linux-kernel - Re: [PATCH v2 1/4] xen/balloon: fix accounting in alloc_xenballooned

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Message-ID: <7f18eca6-9785-fbff-7870-83024173cb69@suse.com>
Date:   Fri, 24 Jul 2020 15:11:44 +0200
From:   Jürgen Groß <jgross@...e.com>
To:     Roger Pau Monne <roger.pau@...rix.com>,
        linux-kernel@...r.kernel.org
Cc:     stable@...r.kernel.org,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        xen-devel@...ts.xenproject.org
Subject: Re: [PATCH v2 1/4] xen/balloon: fix accounting in
 alloc_xenballooned_pages error path

On 24.07.20 14:42, Roger Pau Monne wrote:
> target_unpopulated is incremented with nr_pages at the start of the
> function, but the call to free_xenballooned_pages will only subtract
> pgno number of pages, and thus the rest need to be subtracted before
> returning or else accounting will be skewed.
> 
> Signed-off-by: Roger Pau Monné <roger.pau@...rix.com>

Reviewed-by: Juergen Gross <jgross@...e.com>


Juergen