linux-kernel - Re: [RFC PATCH 0/7] mm: Make more use of readahead

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Date:   Tue, 1 Sep 2020 09:41:32 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     David Howells <dhowells@...hat.com>
Cc:     willy@...radead.org, linux-fsdevel@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 0/7] mm: Make more use of readahead_control

On Tue, Sep 01, 2020 at 05:28:15PM +0100, David Howells wrote:
> 
> Hi Willy,
> 
> Here's a set of patches to expand the use of the readahead_control struct,
> essentially from do_sync_mmap_readahead() down.  Note that I've been
> passing the number of pages to read in rac->_nr_pages, and then saving it
> and changing it certain points, e.g. page_cache_readahead_unbounded().
> 
> Also pass file_ra_state into force_page_cache_readahead().
> 
> Also there's an apparent minor bug in khugepaged.c that I've included a
> patch for: page_cache_sync_readahead() looks to be given the wrong size in
> collapse_file().
> 

What branch does this apply to?

- Eric