linux-kernel - [RFC v2 PATCH 1/3] mm: add PG2KB/KB2PG helper macros

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Message-Id: <20210919131248.489798-2-oleksandr@natalenko.name>
Date:   Sun, 19 Sep 2021 15:12:46 +0200
From:   Oleksandr Natalenko <oleksandr@...alenko.name>
To:     linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Matthew Wilcox <willy@...radead.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Miaohe Lin <linmiaohe@...wei.com>,
        Michal Hocko <mhocko@...nel.org>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        David Laight <David.Laight@...LAB.COM>
Subject: [RFC v2 PATCH 1/3] mm: add PG2KB/KB2PG helper macros

Signed-off-by: Oleksandr Natalenko <oleksandr@...alenko.name>
---
 include/linux/mm.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 00bb2d938df4..0a7e950ac8aa 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -98,6 +98,9 @@ extern int mmap_rnd_compat_bits __read_mostly;
 #include <asm/page.h>
 #include <asm/processor.h>
 
+#define PG2KB(x)	((x) << (PAGE_SHIFT - 10))
+#define KB2PG(x)	((x) >> (PAGE_SHIFT - 10))
+
 /*
  * Architectures that support memory tagging (assigning tags to memory regions,
  * embedding these tags into addresses that point to these memory regions, and
-- 
2.33.0