MIPS: Trivial style cleanups in mmap.c

Fix checkpatch warnings.  Rename arch_get_unmapped_area_foo() to
arch_get_unmapped_area_common().  Make indentations and spacing more
consistent.  Add <linux/compiler.h> for likely/unlikely.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: Jian Peng <jipeng2005@gmail.com>
Cc: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2506/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c
index 9ff5d0fac556569eb53d6dc85e16925f1b04cb62..302d779d5b0d02b1de195ca87b76f4b8f84bfaa3 100644 (file)
--- a/arch/mips/mm/mmap.c
+++ b/arch/mips/mm/mmap.c
@@ -6,6 +6,7 @@
  * Copyright (C) 2011 Wind River Systems,
  *   written by Ralf Baechle <ralf@linux-mips.org>
  */
+#include <linux/compiler.h>
 #include <linux/errno.h>
 #include <linux/mm.h>
 #include <linux/mman.h>
@@ -15,12 +16,11 @@
 #include <linux/sched.h>
 
 unsigned long shm_align_mask = PAGE_SIZE - 1;  /* Sane caches */
-
 EXPORT_SYMBOL(shm_align_mask);
 
 /* gap between mmap and stack */
 #define MIN_GAP (128*1024*1024UL)
-#define MAX_GAP        ((TASK_SIZE)/6*5)
+#define MAX_GAP ((TASK_SIZE)/6*5)
 
 static int mmap_is_legacy(void)
 {
@@ -57,13 +57,13 @@ static inline unsigned long COLOUR_ALIGN_DOWN(unsigned long addr,
        return base - off;
 }
 
-#define COLOUR_ALIGN(addr,pgoff)                               \
+#define COLOUR_ALIGN(addr, pgoff)                              \
        ((((addr) + shm_align_mask) & ~shm_align_mask) +        \
         (((pgoff) << PAGE_SHIFT) & shm_align_mask))
 
 enum mmap_allocation_direction {UP, DOWN};
 
-static unsigned long arch_get_unmapped_area_foo(struct file *filp,
+static unsigned long arch_get_unmapped_area_common(struct file *filp,
        unsigned long addr0, unsigned long len, unsigned long pgoff,
        unsigned long flags, enum mmap_allocation_direction dir)
 {
@@ -103,16 +103,16 @@ static unsigned long arch_get_unmapped_area_foo(struct file *filp,
 
                vma = find_vma(mm, addr);
                if (TASK_SIZE - len >= addr &&
-                  (!vma || addr + len <= vma->vm_start))
+                   (!vma || addr + len <= vma->vm_start))
                        return addr;
        }
 
        if (dir == UP) {
                addr = mm->mmap_base;
-                       if (do_color_align)
-                               addr = COLOUR_ALIGN(addr, pgoff);
-                       else
-                               addr = PAGE_ALIGN(addr);
+               if (do_color_align)
+                       addr = COLOUR_ALIGN(addr, pgoff);
+               else
+                       addr = PAGE_ALIGN(addr);
 
                for (vma = find_vma(current->mm, addr); ; vma = vma->vm_next) {
                        /* At this point:  (!vma || addr < vma->vm_end). */
@@ -131,28 +131,30 @@ static unsigned long arch_get_unmapped_area_foo(struct file *filp,
                        mm->free_area_cache = mm->mmap_base;
                }
 
-               /* either no address requested or can't fit in requested address hole */
+               /*
+                * either no address requested, or the mapping can't fit into
+                * the requested address hole
+                */
                addr = mm->free_area_cache;
-                       if (do_color_align) {
-                               unsigned long base =
-                                       COLOUR_ALIGN_DOWN(addr - len, pgoff);
-
+               if (do_color_align) {
+                       unsigned long base =
+                               COLOUR_ALIGN_DOWN(addr - len, pgoff);
                        addr = base + len;
-                }
+               }
 
                /* make sure it can fit in the remaining address space */
                if (likely(addr > len)) {
                        vma = find_vma(mm, addr - len);
                        if (!vma || addr <= vma->vm_start) {
-                               /* remember the address as a hint for next time */
-                               return mm->free_area_cache = addr-len;
+                               /* cache the address as a hint for next time */
+                               return mm->free_area_cache = addr - len;
                        }
                }
 
                if (unlikely(mm->mmap_base < len))
                        goto bottomup;
 
-               addr = mm->mmap_base-len;
+               addr = mm->mmap_base - len;
                if (do_color_align)
                        addr = COLOUR_ALIGN_DOWN(addr, pgoff);
 
@@ -163,8 +165,8 @@ static unsigned long arch_get_unmapped_area_foo(struct file *filp,
                         * return with success:
                         */
                        vma = find_vma(mm, addr);
-                       if (likely(!vma || addr+len <= vma->vm_start)) {
-                               /* remember the address as a hint for next time */
+                       if (likely(!vma || addr + len <= vma->vm_start)) {
+                               /* cache the address as a hint for next time */
                                return mm->free_area_cache = addr;
                        }
 
@@ -173,7 +175,7 @@ static unsigned long arch_get_unmapped_area_foo(struct file *filp,
                                mm->cached_hole_size = vma->vm_start - addr;
 
                        /* try just below the current vma->vm_start */
-                       addr = vma->vm_start-len;
+                       addr = vma->vm_start - len;
                        if (do_color_align)
                                addr = COLOUR_ALIGN_DOWN(addr, pgoff);
                } while (likely(len < vma->vm_start));
@@ -201,7 +203,7 @@ bottomup:
 unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr0,
        unsigned long len, unsigned long pgoff, unsigned long flags)
 {
-       return arch_get_unmapped_area_foo(filp,
+       return arch_get_unmapped_area_common(filp,
                        addr0, len, pgoff, flags, UP);
 }
 
@@ -213,7 +215,7 @@ unsigned long arch_get_unmapped_area_topdown(struct file *filp,
        unsigned long addr0, unsigned long len, unsigned long pgoff,
        unsigned long flags)
 {
-       return arch_get_unmapped_area_foo(filp,
+       return arch_get_unmapped_area_common(filp,
                        addr0, len, pgoff, flags, DOWN);
 }