linux-kernel - [PATCH v2 0/3] NFSD: Fix last write offset handling in layoutcommit

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Message-ID: <20250715153319.37428-1-sergeybashirov@gmail.com>
Date: Tue, 15 Jul 2025 18:32:17 +0300
From: Sergey Bashirov <sergeybashirov@...il.com>
To: Chuck Lever <chuck.lever@...cle.com>,
	Christoph Hellwig <hch@...radead.org>,
	Jeff Layton <jlayton@...nel.org>,
	NeilBrown <neil@...wn.name>,
	Olga Kornievskaia <okorniev@...hat.com>,
	Dai Ngo <Dai.Ngo@...cle.com>,
	Tom Talpey <tom@...pey.com>
Cc: linux-nfs@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Konstantin Evtushenko <koevtushenko@...dex.com>,
	Sergey Bashirov <sergeybashirov@...il.com>
Subject: [PATCH v2 0/3] NFSD: Fix last write offset handling in layoutcommit

These patches correct the behavior of the pNFS server when the client
sends a layoutcommit without a new file size and with zero number of
block/scsi extents.

Tested manually for the pNFS block layout setup.

Signed-off-by: Sergey Bashirov <sergeybashirov@...il.com>
---
Changes in v2:
 - The first cleanup patch is unchanged
 - Reworked main patch to guard entire new_size check, improved description
 - Added cleanup patch to decode lc_newoffset as bool

Sergey Bashirov (3):
  NFSD: Minor cleanup in layoutcommit processing
  NFSD: Fix last write offset handling in layoutcommit
  NFSD: Minor cleanup in layoutcommit decoding

 fs/nfsd/blocklayout.c |  5 ++---
 fs/nfsd/nfs4proc.c    | 34 ++++++++++++++--------------------
 fs/nfsd/nfs4xdr.c     |  2 +-
 3 files changed, 17 insertions(+), 24 deletions(-)

-- 
2.43.0