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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
/*
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* Copy-on-read filter block driver
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*
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* The filter driver performs Copy-On-Read (COR) operations
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*
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* Copyright (c) 2018-2020 Virtuozzo International GmbH.
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*
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* Author:
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* Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef BLOCK_COPY_ON_READ_H
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#define BLOCK_COPY_ON_READ_H
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#include "block/block_int.h"
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void no_coroutine_fn GRAPH_UNLOCKED
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bdrv_cor_filter_drop(BlockDriverState *cor_filter_bs);
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#endif /* BLOCK_COPY_ON_READ_H */
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