241,12 @@ int bdrv_dirty_bitmap_create_successor(BlockDriverState *bs,
return 0;
}
void bdrv_enable_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap)
{
assert(!bdrv_dirty_bitmap_frozen(bitmap));
bitmap->disabled = false;
}
/* Called with BQL taken. */
void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap)
{
@ -424,8 +430,7 @@ void bdrv_disable_dirty_bitmap(BdrvDirtyBitmap *bitmap)
void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap)
{
bdrv_dirty_bitmap_lock(bitmap);
assert(!bdrv_dirty_bitmap_frozen(bitmap));
bitmap->disabled = false;
bdrv_enable_dirty_bitmap_locked(bitmap);
bdrv_dirty_bitmap_unlock(bitmap);
}

1
include/block/dirty-bitmap.h
View File

@ -32,6 +32,7 @@ void bdrv_remove_persistent_dirty_bitmap(BlockDriverState *bs,
Error **errp);
void bdrv_disable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
void bdrv_enable_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap);
BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs);
uint32_t bdrv_get_default_bitmap_granularity(BlockDriverState *bs);
uint32_t bdrv_dirty_bitmap_granularity(const BdrvDirtyBitmap *bitmap);