mm: remove double indirection on tlb parameter to free_pgd_range() & Co

The double indirection here is not needed anywhere and hence (at least)
confusing.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 files changed, 26 insertions, 21 deletions

diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c
index d3ce8f3bcaa6..cd49e2860eef 100644
--- a/arch/ia64/mm/hugetlbpage.c
+++ b/arch/ia64/mm/hugetlbpage.c
@@ -112,7 +112,7 @@ follow_huge_pmd(struct mm_struct *mm, unsigned long address, pmd_t *pmd, int wri
         return NULL;
 }
 
-void hugetlb_free_pgd_range(struct mmu_gather **tlb,
+void hugetlb_free_pgd_range(struct mmu_gather *tlb,
                         unsigned long addr, unsigned long end,
                         unsigned long floor, unsigned long ceiling)
 {
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 0d12fba31bc5..1a96cc891cf5 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -255,7 +255,7 @@ static void hugetlb_free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
  *
  * Must be called with pagetable lock held.
  */
-void hugetlb_free_pgd_range(struct mmu_gather **tlb,
+void hugetlb_free_pgd_range(struct mmu_gather *tlb,
                             unsigned long addr, unsigned long end,
                             unsigned long floor, unsigned long ceiling)
 {
@@ -315,13 +315,13 @@ void hugetlb_free_pgd_range(struct mmu_gather **tlb,
                 return;
 
         start = addr;
-        pgd = pgd_offset((*tlb)->mm, addr);
+        pgd = pgd_offset(tlb->mm, addr);
         do {
-                BUG_ON(get_slice_psize((*tlb)->mm, addr) != mmu_huge_psize);
+                BUG_ON(get_slice_psize(tlb->mm, addr) != mmu_huge_psize);
                 next = pgd_addr_end(addr, end);
                 if (pgd_none_or_clear_bad(pgd))
                         continue;
-                hugetlb_free_pud_range(*tlb, pgd, addr, next, floor, ceiling);
+                hugetlb_free_pud_range(tlb, pgd, addr, next, floor, ceiling);
         } while (pgd++, addr = next, addr != end);
 }
 
diff --git a/fs/exec.c b/fs/exec.c
index fd9234379e8d..190ed1f92774 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -541,7 +541,7 @@ static int shift_arg_pages(struct vm_area_struct *vma, unsigned long shift)
                 /*
                  * when the old and new regions overlap clear from new_end.
                  */
-                free_pgd_range(&tlb, new_end, old_end, new_end,
+                free_pgd_range(tlb, new_end, old_end, new_end,
                         vma->vm_next ? vma->vm_next->vm_start : 0);
         } else {
                 /*
@@ -550,7 +550,7 @@ static int shift_arg_pages(struct vm_area_struct *vma, unsigned long shift)
                  * have constraints on va-space that make this illegal (IA64) -
                  * for the others its just a little faster.
                  */
-                free_pgd_range(&tlb, old_start, old_end, new_end,
+                free_pgd_range(tlb, old_start, old_end, new_end,
                         vma->vm_next ? vma->vm_next->vm_start : 0);
         }
         tlb_finish_mmu(tlb, new_end, old_end);
diff --git a/include/asm-ia64/hugetlb.h b/include/asm-ia64/hugetlb.h
index f28a9701f1cf..e9d1e5e2382d 100644
--- a/include/asm-ia64/hugetlb.h
+++ b/include/asm-ia64/hugetlb.h
@@ -4,7 +4,7 @@
 #include <asm/page.h>
 
 
-void hugetlb_free_pgd_range(struct mmu_gather **tlb, unsigned long addr,
+void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
                             unsigned long end, unsigned long floor,
                             unsigned long ceiling);
 
diff --git a/include/asm-powerpc/hugetlb.h b/include/asm-powerpc/hugetlb.h
index be32ff02f4a0..0a37aa5ecaa5 100644
--- a/include/asm-powerpc/hugetlb.h
+++ b/include/asm-powerpc/hugetlb.h
@@ -7,7 +7,7 @@
 int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
                            unsigned long len);
 
-void hugetlb_free_pgd_range(struct mmu_gather **tlb, unsigned long addr,
+void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
                             unsigned long end, unsigned long floor,
                             unsigned long ceiling);
 
diff --git a/include/asm-sh/hugetlb.h b/include/asm-sh/hugetlb.h
index 02402303d89b..fb30018938c7 100644
--- a/include/asm-sh/hugetlb.h
+++ b/include/asm-sh/hugetlb.h
@@ -26,7 +26,7 @@ static inline int prepare_hugepage_range(unsigned long addr, unsigned long len)
 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
 }
 
-static inline void hugetlb_free_pgd_range(struct mmu_gather **tlb,
+static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
                                           unsigned long addr, unsigned long end,
                                           unsigned long floor,
                                           unsigned long ceiling)
diff --git a/include/asm-sparc/hugetlb.h b/include/asm-sparc/hugetlb.h
index 412af58926a0..aeb92374ca3d 100644
--- a/include/asm-sparc/hugetlb.h
+++ b/include/asm-sparc/hugetlb.h
@@ -31,7 +31,7 @@ static inline int prepare_hugepage_range(unsigned long addr, unsigned long len)
         return 0;
 }
 
