Commit 2880f47b authored by Weichao Guo's avatar Weichao Guo Committed by Jaegeuk Kim
Browse files

f2fs: skip GC if possible when checkpoint disabling 



If the number of unusable blocks is not larger than
unusable capacity, we can skip GC when checkpoint
disabling.

Signed-off-by: default avatarWeichao Guo <guoweichao@oppo.com>
Signed-off-by: default avatarChao Yu <chao@kernel.org>
[Jaegeuk Kim: Fix missing gc_mode assignment]
Reviewed-by: default avatarChao Yu <chao@kernel.org>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 71419129

fs/f2fs/super.c

+7 −2
Original line number Diff line number Diff line
@@ -2058,7 +2058,7 @@ 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;

	unsigned int gc_mode = sbi->gc_mode;

	int err = 0;

	int ret;

	block_t unusable;
@@ -2069,9 +2069,13 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) 
	}

	sbi->sb->s_flags |= SB_ACTIVE;



	/* check if we need more GC first */

	unusable = f2fs_get_unusable_blocks(sbi);

	if (!f2fs_disable_cp_again(sbi, unusable))

		goto skip_gc;



	f2fs_update_time(sbi, DISABLE_TIME);



	gc_mode = sbi->gc_mode;

	sbi->gc_mode = GC_URGENT_HIGH;



	while (!f2fs_time_over(sbi, DISABLE_TIME)) {
@@ -2097,6 +2101,7 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) 
		goto restore_flag;

	}



skip_gc:

	f2fs_down_write(&sbi->gc_lock);

	cpc.reason = CP_PAUSE;

	set_sbi_flag(sbi, SBI_CP_DISABLED);