From 34e159da418be46986456daf21a339932f349b63 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 45da59b..b27ae5f 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) -- 2.7.4