From: Daeho Jeong Date: Tue, 7 Oct 2025 16:46:14 +0000 (-0700) Subject: f2fs: set default valid_thresh_ratio to 80 for zoned devices X-Git-Tag: v6.19-rc1~48^2~37 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=81464df36094340395cadc9235e24eb4defa8c43;p=thirdparty%2Flinux.git f2fs: set default valid_thresh_ratio to 80 for zoned devices Zoned storage devices provide marginal over-capacity space, typically around 10%, for filesystem level storage control. By utilizing this extra capacity, we can safely reduce the default 'valid_thresh_ratio' to 80. This action helps to significantly prevent excessive garbage collection (GC) and the resulting power consumption, as the filesystem becomes less aggressive about cleaning segments that still hold a high percentage of valid data. Reviewed-by: Chao Yu Signed-off-by: Daeho Jeong Signed-off-by: Jaegeuk Kim --- diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h index 24e8b1c27acc4..6c4d4567571eb 100644 --- a/fs/f2fs/gc.h +++ b/fs/f2fs/gc.h @@ -25,7 +25,7 @@ #define DEF_GC_THREAD_CANDIDATE_RATIO 20 /* select 20% oldest sections as candidates */ #define DEF_GC_THREAD_MAX_CANDIDATE_COUNT 10 /* select at most 10 sections as candidates */ #define DEF_GC_THREAD_AGE_WEIGHT 60 /* age weight */ -#define DEF_GC_THREAD_VALID_THRESH_RATIO 95 /* do not GC over 95% valid block ratio for one time GC */ +#define DEF_GC_THREAD_VALID_THRESH_RATIO 80 /* do not GC over 80% valid block ratio for one time GC */ #define DEFAULT_ACCURACY_CLASS 10000 /* accuracy class */ #define LIMIT_INVALID_BLOCK 40 /* percentage over total user space */