Re: [PATCH 0/3] NFS: Disable READ_PLUS by default

["Mkrtchyan, Tigran" <tigran.mkrtchyan@desy.de>]

Hi Anna,

I see problems with gedeviceinfo and bisected it to c567552612ece787b178e3b147b5854ad422a836.
The commit itself doesn't look that can break it, but might
be can help you find the problem.

What I see, that after xdr_read_pages call the xdr stream points
to a some random point (or wrong page)

Regards,
   Tigran.


----- Original Message -----
> From: "schumaker anna" <schumaker.anna@gmail.com>
> To: "linux-nfs" <linux-nfs@vger.kernel.org>
> Cc: "Anna Schumaker" <Anna.Schumaker@Netapp.com>
> Sent: Thursday, 3 December, 2020 21:18:38
> Subject: [PATCH 0/3] NFS: Disable READ_PLUS by default

> From: Anna Schumaker <Anna.Schumaker@Netapp.com>
> 
> I've been scratching my head about what's going on with xfstests generic/091
> and generic/263, but I'm not sure what else to look at at this point.
> This patchset disables READ_PLUS by default by marking it as a
> developer-only kconfig option.
> 
> I also included a couple of patches fixing some other issues that were
> noticed while inspecting the code. These patches don't help the tests
> pass, but they do fail later on after applying so it does feel like
> progress.
> 
> I'm hopeful the remaning issues can be worked out in the future.
> 
> Thanks,
> Anna
> 
> 
> Anna Schumaker (3):
>  NFS: Disable READ_PLUS by default
>  NFS: Allocate a scratch page for READ_PLUS
>  SUNRPC: Keep buf->len in sync with xdr->nwords when expanding holes
> 
> fs/nfs/Kconfig          |  9 +++++++++
> fs/nfs/nfs42xdr.c       |  2 ++
> fs/nfs/nfs4proc.c       |  2 +-
> fs/nfs/read.c           | 13 +++++++++++--
> include/linux/nfs_xdr.h |  1 +
> net/sunrpc/xdr.c        |  3 ++-
> 6 files changed, 26 insertions(+), 4 deletions(-)
> 
> --
> 2.29.2