-static inline void hugetlb_free_pgd_range(struct mmu_gather **tlb,
+static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
                                           unsigned long addr, unsigned long end,
                                           unsigned long floor,
                                           unsigned long ceiling)
diff --git a/include/asm-x86/hugetlb.h b/include/asm-x86/hugetlb.h
index 14171a4924f6..7eed6e0883bf 100644
--- a/include/asm-x86/hugetlb.h
+++ b/include/asm-x86/hugetlb.h
@@ -26,7 +26,7 @@ static inline int prepare_hugepage_range(unsigned long addr, unsigned long len)
 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
 }
 
-static inline void hugetlb_free_pgd_range(struct mmu_gather **tlb,
+static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
                                           unsigned long addr, unsigned long end,
                                           unsigned long floor,
                                           unsigned long ceiling)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 5c7f8f64f70e..f8071097302a 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -769,10 +769,8 @@ struct mm_walk {
 
 int walk_page_range(unsigned long addr, unsigned long end,
                 struct mm_walk *walk);
-void free_pgd_range(struct mmu_gather **tlb, unsigned long addr,
+void free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
                 unsigned long end, unsigned long floor, unsigned long ceiling);
-void free_pgtables(struct mmu_gather **tlb, struct vm_area_struct *start_vma,
-                unsigned long floor, unsigned long ceiling);
 int copy_page_range(struct mm_struct *dst, struct mm_struct *src,
                         struct vm_area_struct *vma);
 void unmap_mapping_range(struct address_space *mapping,
diff --git a/mm/internal.h b/mm/internal.h
index 50807e12490e..858ad01864dc 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -13,6 +13,9 @@
 
 #include <linux/mm.h>
 
+void free_pgtables(struct mmu_gather *tlb, struct vm_area_struct *start_vma,
+                unsigned long floor, unsigned long ceiling);
+
 static inline void set_page_count(struct page *page, int v)
 {
         atomic_set(&page->_count, v);
diff --git a/mm/memory.c b/mm/memory.c
index 87350321e66f..82f3f1c5cf17 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -61,6 +61,8 @@
 #include <linux/swapops.h>
 #include <linux/elf.h>
 
+#include "internal.h"
+
 #ifndef CONFIG_NEED_MULTIPLE_NODES
 /* use the per-pgdat data instead for discontigmem - mbligh */
 unsigned long max_mapnr;
@@ -211,7 +213,7 @@ static inline void free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
  *
  * Must be called with pagetable lock held.
  */
-void free_pgd_range(struct mmu_gather **tlb,
+void free_pgd_range(struct mmu_gather *tlb,
                         unsigned long addr, unsigned long end,
                         unsigned long floor, unsigned long ceiling)
 {
@@ -262,16 +264,16 @@ void free_pgd_range(struct mmu_gather **tlb,
                 return;
 
         start = addr;
-        pgd = pgd_offset((*tlb)->mm, addr);
+        pgd = pgd_offset(tlb->mm, addr);
         do {
                 next = pgd_addr_end(addr, end);
                 if (pgd_none_or_clear_bad(pgd))
                         continue;
-                free_pud_range(*tlb, pgd, addr, next, floor, ceiling);
+                free_pud_range(tlb, pgd, addr, next, floor, ceiling);
         } while (pgd++, addr = next, addr != end);
 }
 
-void free_pgtables(struct mmu_gather **tlb, struct vm_area_struct *vma,
+void free_pgtables(struct mmu_gather *tlb, struct vm_area_struct *vma,
                 unsigned long floor, unsigned long ceiling)
 {
         while (vma) {
diff --git a/mm/mmap.c b/mm/mmap.c
index 1d102b956fd8..75e0d0673d78 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -32,6 +32,8 @@
 #include <asm/tlb.h>
 #include <asm/mmu_context.h>
 
+#include "internal.h"
+
 #ifndef arch_mmap_check
 #define arch_mmap_check(addr, len, flags)       (0)
 #endif
@@ -1763,7 +1765,7 @@ static void unmap_region(struct mm_struct *mm,
         update_hiwater_rss(mm);
         unmap_vmas(&tlb, vma, start, end, &nr_accounted, NULL);
         vm_unacct_memory(nr_accounted);
-        free_pgtables(&tlb, vma, prev? prev->vm_end: FIRST_USER_ADDRESS,
+        free_pgtables(tlb, vma, prev? prev->vm_end: FIRST_USER_ADDRESS,
                                  next? next->vm_start: 0);
         tlb_finish_mmu(tlb, start, end);
 }
@@ -2063,7 +2065,7 @@ void exit_mmap(struct mm_struct *mm)
         /* Use -1 here to ensure all VMAs in the mm are unmapped */
         end = unmap_vmas(&tlb, vma, 0, -1, &nr_accounted, NULL);
         vm_unacct_memory(nr_accounted);
-        free_pgtables(&tlb, vma, FIRST_USER_ADDRESS, 0);
+        free_pgtables(tlb, vma, FIRST_USER_ADDRESS, 0);
         tlb_finish_mmu(tlb, 0, end);
 
         /*