linux-kernel - Re: [PATCH v2 19/25] netfs: Speed up buffered reading

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Message-ID: <423fbd9101dab18ba772f24db4ab2fecf5de2261.camel@gmail.com>
Date: Mon, 30 Sep 2024 09:46:36 -0700
From: Eduard Zingerman <eddyz87@...il.com>
To: David Howells <dhowells@...hat.com>, Leon Romanovsky <leon@...nel.org>
Cc: Christian Brauner <brauner@...nel.org>, Manu Bretelle
 <chantr4@...il.com>,  asmadeus@...ewreck.org, ceph-devel@...r.kernel.org,
 christian@...uner.io,  ericvh@...nel.org, hsiangkao@...ux.alibaba.com,
 idryomov@...il.com,  jlayton@...nel.org, linux-afs@...ts.infradead.org,
 linux-cifs@...r.kernel.org,  linux-erofs@...ts.ozlabs.org,
 linux-fsdevel@...r.kernel.org,  linux-kernel@...r.kernel.org,
 linux-mm@...ck.org, linux-nfs@...r.kernel.org,  marc.dionne@...istor.com,
 netdev@...r.kernel.org, netfs@...ts.linux.dev,  pc@...guebit.com,
 smfrench@...il.com, sprasad@...rosoft.com, tom@...pey.com, 
 v9fs@...ts.linux.dev, willy@...radead.org
Subject: Re: [PATCH v2 19/25] netfs: Speed up buffered reading

On Mon, 2024-09-30 at 13:51 +0100, David Howells wrote:
> David Howells <dhowells@...hat.com> wrote:
> 
> > Okay, let's try something a little more drastic.  See if we can at least get
> > it booting to the point we can read the tracelog.  If you can apply the
> > attached patch?
> 
> It's also on my branch:
> 
> 	https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=netfs-fixes
> 
> along with another one that clears the folio pointer after unlocking.

Hi David,

dmesg is here:
https://gist.github.com/eddyz87/3a5f2a7ae9ba6803fc46f06223a501fc

Used the following commit from your branch:
ba1659e0f147 ("9p: [DEBUGGING] Don't release pages or folioq structs")

Still does not boot, unfortunately.
Are there any hacks possible to printout tracelog before complete boot somehow?

Thanks,
Eduard