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authorJaegeuk Kim <jaegeuk@kernel.org>2015-06-19 13:41:23 -0700
committerJaegeuk Kim <jaegeuk@kernel.org>2015-08-04 14:09:55 -0700
commit554df79e523d14dab475eb6650cb96617256ceea (patch)
treeab8c8bbf5febf51534f809ef9df49fecfaf0e4a3 /fs/f2fs/shrinker.c
parent1b38dc8e74a366b92986755c304591e330f3c3e0 (diff)
f2fs: shrink extent_cache entries
This patch registers shrinking extent_caches. Reviewed-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/shrinker.c')
-rw-r--r--fs/f2fs/shrinker.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/fs/f2fs/shrinker.c b/fs/f2fs/shrinker.c
index c4bd6ee5936c..1f0a131be3d2 100644
--- a/fs/f2fs/shrinker.c
+++ b/fs/f2fs/shrinker.c
@@ -23,6 +23,11 @@ static unsigned long __count_nat_entries(struct f2fs_sb_info *sbi)
return NM_I(sbi)->nat_cnt - NM_I(sbi)->dirty_nat_cnt;
}
+static unsigned long __count_extent_cache(struct f2fs_sb_info *sbi)
+{
+ return sbi->total_ext_tree + atomic_read(&sbi->total_ext_node);
+}
+
unsigned long f2fs_shrink_count(struct shrinker *shrink,
struct shrink_control *sc)
{
@@ -42,6 +47,9 @@ unsigned long f2fs_shrink_count(struct shrinker *shrink,
}
spin_unlock(&f2fs_list_lock);
+ /* count extent cache entries */
+ count += __count_extent_cache(sbi);
+
/* shrink clean nat cache entries */
count += __count_nat_entries(sbi);
@@ -82,8 +90,12 @@ unsigned long f2fs_shrink_scan(struct shrinker *shrink,
sbi->shrinker_run_no = run_no;
+ /* shrink extent cache entries */
+ freed += f2fs_shrink_extent_tree(sbi, nr >> 1);
+
/* shrink clean nat cache entries */
- freed += try_to_free_nats(sbi, nr);
+ if (freed < nr)
+ freed += try_to_free_nats(sbi, nr - freed);
spin_lock(&f2fs_list_lock);
p = p->next;