evie/android_kernel_oneplus_msm8998
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f2fs: delay awaking discard thread

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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 <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2017-04-25 00:21:34 +08:00 • committed by Jaegeuk Kim
parent 9933f6e186
commit e7a9ce2e7c
1 changed files with 2 additions and 1 deletions
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3
fs/f2fs/segment.c
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@ -1047,7 +1047,6 @@ static int __queue_discard_cmd(struct f2fs_sb_info *sbi,
blkstart -= FDEV(devi).start_blk; blkstart -= FDEV(devi).start_blk;
} }
__update_discard_tree_range(sbi, bdev, lblkstart, blkstart, blklen); __update_discard_tree_range(sbi, bdev, lblkstart, blkstart, blklen);
wake_up(&SM_I(sbi)->dcc_info->discard_wait_queue);
return 0; return 0;
} }
@ -1414,6 +1413,8 @@ skip:
SM_I(sbi)->dcc_info->nr_discards -= total_len; SM_I(sbi)->dcc_info->nr_discards -= total_len;
kmem_cache_free(discard_entry_slab, entry); 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) static int create_discard_cmd_control(struct f2fs_sb_info *sbi)