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block: Remove subtree drains

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Subtree drains are not used any more. Remove them.

After this, BdrvChildClass.attach/detach() don't poll any more.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20221118174110.55183-11-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2022-11-18 18:41:05 +01:00
parent 92140b9f3f
commit 299403aeda
6 changed files with 44 additions and 389 deletions
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12
include/block/block_int-io.h
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@ -179,16 +179,4 @@ void bdrv_bsc_invalidate_range(BlockDriverState *bs,
*/
void bdrv_bsc_fill(BlockDriverState *bs, int64_t offset, int64_t bytes);
/*
* "I/O or GS" API functions. These functions can run without
* the BQL, but only in one specific iothread/main loop.
*
* See include/block/block-io.h for more information about
* the "I/O or GS" API.
*/
void bdrv_apply_subtree_drain(BdrvChild *child, BlockDriverState *new_parent);
void bdrv_unapply_subtree_drain(BdrvChild *child, BlockDriverState *old_parent);
#endif /* BLOCK_INT_IO_H */