From d618ebaf0aa83d175658aea5291e0c459d471d39 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Tue, 25 Apr 2017 00:21:35 +0800 Subject: f2fs: enable small discard by default This patch start to enable 4K granularity small discard by default when realtime discard is on, so, in seriously fragmented space, small size discard can be issued in time to avoid useless storage space occupying of invalid filesystem's data, then performance of flash storage can be recovered. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/segment.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/f2fs/segment.c') diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index b27ae5f6a87f..7ded7da5b7cb 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -1362,7 +1362,7 @@ static int create_discard_cmd_control(struct f2fs_sb_info *sbi) atomic_set(&dcc->issing_discard, 0); atomic_set(&dcc->discard_cmd_cnt, 0); dcc->nr_discards = 0; - dcc->max_discards = 0; + dcc->max_discards = MAIN_SEGS(sbi) << sbi->log_blocks_per_seg; dcc->undiscard_blks = 0; dcc->root = RB_ROOT; -- cgit v1.2.3