tree fbe94197453a9abcc48f781d6fcdd7977ae5acde
parent 0108c481d7afc746dd6550024ad1e248eaca6bda
author Chao Yu <yuchao0@huawei.com> 1509356993 +0800
committer Jaegeuk Kim <jaegeuk@kernel.org> 1510812674 -0800

f2fs: use rw_semaphore to protect SIT cache

There are some cases user didn't update SIT cache under this lock,
so let's use rw_semaphore instead of mutex to enhance concurrently
accessing.

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