linux-kernel - Re: [PATCH v4 2/5] mm/cma: add cma_pages_valid to determine if pages are in CMA

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Message-ID: <YV/5EpBcte5i0hzT@localhost.localdomain>
Date:   Fri, 8 Oct 2021 09:53:54 +0200
From:   Oscar Salvador <osalvador@...e.de>
To:     Mike Kravetz <mike.kravetz@...cle.com>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        David Hildenbrand <david@...hat.com>,
        Michal Hocko <mhocko@...e.com>, Zi Yan <ziy@...dia.com>,
        Muchun Song <songmuchun@...edance.com>,
        Naoya Horiguchi <naoya.horiguchi@...ux.dev>,
        David Rientjes <rientjes@...gle.com>,
        "Aneesh Kumar K . V" <aneesh.kumar@...ux.ibm.com>,
        Nghia Le <nghialm78@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v4 2/5] mm/cma: add cma_pages_valid to determine if pages
 are in CMA

On Thu, Oct 07, 2021 at 11:19:15AM -0700, Mike Kravetz wrote:
> Add new interface cma_pages_valid() which indicates if the specified
> pages are part of a CMA region.  This interface will be used in a
> subsequent patch by hugetlb code.
> 
> In order to keep the same amount of DEBUG information, a pr_debug() call
> was added to cma_pages_valid().  In the case where the page passed to
> cma_release is not in cma region, the debug message will be printed from
> cma_pages_valid as opposed to cma_release.
> 
> Signed-off-by: Mike Kravetz <mike.kravetz@...cle.com>
> Acked-by: David Hildenbrand <david@...hat.com>

Reviewed-by: OScar Salvador <osalvador@...e.de>


-- 
Oscar Salvador
SUSE Labs