linux-kernel - [PATCH 1/2] mm: Move lru_to

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Date:   Thu, 29 Nov 2018 09:52:56 +0200
From:   Nikolay Borisov <nborisov@...e.com>
To:     linux-kernel@...r.kernel.org
Cc:     Nikolay Borisov <nborisov@...e.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Matthew Wilcox <willy@...radead.org>,
        Michal Hocko <mhocko@...e.com>,
        Dan Williams <dan.j.williams@...el.com>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Pavel Tatashin <pasha.tatashin@...cle.com>,
        Souptick Joarder <jrdr.linux@...il.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Keith Busch <keith.busch@...el.com>,
        Tony Luck <tony.luck@...el.com>,
        Ingo Molnar <mingo@...nel.org>, linux-mm@...ck.org
Subject: [PATCH 1/2] mm: Move lru_to_page to mm.h

There are multiple places in the kernel which opencode this helper,
this patch moves it to the more generic mm.h header in preparation for
using it. No functional changes.

Signed-off-by: Nikolay Borisov <nborisov@...e.com>
---
 include/linux/mm.h        | 2 ++
 include/linux/mm_inline.h | 3 ---
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 5411de93a363..47b4aa5bba93 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -146,6 +146,8 @@ extern int overcommit_kbytes_handler(struct ctl_table *, int, void __user *,
 /* test whether an address (unsigned long or pointer) is aligned to PAGE_SIZE */
 #define PAGE_ALIGNED(addr)	IS_ALIGNED((unsigned long)(addr), PAGE_SIZE)
 
+#define lru_to_page(head) (list_entry((head)->prev, struct page, lru))
+
 /*
  * Linux kernel virtual memory manager primitives.
  * The idea being to have a "virtual" mm in the same way
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
index 10191c28fc04..04ec454d44ce 100644
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -124,7 +124,4 @@ static __always_inline enum lru_list page_lru(struct page *page)
 	}
 	return lru;
 }
-
-#define lru_to_page(head) (list_entry((head)->prev, struct page, lru))
-
 #endif
-- 
2.17.1