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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Linus Torvalds <torvalds@linux-foundation.org>, Willy Tarreau <w@1wt.eu>
Cc: "Alex Xu (Hello71)" <alex_y_xu@yahoo.ca>,
	stable <stable@vger.kernel.org>
Subject: Re: FAILED: patch "[PATCH] pipe: increase minimum default pipe size to 2 pages" failed to apply to 4.4-stable tree
Date: Mon, 9 Aug 2021 18:27:39 +0200	[thread overview]
Message-ID: <YRFXe06Eih48qlD7@kroah.com> (raw)
In-Reply-To: <CAHk-=wg9Ar-XBVQ860-TLA-eo8N=UYO8DQ5Ye0rBBuiwzv_N_A@mail.gmail.com>

On Mon, Aug 09, 2021 at 09:23:00AM -0700, Linus Torvalds wrote:
> On Mon, Aug 9, 2021 at 2:52 AM <gregkh@linuxfoundation.org> wrote:
> >
> > The patch below does not apply to the 4.4-stable tree.
> 
> It shouldn't.
> 
> The pipe buffer accounting and soft limits that introduced the whole
> "limp along with limited pipe buffers" behavior that this fixes was
> introduced by
> 
> > Fixes: 759c01142a ("pipe: limit the per-user amount of pages allocated in pipes")
> 
> ..which made it into 4.5.
> 
> So 4.4 is unaffected and doesn't want this patch.

But that commit showed up in 4.4.13 as fa6d0ba12a8e ("pipe: limit the
per-user amount of pages allocated in pipes") which is why I asked about
this.  The code didn't look similar at all, so I couldn't easily figure
out the backport myself :(

Willy, any ideas?

thanks,

greg k-h

  reply	other threads:[~2021-08-09 16:27 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-09  9:52 FAILED: patch "[PATCH] pipe: increase minimum default pipe size to 2 pages" failed to apply to 4.4-stable tree gregkh
2021-08-09 16:23 ` Linus Torvalds
2021-08-09 16:27   ` Greg Kroah-Hartman [this message]
2021-08-09 16:36     ` Linus Torvalds
2021-08-09 16:46       ` Linus Torvalds
2021-08-09 17:40         ` Greg Kroah-Hartman
2021-08-09 19:04           ` Willy Tarreau
2021-08-10  6:54             ` Greg Kroah-Hartman
2021-08-10  8:39               ` Willy Tarreau
2021-08-09 16:51     ` Alex Xu (Hello71)
2021-08-09 16:57       ` Willy Tarreau

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