mirror of
https://github.com/qemu/qemu.git
synced 2024-12-05 09:43:44 +08:00
9275fc72bd
This adds GRAPH_RDLOCK annotations to declare that callers of bdrv_(un)freeze_backing_chain() need to hold a reader lock for the graph because it calls bdrv_filter_or_cow_child(), which accesses bs->file/backing. Use the opportunity to make bdrv_is_backing_chain_frozen() static, it has no external callers. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-ID: <20231027155333.420094-10-kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
34 lines
1.1 KiB
C
34 lines
1.1 KiB
C
/*
|
|
* Copy-on-read filter block driver
|
|
*
|
|
* The filter driver performs Copy-On-Read (COR) operations
|
|
*
|
|
* Copyright (c) 2018-2020 Virtuozzo International GmbH.
|
|
*
|
|
* Author:
|
|
* Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef BLOCK_COPY_ON_READ_H
|
|
#define BLOCK_COPY_ON_READ_H
|
|
|
|
#include "block/block_int.h"
|
|
|
|
void no_coroutine_fn GRAPH_UNLOCKED
|
|
bdrv_cor_filter_drop(BlockDriverState *cor_filter_bs);
|
|
|
|
#endif /* BLOCK_COPY_ON_READ_H */
|