f2fs: wake up discard_thread iff there is a candidate
authorJaegeuk Kim <jaegeuk@kernel.org>
Wed, 23 Aug 2017 04:15:43 +0000 (21:15 -0700)
committerJaegeuk Kim <jaegeuk@kernel.org>
Tue, 29 Aug 2017 17:05:33 +0000 (10:05 -0700)
commit01983c715ad0e78842a885f361ad927a3a985994
treedd8995b6626b9b423bcf2e7170f85d55879e65f7
parentadb6dc197187e2a5f5a7bed01e722f46a58676af
f2fs: wake up discard_thread iff there is a candidate

This patch fixes to avoid needless wake ups.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
fs/f2fs/segment.c
fs/f2fs/segment.h
fs/f2fs/sysfs.c