[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <7217df4e-470b-46ab-a4fc-1d4681256885@suse.de>
Date: Tue, 26 Mar 2024 10:39:02 +0100
From: Hannes Reinecke <hare@...e.de>
To: Matthew Wilcox <willy@...radead.org>,
"Pankaj Raghav (Samsung)" <kernel@...kajraghav.com>
Cc: linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
gost.dev@...sung.com, chandan.babu@...cle.com, mcgrof@...nel.org,
djwong@...nel.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org,
david@...morbit.com, akpm@...ux-foundation.org,
Pankaj Raghav <p.raghav@...sung.com>
Subject: Re: [PATCH v3 04/11] readahead: rework loop in
page_cache_ra_unbounded()
On 3/25/24 19:41, Matthew Wilcox wrote:
> On Wed, Mar 13, 2024 at 06:02:46PM +0100, Pankaj Raghav (Samsung) wrote:
>> @@ -239,8 +239,8 @@ void page_cache_ra_unbounded(struct readahead_control *ractl,
>> * not worth getting one just for that.
>> */
>> read_pages(ractl);
>> - ractl->_index++;
>> - i = ractl->_index + ractl->_nr_pages - index - 1;
>> + ractl->_index += folio_nr_pages(folio);
>> + i = ractl->_index + ractl->_nr_pages - index;
>> continue;
>> }
>>
>> @@ -252,13 +252,14 @@ void page_cache_ra_unbounded(struct readahead_control *ractl,
>> folio_put(folio);
>> read_pages(ractl);
>> ractl->_index++;
>> - i = ractl->_index + ractl->_nr_pages - index - 1;
>> + i = ractl->_index + ractl->_nr_pages - index;
>> continue;
>> }
>
> You changed index++ in the first hunk, but not the second hunk. Is that
> intentional?
Hmm. Looks you are right; it should be modified, too.
Will be fixing it up.
Cheers,
Hannes
Powered by blists - more mailing lists