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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2015-02-11 15:26:41 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-11 17:06:03 -0800
commitd016bf7ece53b2b947bfd769e0842fd2feb7556b (patch)
tree2b419f2baa1f9b67f1a3f1b312d7a838bfb0bef0 /arch/arc
parent3ae3ad4e639234a43fd3997887524d2e5345fa76 (diff)
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mm: make FIRST_USER_ADDRESS unsigned long on all archs
LKP has triggered a compiler warning after my recent patch "mm: account pmd page tables to the process": mm/mmap.c: In function 'exit_mmap': >> mm/mmap.c:2857:2: warning: right shift count >= width of type [enabled by default] The code: > 2857 WARN_ON(mm_nr_pmds(mm) > 2858 round_up(FIRST_USER_ADDRESS, PUD_SIZE) >> PUD_SHIFT); In this, on tile, we have FIRST_USER_ADDRESS defined as 0. round_up() has the same type -- int. PUD_SHIFT. I think the best way to fix it is to define FIRST_USER_ADDRESS as unsigned long. On every arch for consistency. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reported-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arc')
-rw-r--r--arch/arc/include/asm/pgtable.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index bdc8ccaf390d..ffed3b2cf313 100644
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -211,7 +211,7 @@
* No special requirements for lowest virtual address we permit any user space
* mapping to be mapped at.
*/
-#define FIRST_USER_ADDRESS 0
+#define FIRST_USER_ADDRESS 0UL
/****************************************************************