f2fs: introduce sb_lock to make encrypt pwsalt update exclusive

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f2fs_super_block.encrypt_pw_salt can be udpated and persisted
concurrently, result in getting different pwsalt in separated
threads, so let's introduce sb_lock to exclude concurrent
accessers.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

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Chao Yu 2018-02-11 22:53:20 +08:00 • committed by Jaegeuk Kim

parent 8fe326cb99

commit d0d3f1b329

3 changed files with 14 additions and 8 deletions

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1

fs/f2fs/f2fs.h

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19

fs/f2fs/file.c

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2

fs/f2fs/super.c

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