From b0af6d491a6b5f5622fa91ac75f34f3640f862c4 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Wed, 2 Aug 2017 23:21:48 +0800 Subject: f2fs: add app/fs io stat This patch enables inner app/fs io stats and introduces below virtual fs nodes for exposing stats info: /sys/fs/f2fs//iostat_enable /proc/fs/f2fs//iostat_info Signed-off-by: Chao Yu [Jaegeuk Kim: fix wrong stat assignment] Signed-off-by: Jaegeuk Kim --- fs/f2fs/super.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'fs/f2fs/super.c') diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index b84367856f8e..ca340d84f8c2 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -2056,6 +2056,10 @@ try_onemore: set_sbi_flag(sbi, SBI_POR_DOING); spin_lock_init(&sbi->stat_lock); + /* init iostat info */ + spin_lock_init(&sbi->iostat_lock); + sbi->iostat_enable = false; + for (i = 0; i < NR_PAGE_TYPE; i++) { int n = (i == META) ? 1: NR_TEMP_TYPE; int j; -- cgit v1.2.3