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block: introduce persistent dirty bitmaps

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New field BdrvDirtyBitmap.persistent means, that bitmap should be saved
by format driver in .bdrv_close and .bdrv_inactivate. No format driver
supports it for now.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-id: 20170628120530.31251-18-vsementsov@virtuozzo.com
[mreitz: Fixed indentation]
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2017-06-28 15:05:17 +03:00 • committed by Max Reitz
parent cca43ae1e1
commit a88b179fdb
3 changed files with 34 additions and 0 deletions
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4
include/block/dirty-bitmap.h
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@ -73,6 +73,8 @@ void bdrv_dirty_bitmap_deserialize_finish(BdrvDirtyBitmap *bitmap);
void bdrv_dirty_bitmap_set_readonly(BdrvDirtyBitmap *bitmap, bool value);
void bdrv_dirty_bitmap_set_autoload(BdrvDirtyBitmap *bitmap, bool autoload);
void bdrv_dirty_bitmap_set_persistance(BdrvDirtyBitmap *bitmap,
bool persistent);
/* Functions that require manual locking. */
void bdrv_dirty_bitmap_lock(BdrvDirtyBitmap *bitmap);
@ -91,5 +93,7 @@ void bdrv_dirty_bitmap_truncate(BlockDriverState *bs);
bool bdrv_dirty_bitmap_readonly(const BdrvDirtyBitmap *bitmap);
bool bdrv_has_readonly_bitmaps(BlockDriverState *bs);
bool bdrv_dirty_bitmap_get_autoload(const BdrvDirtyBitmap *bitmap);
bool bdrv_dirty_bitmap_get_persistance(BdrvDirtyBitmap *bitmap);
bool bdrv_has_changed_persistent_bitmaps(BlockDriverState *bs);
#endif