Re: [PATCH 6.12 162/466] Revert "readahead: properly shorten readahead when falling back to do_page_cache_ra()"

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On Thu 12-12-24 10:12:54, Philippe Troin wrote:
> On Thu, 2024-12-12 at 15:55 +0100, Greg Kroah-Hartman wrote:
> > 6.12-stable review patch.  If anyone has any objections, please let
> > me know.
> > 
> > ------------------
> > 
> > From: Jan Kara <jack@xxxxxxx>
> > 
> > commit a220d6b95b1ae12c7626283d7609f0a1438e6437 upstream.
> > 
> > This reverts commit 7c877586da3178974a8a94577b6045a48377ff25.
> 
> Isn't that moot now with 0938b1614648d5fbd832449a5a8a1b51d985323d that
> in Linus's tree? It's not in 6.12 (yet?).
> It may be worth backporting 0938b1614 to the stable tree, but it's
> beyond my pay grade.

Hum, I don't think it is moot. Due to the change this commit reverts, we
could have been calling page_cache_ra_unbounded() with huge nr_to_read
value. I don't see how upstream commit 0938b1614648d5fb helps dealing with
that...

								Honza
-- 
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR




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