linux-kernel - Re: [PATCH v4] lib: xarray: free unused spare node in xas_create

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Message-ID: <b2b99877afef36d9c79777846d19beeb14c81159.camel@mpiricsoftware.com>
Date: Wed, 31 Dec 2025 11:59:42 +0530
From: Shardul Bankar <shardul.b@...ricsoftware.com>
To: willy@...radead.org, akpm@...ux-foundation.org, linux-mm@...ck.org
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	dev.jain@....com, david@...nel.org, janak@...ricsoftware.com, 
	shardulsb08@...il.com, tujinjiang@...wei.com
Subject: Re: [PATCH v4] lib: xarray: free unused spare node in
 xas_create_range()

Hi Matthew, Andrew,

Just a gentle ping on this one.

v4 has a Reviewed-by from David, and Dev and Jinjiang both followed up
with additional observations and ideas for related cleanups. As far as
I
can see, there are no outstanding objections to the current xas_nomem()
/
xas_create_range() spare-node fix.

If this looks good to you, could it be queued for inclusion via
whichever
tree you think is appropriate?

The separate question that Jinjiang raised about empty xa_nodes
installed
by xas_create_range() but never populated is being discussed in its own
bug-report thread here:

https://lore.kernel.org/all/86834731-02ba-43ea-9def-8b8ca156ec4a@huawei.com/

Once this patch is accepted/taken, I plan to follow up with a small
cleanup
patch that simplifies the label usage in xas_create_range() along the
lines
David suggested.

Thanks,
Shardul