From: Chao Yu <[email protected]> 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 <[email protected]> --- 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 d4bda1e54475..8097b4c8c7c7 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -971,7 +971,6 @@ 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; } @@ -1338,6 +1337,8 @@ void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc) 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) -- 2.12.2.575.gb14f27f
