tree 735e01f4251edb9a2eff79a53e0874d3e156c99c
parent 8fe326cb996f89bac50cee2fdb4febfcca6eb297
author Chao Yu <yuchao0@huawei.com> 1518360800 +0800
committer Jaegeuk Kim <jaegeuk@kernel.org> 1520895946 +0900

f2fs: introduce sb_lock to make encrypt pwsalt update exclusive

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>