From 1b38dc8e74a366b92986755c304591e330f3c3e0 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Fri, 19 Jun 2015 15:36:07 -0700 Subject: f2fs: shrink nat_cache entries This patch registers shrinking nat_cache entries. Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/shrinker.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'fs/f2fs/shrinker.c') diff --git a/fs/f2fs/shrinker.c b/fs/f2fs/shrinker.c index 16e9b43635c2..c4bd6ee5936c 100644 --- a/fs/f2fs/shrinker.c +++ b/fs/f2fs/shrinker.c @@ -18,6 +18,11 @@ static LIST_HEAD(f2fs_list); static DEFINE_SPINLOCK(f2fs_list_lock); static unsigned int shrinker_run_no; +static unsigned long __count_nat_entries(struct f2fs_sb_info *sbi) +{ + return NM_I(sbi)->nat_cnt - NM_I(sbi)->dirty_nat_cnt; +} + unsigned long f2fs_shrink_count(struct shrinker *shrink, struct shrink_control *sc) { @@ -37,7 +42,8 @@ unsigned long f2fs_shrink_count(struct shrinker *shrink, } spin_unlock(&f2fs_list_lock); - /* TODO: count # of objects */ + /* shrink clean nat cache entries */ + count += __count_nat_entries(sbi); spin_lock(&f2fs_list_lock); p = p->next; @@ -76,7 +82,8 @@ unsigned long f2fs_shrink_scan(struct shrinker *shrink, sbi->shrinker_run_no = run_no; - /* TODO: shrink caches */ + /* shrink clean nat cache entries */ + freed += try_to_free_nats(sbi, nr); spin_lock(&f2fs_list_lock); p = p->next; -- cgit v1.2.3