linux-kernel - [PATCH][trivial] mm/pagewalk.c break const constraint.

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Message-Id: <20080419181759.A8EB.KOSAKI.MOTOHIRO@jp.fujitsu.com>
Date:	Sat, 19 Apr 2008 18:26:28 +0900
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Matt Mackall <mpm@...enic.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	kosaki.motohiro@...fujitsu.com
Subject: [PATCH][trivial] mm/pagewalk.c break const constraint.

patch against 2.6.25

when compile 2.6.25, following warnings was outputed.

  CC      mm/pagewalk.o
mm/pagewalk.c: In function 'walk_page_range':
mm/pagewalk.c:111: warning: passing argument 1 of 'pgd_offset' discards qualifiers from p\
ointer target type

mm argument of walk_page_range() is unnecessary const restriction. 
this patch is no functional change. it's only remove warning.

Thanks!


Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
CC: Matt Mackall <mpm@...enic.com>

---
 include/linux/mm.h |    2 +-
 mm/pagewalk.c      |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

Index: b/mm/pagewalk.c
===================================================================
--- a/mm/pagewalk.c     2008-04-19 17:46:34.000000000 +0900
+++ b/mm/pagewalk.c     2008-04-19 18:43:58.000000000 +0900
@@ -97,7 +97,7 @@ static int walk_pud_range(pgd_t *pgd, un
  * If any callback returns a non-zero value, the walk is aborted and
  * the return value is propagated back to the caller. Otherwise 0 is returned.
  */
-int walk_page_range(const struct mm_struct *mm,
+int walk_page_range(struct mm_struct *mm,
                    unsigned long addr, unsigned long end,
                    const struct mm_walk *walk, void *private)
 {
Index: b/include/linux/mm.h
===================================================================
--- a/include/linux/mm.h        2008-04-19 17:46:12.000000000 +0900
+++ b/include/linux/mm.h        2008-04-19 18:44:14.000000000 +0900
@@ -746,7 +746,7 @@ struct mm_walk {
        int (*pte_hole)(unsigned long, unsigned long, void *);
 };

-int walk_page_range(const struct mm_struct *, unsigned long addr,
+int walk_page_range(struct mm_struct *, unsigned long addr,
                    unsigned long end, const struct mm_walk *walk,
                    void *private);
 void free_pgd_range(struct mmu_gather **tlb, unsigned long addr,





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