From 98e92867b99761979f6d4c155b7d5a5b523412a3 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Fri, 18 Mar 2022 17:02:30 +0800 Subject: [PATCH] f2fs: use aggressive GC policy during f2fs_disable_checkpoint() Let's enable GC_URGENT_HIGH mode during f2fs_disable_checkpoint(), so that we can use SSR allocator for GCed data/node persistence, it can improve the performance due to it avoiding migration of data/node locates in selected target segment of SSR allocator. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/super.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 9176597fdf94..caceb80b87ec 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -2080,6 +2080,7 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) { unsigned int s_flags = sbi->sb->s_flags; struct cp_control cpc; + unsigned int gc_mode; int err = 0; int ret; block_t unusable; @@ -2092,6 +2093,9 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) f2fs_update_time(sbi, DISABLE_TIME); + gc_mode = sbi->gc_mode; + sbi->gc_mode = GC_URGENT_HIGH; + while (!f2fs_time_over(sbi, DISABLE_TIME)) { f2fs_down_write(&sbi->gc_lock); err = f2fs_gc(sbi, true, false, false, NULL_SEGNO); @@ -2129,6 +2133,7 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) out_unlock: f2fs_up_write(&sbi->gc_lock); restore_flag: + sbi->gc_mode = gc_mode; sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ return err; }