From 9e073e4657b69bcbf7a6bb009b9c6390e7c0600a Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Tue, 25 Apr 2017 00:21:34 +0800 Subject: [PATCH] f2fs: delay awaking discard thread It's better to delay awaking discard thread while queuing discard commands in checkpoint, it will help to give more chances for merging big and small discard. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/segment.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 45da59b720350..b27ae5f6a87f1 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -968,7 +968,6 @@ static int __queue_discard_cmd(struct f2fs_sb_info *sbi, blkstart -= FDEV(devi).start_blk; } __update_discard_tree_range(sbi, bdev, lblkstart, blkstart, blklen); - wake_up(&SM_I(sbi)->dcc_info->discard_wait_queue); return 0; } @@ -1335,6 +1334,8 @@ skip: SM_I(sbi)->dcc_info->nr_discards -= total_len; kmem_cache_free(discard_entry_slab, entry); } + + wake_up(&SM_I(sbi)->dcc_info->discard_wait_queue); } static int create_discard_cmd_control(struct f2fs_sb_info *sbi) -- 2.39.5