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>

29 files changed, 29 insertions, 29 deletions

diff --git a/arch/alpha/include/asm/pgtable.h b/arch/alpha/include/asm/pgtable.h
index fce22cf88ee9..a9a119592372 100644
--- a/arch/alpha/include/asm/pgtable.h
+++ b/arch/alpha/include/asm/pgtable.h
@@ -45,7 +45,7 @@ struct vm_area_struct;
 #define PTRS_PER_PMD    (1UL << (PAGE_SHIFT-3))
 #define PTRS_PER_PGD    (1UL << (PAGE_SHIFT-3))
 #define USER_PTRS_PER_PGD       (TASK_SIZE / PGDIR_SIZE)
-#define FIRST_USER_ADDRESS      0
+#define FIRST_USER_ADDRESS      0UL
 
 /* Number of pointers that fit on a page:  this will go away. */
 #define PTRS_PER_PAGE   (1UL << (PAGE_SHIFT-3))
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
 
 
 /****************************************************************
diff --git a/arch/arm/include/asm/pgtable-nommu.h b/arch/arm/include/asm/pgtable-nommu.h
index c35e53ee6663..add094d09e3e 100644
--- a/arch/arm/include/asm/pgtable-nommu.h
+++ b/arch/arm/include/asm/pgtable-nommu.h
@@ -85,7 +85,7 @@ extern unsigned int kobjsize(const void *objp);
 #define VMALLOC_START   0UL
 #define VMALLOC_END     0xffffffffUL
 
-#define FIRST_USER_ADDRESS      (0)
+#define FIRST_USER_ADDRESS      0UL
 
 #include <asm-generic/pgtable.h>
 
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 4c445057169d..3e4d3c43632a 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -45,7 +45,7 @@
 
 #define vmemmap                 ((struct page *)(VMALLOC_END + SZ_64K))
 
-#define FIRST_USER_ADDRESS      0
+#define FIRST_USER_ADDRESS      0UL
 
 #ifndef __ASSEMBLY__
 extern void __pte_error(const char *file, int line, unsigned long val);
diff --git a/arch/avr32/include/asm/pgtable.h b/arch/avr32/include/asm/pgtable.h
index ac7a817e2126..35800664076e 100644
--- a/arch/avr32/include/asm/pgtable.h
+++ b/arch/avr32/include/asm/pgtable.h
@@ -30,7 +30,7 @@
 #define PGDIR_MASK      (~(PGDIR_SIZE-1))
 
 #define USER_PTRS_PER_PGD       (TASK_SIZE / PGDIR_SIZE)
-#define FIRST_USER_ADDRESS      0
+#define FIRST_USER_ADDRESS      0UL
 
 #ifndef __ASSEMBLY__
 extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
diff --git a/arch/cris/include/asm/pgtable.h b/arch/cris/include/asm/pgtable.h
index e824257971c4..ceefc314d64d 100644
--- a/arch/cris/include/asm/pgtable.h
+++ b/arch/cris/include/asm/pgtable.h
@@ -67,7 +67,7 @@ extern void paging_init(void);
  */
 
 #define USER_PTRS_PER_PGD       (TASK_SIZE/PGDIR_SIZE)
-#define FIRST_USER_ADDRESS      0
+#define FIRST_USER_ADDRESS      0UL
 
 /* zero page used for uninitialized stuff */
 #ifndef __ASSEMBLY__
diff --git a/arch/frv/include/asm/pgtable.h b/arch/frv/include/asm/pgtable.h
index c49699d5902d..93bcf2abd1a1 100644
--- a/arch/frv/include/asm/pgtable.h
+++ b/arch/frv/include/asm/pgtable.h
@@ -140,7 +140,7 @@ extern unsigned long empty_zero_page;
 #define PTRS_PER_PTE            4096
 
 #define USER_PGDS_IN_LAST_PML4  (TASK_SIZE / PGDIR_SIZE)
-#define FIRST_USER_ADDRESS      0
+#define FIRST_USER_ADDRESS      0UL
 
 #define USER_PGD_PTRS           (PAGE_OFFSET >> PGDIR_SHIFT)
 #define KERNEL_PGD_PTRS         (PTRS_PER_PGD - USER_PGD_PTRS)
diff --git a/arch/hexagon/include/asm/pgtable.h b/arch/hexagon/include/asm/pgtable.h
index 6e35e71d2aea..49eab8136ec3 100644
--- a/arch/hexagon/include/asm/pgtable.h
+++ b/arch/hexagon/include/asm/pgtable.h
@@ -171,7 +171,7 @@ extern unsigned long _dflt_cache_att;
 extern pgd_t swapper_pg_dir[PTRS_PER_PGD];  /* located in head.S */
 
 /* Seems to be zero even in architectures where the zero page is firewalled? */
-#define FIRST_USER_ADDRESS 0
+#define FIRST_USER_ADDRESS 0UL
 #define pte_special(pte)        0
 #define pte_mkspecial(pte)      (pte)
 
diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h
index 2f07bb3dda91..7b6f8801df57 100644
--- a/arch/ia64/include/asm/pgtable.h
+++ b/arch/ia64/include/asm/pgtable.h
@@ -127,7 +127,7 @@
 #define PTRS_PER_PGD_SHIFT      PTRS_PER_PTD_SHIFT
 #define PTRS_PER_PGD            (1UL << PTRS_PER_PGD_SHIFT)
 #define USER_PTRS_PER_PGD       (5*PTRS_PER_PGD/8)      /* regions 0-4 are user regions */
-#define FIRST_USER_ADDRESS      0
+#define FIRST_USER_ADDRESS      0UL
 
 /*
  * All the normal masks have the "page accessed" bits on, as any time
diff --git a/arch/m32r/include/asm/pgtable.h b/arch/m32r/include/asm/pgtable.h
index 050f7a686e3d..8c1fb902a9ce 100644
--- a/arch/m32r/include/asm/pgtable.h
+++ b/arch/m32r/include/asm/pgtable.h
@@ -53,7 +53,7 @@ extern unsigned long empty_zero_page[1024];
 #define PGDIR_MASK      (~(PGDIR_SIZE - 1))
 
 #define USER_PTRS_PER_PGD       (TASK_SIZE / PGDIR_SIZE)
-#define FIRST_USER_ADDRESS      0
+#define FIRST_USER_ADDRESS      0UL
 
 #ifndef __ASSEMBLY__
 /* Just any arbitrary offset to the start of the vmalloc VM area: the
diff --git a/arch/m68k/include/asm/pgtable_mm.h b/arch/m68k/include/asm/pgtable_mm.h
index 9f5abbda1ea7..28a145bfbb71 100644
--- a/arch/m68k/include/asm/pgtable_mm.h
+++ b/arch/m68k/include/asm/pgtable_mm.h
@@ -66,7 +66,7 @@
 #define PTRS_PER_PGD    128
 #endif
 #define USER_PTRS_PER_PGD       (TASK_SIZE/PGDIR_SIZE)
-#define FIRST_USER_ADDRESS      0
+#define FIRST_USER_ADDRESS      0UL