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-rw-r--r--fs/f2fs/segment.h2
-rw-r--r--fs/f2fs/super.c14
2 files changed, 16 insertions, 0 deletions
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index f11c4bc82c78..dbb774aaf387 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -596,6 +596,8 @@ static inline int utilization(struct f2fs_sb_info *sbi)
#define DEF_MIN_FSYNC_BLOCKS 8
#define DEF_MIN_HOT_BLOCKS 16
+#define SMALL_VOLUME_SEGMENTS (16 * 512) /* 16GB */
+
enum {
F2FS_IPU_FORCE,
F2FS_IPU_SSR,
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 16d157e44184..9b6c53b69535 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -2515,6 +2515,18 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
return 0;
}
+static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
+{
+ struct f2fs_sm_info *sm_i = SM_I(sbi);
+
+ /* adjust parameters according to the volume size */
+ if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
+ sbi->alloc_mode = ALLOC_MODE_REUSE;
+ sm_i->dcc_info->discard_granularity = 1;
+ sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
+ }
+}
+
static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
{
struct f2fs_sb_info *sbi;
@@ -2867,6 +2879,8 @@ skip_recovery:
f2fs_join_shrinker(sbi);
+ f2fs_tuning_parameters(sbi);
+
f2fs_msg(sbi->sb, KERN_NOTICE, "Mounted with checkpoint version = %llx",
cur_cp_version(F2FS_CKPT(sbi)));
f2fs_update_time(sbi, CP_TIME);