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From: Christoph Hellwig <hch@lst.de>
To: Jeff Layton <jlayton@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>,
	Chuck Lever <chuck.lever@oracle.com>,
	Amir Goldstein <amir73il@gmail.com>, NeilBrown <neil@brown.name>,
	Olga Kornievskaia <okorniev@redhat.com>,
	Dai Ngo <Dai.Ngo@oracle.com>, Tom Talpey <tom@talpey.com>,
	linux-nfs@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 1/4] nfsd/blocklayout: always ignore loca_time_modify
Date: Wed, 1 Apr 2026 16:25:14 +0200	[thread overview]
Message-ID: <20260401142514.GA22685@lst.de> (raw)
In-Reply-To: <47bf9653ce304f973cef6248e10a7dba4d958140.camel@kernel.org>

On Tue, Mar 31, 2026 at 01:09:28PM -0400, Jeff Layton wrote:
> >  	iattr.ia_valid |= ATTR_ATIME | ATTR_CTIME | ATTR_MTIME;
> > -	iattr.ia_atime = iattr.ia_ctime = iattr.ia_mtime = lcp->lc_mtime;
> > +	iattr.ia_atime = iattr.ia_ctime = iattr.ia_mtime = current_time(inode);
> 
> Technically, these fields are completely ignored by notify_change,
> unless their counterpart ATTR_?TIME_SET flag is set, so you could just
> leave them unset.

We're not actually going through notify_change here, so for now we'll
need this assignment for non-mgtime file systems.

Btw, shouldn't we move the actual time sampling from notify_change into
->setattr for non-mgtime file systems to avoid the extra sampling in
notify_change for the mgtime fast path?


  reply	other threads:[~2026-04-01 14:25 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-31 15:33 cleanup block-style layouts exports Christoph Hellwig
2026-03-31 15:33 ` [PATCH 1/4] nfsd/blocklayout: always ignore loca_time_modify Christoph Hellwig
2026-03-31 17:09   ` Jeff Layton
2026-04-01 14:25     ` Christoph Hellwig [this message]
2026-03-31 15:33 ` [PATCH 2/4] exportfs: split out the ops for layout-based block device access Christoph Hellwig
2026-03-31 17:24   ` Jeff Layton
2026-04-01 14:27     ` Christoph Hellwig
2026-03-31 18:07   ` Chuck Lever
2026-04-01  6:23     ` Christoph Hellwig
2026-03-31 15:33 ` [PATCH 3/4] exportfs: don't pass struct iattr to ->commit_blocks Christoph Hellwig
2026-03-31 17:26   ` Jeff Layton
2026-03-31 17:30     ` Chuck Lever
2026-03-31 17:33       ` Jeff Layton
2026-04-01  6:24         ` Christoph Hellwig
2026-03-31 15:33 ` [PATCH 4/4] exportfs,nfsd: rework checking for layout-based block device access support Christoph Hellwig
2026-03-31 17:52   ` Jeff Layton
2026-03-31 18:00   ` Chuck Lever
2026-03-31 17:33 ` cleanup block-style layouts exports Chuck Lever
2026-04-01  6:19   ` Christoph Hellwig
2026-04-01 13:39     ` Chuck Lever
  -- strict thread matches above, loose matches on Subject: below --
2026-04-01 14:40 cleanup block-style layouts exports v2 Christoph Hellwig
2026-04-01 14:40 ` [PATCH 1/4] nfsd/blocklayout: always ignore loca_time_modify Christoph Hellwig
2026-04-23 18:15 [PATCH 0/4] cleanup block-style layouts exports v3 Chuck Lever
2026-04-23 18:15 ` [PATCH 1/4] nfsd/blocklayout: always ignore loca_time_modify Chuck Lever

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