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author | Yu Kuai <yukuai3@huawei.com> | 2023-07-06 16:37:27 +0800 |
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committer | Song Liu <song@kernel.org> | 2023-07-27 00:13:30 -0700 |
commit | 44abfa6a95df425c0660d56043020b67e6d93ab8 (patch) | |
tree | 302427e26586fcb1107f64b45adf5f99fbe60f92 /tools/perf/trace | |
parent | b4d129640f194ffc4cc64c3e97f98ae944c072e8 (diff) | |
download | linux-stable-44abfa6a95df425c0660d56043020b67e6d93ab8.tar.gz linux-stable-44abfa6a95df425c0660d56043020b67e6d93ab8.tar.bz2 linux-stable-44abfa6a95df425c0660d56043020b67e6d93ab8.zip |
md/md-bitmap: hold 'reconfig_mutex' in backlog_store()
Several reasons why 'reconfig_mutex' should be held:
1) rdev_for_each() is not safe to be called without the lock, because
rdev can be removed concurrently.
2) mddev_destroy_serial_pool() and mddev_create_serial_pool() should not
be called concurrently.
3) mddev_suspend() from mddev_destroy/create_serial_pool() should be
protected by the lock.
Fixes: 10c92fca636e ("md-bitmap: create and destroy wb_info_pool with the change of backlog")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20230706083727.608914-3-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
Diffstat (limited to 'tools/perf/trace')
0 files changed, 0 insertions, 0 deletions