Re: [PATCH stable 5.15] xfs: remove incorrect ASSERT in xfs_rename

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From:   "Darrick J. Wong" <djwong@xxxxxxxxxx>
Date:   Fri, 8 Jul 2022 08:55:57 -0700
> On Fri, Jul 08, 2022 at 08:54:13AM -0700, Darrick J. Wong wrote:
> > On Thu, Jul 07, 2022 at 03:58:35PM -0700, Kuniyuki Iwashima wrote:
> > > From: Eric Sandeen <sandeen@xxxxxxxxxx>
> > > 
> > > commit e445976537ad139162980bee015b7364e5b64fff upstream.
> > > 
> > > Ayushman Dutta reported our 5.10 kernel hit the warning.  It was because
> > > the original commit misses a Fixes tag and was not backported to the stable
> > > tree.  The fix is merged in 5.16, so please backport it to 5.15 first.
> > > 
> > > This ASSERT in xfs_rename is a) incorrect, because
> > > (RENAME_WHITEOUT|RENAME_NOREPLACE) is a valid combination, and
> > > b) unnecessary, because actual invalid flag combinations are already
> > > handled at the vfs level in do_renameat2() before we get called.
> > > So, remove it.
> > > 
> > > Reported-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> > > Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
> > > Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>
> > > Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
> > > Fixes: 7dcf5c3e4527 ("xfs: add RENAME_WHITEOUT support")
> > > Reported-by: Ayushman Dutta <ayudutta@xxxxxxxxxx>
> > > Signed-off-by: Kuniyuki Iwashima <kuniyu@xxxxxxxxxx>
> > 
> > Looks good to me, but you really ought to send 5.10 patches to the 5.10
> > XFS maintainer (Amir, now cc'd).  (Yes, this is a recent change.) ;)
> 
> ...and of course the first thing that happens is that I mix up the 5.10
> and 5.15 patches.
> 
> Amir is the 5.10 maintainer, Leah is the 5.15 maintainer.  Sorry about
> the mixup.  /me pours himself a third(!) cup of coffee.

Thank you for taking a look!

And sorry that I'm not familiar with xfs workflow and didn't know each
version has dedicated maintainers.

Is there a doc like Documentation/process/maintainer-netdev.rst as both of
Amir and Leah seem not listed in the xfs entry of MAINTAINERS...?



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