md/raid5-cache: use READ_ONCE/WRITE_ONCE for 'conf->log'
authorYu Kuai <yukuai3@huawei.com>
Tue, 10 Oct 2023 15:19:41 +0000 (23:19 +0800)
committerSong Liu <song@kernel.org>
Wed, 11 Oct 2023 01:49:49 +0000 (18:49 -0700)
commit06a4d0d8c642b5ea654e832b74dca12965356da0
treeb5cd7c479a32b81fdeb7bdce31658192586e6589
parent617787f1386da5e851dad68926a31522134d352b
md/raid5-cache: use READ_ONCE/WRITE_ONCE for 'conf->log'

'conf->log' is set with 'reconfig_mutex' grabbed, however, readers are
not procted, hence protect it with READ_ONCE/WRITE_ONCE to prevent
reading abnormal values.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20231010151958.145896-3-yukuai1@huaweicloud.com
drivers/md/raid5-cache.c