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Date: Thu, 22 Jan 2026 23:26:16 +0000
From: Jaegeuk Kim <jaegeuk@kernel.org>
To: Christoph Hellwig <hch@infradead.org>
Cc: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net,
	Matthew Wilcox <willy@infradead.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-fsdevel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 1/2] f2fs: improve readahead for POSIX_FADV_WILLNEED
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References: <20251121014202.1969909-1-jaegeuk@kernel.org>
 <aSALfvLUObUGSx-e@infradead.org>
 <aSCpzRW8mUhNnjHB@google.com>
 <aXHhFN-feFYFcKYu@infradead.org>
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In-Reply-To: <aXHhFN-feFYFcKYu@infradead.org>

On 01/22, Christoph Hellwig wrote:
> On Fri, Nov 21, 2025 at 06:05:01PM +0000, Jaegeuk Kim wrote:
> > On 11/20, Christoph Hellwig wrote:
> > > On Fri, Nov 21, 2025 at 01:42:01AM +0000, Jaegeuk Kim wrote:
> > > > This patch boosts readahead for POSIX_FADV_WILLNEED.
> > > 
> > > How?  That's not a good changelog.
> > > 
> > > Also open coding the read-ahead logic is not a good idea.  The only
> > > f2fs-specific bits are the compression check, and the extent precaching,
> > > but you surely should be able to share a read-ahead helper with common
> > > code instead of duplicating the logic.
> > 
> > Ok, let me try to write up and post a generic version of the changes.
> 
> Did this go anywhere?

Here.

https://lore.kernel.org/lkml/20251202013212.964298-1-jaegeuk@kernel.org/