Re: [PATCH 4/5] mm: Use radix_tree_iter_retry()

[Matthew Wilcox <willy@linux.intel.com>]

On Fri, Jan 29, 2016 at 03:45:59PM +0100, Vlastimil Babka wrote:
> This should be applied on top. There are no restarts anymore.

Quite right.  Sorry I missed the comment.

Acked-by: Matthwe Wilcox <willy@linux.intel.com>

> ----8<----
> >From 3b0bdd370b57fb6d83b213e140cd1fb0e8962af8 Mon Sep 17 00:00:00 2001
> From: Vlastimil Babka <vbabka@suse.cz>
> Date: Fri, 29 Jan 2016 15:41:31 +0100
> Subject: [PATCH] mm: Use radix_tree_iter_retry()-fix
> 
> Remove now-obsolete-and-misleading comment.
> 
> Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
> ---
>  mm/shmem.c | 5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/mm/shmem.c b/mm/shmem.c
> index 8f89abd4eaee..4d758938340c 100644
> --- a/mm/shmem.c
> +++ b/mm/shmem.c
> @@ -382,11 +382,6 @@ unsigned long shmem_partial_swap_usage(struct address_space *mapping,
>  
>  		page = radix_tree_deref_slot(slot);
>  
> -		/*
> -		 * This should only be possible to happen at index 0, so we
> -		 * don't need to reset the counter, nor do we risk infinite
> -		 * restarts.
> -		 */
>  		if (radix_tree_deref_retry(page)) {
>  			slot = radix_tree_iter_retry(&iter);
>  			continue;
> -- 
> 2.7.0
> 
> 

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