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Re: [PATCH v3 13/36] block: use topological sort for permission update
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From: |
Alberto Garcia |
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Subject: |
Re: [PATCH v3 13/36] block: use topological sort for permission update |
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Date: |
Wed, 17 Mar 2021 17:50:10 +0100 |
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User-agent: |
Notmuch/0.18.2 (http://notmuchmail.org) Emacs/24.4.1 (i586-pc-linux-gnu) |
On Wed 17 Mar 2021 03:35:06 PM CET, Vladimir Sementsov-Ogievskiy
<vsementsov@virtuozzo.com> wrote:
> Rewrite bdrv_check_perm(), bdrv_abort_perm_update() and bdrv_set_perm()
> to update nodes in topological sort order instead of simple DFS. With
> topologically sorted nodes, we update a node only when all its parents
> already updated. With DFS it's not so.
This patch does not apply cleanly on the master branch, the branch from
your repository at https://src.openvz.org/scm/~vsementsov/qemu.git does
work fine, however.
Berto
- [PATCH v3 07/36] block: make bdrv_reopen_{prepare, commit, abort} private, (continued)
- [PATCH v3 07/36] block: make bdrv_reopen_{prepare, commit, abort} private, Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 08/36] util: add transactions.c, Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 05/36] block: BdrvChildClass: add .get_parent_aio_context handler, Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 09/36] block: bdrv_refresh_perms: check for parents permissions conflict, Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 10/36] block: refactor bdrv_child* permission functions, Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 12/36] block: inline bdrv_child_*() permission functions calls, Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 11/36] block: rewrite bdrv_child_try_set_perm() using bdrv_refresh_perms(), Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 17/36] block: fix bdrv_replace_node_common, Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 19/36] block: add bdrv_attach_child_noperm() transaction action, Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 13/36] block: use topological sort for permission update, Vladimir Sementsov-Ogievskiy, 2021/03/17
- Re: [PATCH v3 13/36] block: use topological sort for permission update,
Alberto Garcia <=
- [PATCH v3 21/36] block: adapt bdrv_append() for inserting filters, Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 18/36] block: add bdrv_attach_child_common() transaction action, Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 22/36] block: add bdrv_remove_filter_or_cow transaction action, Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 20/36] block: split out bdrv_replace_node_noperm(), Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 14/36] block: add bdrv_drv_set_perm transaction action, Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 25/36] block: drop ignore_children for permission update functions, Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 23/36] block: introduce bdrv_drop_filter(), Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 27/36] block: make bdrv_refresh_limits() to be a transaction action, Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 32/36] block: inline bdrv_check_perm_common(), Vladimir Sementsov-Ogievskiy, 2021/03/17
- [PATCH v3 26/36] block: make bdrv_unset_inherits_from to be a transaction action, Vladimir Sementsov-Ogievskiy, 2021/03/17