tree 36a905fc9badb003d76fd36342f98ad33dfaf7ec
parent 32c0fec1aa85f1a9aebfd9445208f4223bcd96e8
author Daeho Jeong <daehojeong@google.com> 1599533050 +0900
committer Jaegeuk Kim <jaegeuk@kernel.org> 1599847886 -0700

f2fs: change i_compr_blocks of inode to atomic value

writepages() can be concurrently invoked for the same file by different
threads such as a thread fsyncing the file and a kworker kernel thread.
So, changing i_compr_blocks without protection is racy and we need to
protect it by changing it with atomic type value. Plus, we don't need
a 64bit value for i_compr_blocks, so just we will use a atomic value,
not atomic64.

Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>