Re: [PATCH 5/5] xfs: reverse search directory freespace indexes

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On Thu, Aug 29, 2019 at 04:30:42PM +1000, Dave Chinner wrote:
> 		create time(sec) / rate (files/s)
>  File count     vanilla             Prev commit		Patched
>   10k	      0.41 / 24.3k	   0.42 / 23.8k       0.41 / 24.3k
>   20k	      0.74 / 27.0k	   0.76 / 26.3k       0.75 / 26.7k
>  100k	      3.81 / 26.4k	   3.47 / 28.8k       3.27 / 30.6k
>  200k	      8.58 / 23.3k	   7.19 / 27.8k       6.71 / 29.8k
>    1M	     85.69 / 11.7k	  48.53 / 20.6k      37.67 / 26.5k
>    2M	    280.31 /  7.1k	 130.14 / 15.3k      79.55 / 25.2k
>   10M	   3913.26 /  2.5k                          552.89 / 18.1k

Impressive!

> Signed-Off-By: Dave Chinner <dchinner@xxxxxxxxxx>

FYI, the Off here should be all lower case.  Patch 2 actually has the
same issue, but I only noticed it here.

> @@ -1781,6 +1782,9 @@ xfs_dir2_node_find_freeblk(
>  		 */
>  		ifbno = fblk->blkno;
>  		fbno = ifbno;
> +		xfs_trans_brelse(tp, fbp);
> +		fbp = NULL;
> +		fblk->bp = NULL;

Hmm.  Doesn't this actually belong into the previous patch?



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