Commit 98e92867 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
Browse files

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: default avatarChao Yu <chao.yu@oppo.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 9b56adcf

fs/f2fs/super.c

+5 −0
Original line number Diff line number Diff line
@@ -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;

}