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authorDavid Howells <dhowells@redhat.com>2010-01-15 17:01:35 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-01-16 12:15:40 -0800
commitefc1a3b16930c41d64ffefde16b87d82f603a8a0 (patch)
tree1f651e22f534f1b3eacd2fab97e9351aa75abd0b /include
parent779c10232ceb11c1b259232c4845cfb2850287b7 (diff)
downloadlinux-linaro-android-efc1a3b16930c41d64ffefde16b87d82f603a8a0.tar.gz
nommu: don't need get_unmapped_area() for NOMMU
get_unmapped_area() is unnecessary for NOMMU as no-one calls it. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Greg Ungerer <gerg@snapgear.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mm_types.h2
-rw-r--r--include/linux/sched.h7
2 files changed, 7 insertions, 2 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 80cfa78a8cf..36f96271306 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -205,10 +205,12 @@ struct mm_struct {
struct vm_area_struct * mmap; /* list of VMAs */
struct rb_root mm_rb;
struct vm_area_struct * mmap_cache; /* last find_vma result */
+#ifdef CONFIG_MMU
unsigned long (*get_unmapped_area) (struct file *filp,
unsigned long addr, unsigned long len,
unsigned long pgoff, unsigned long flags);
void (*unmap_area) (struct mm_struct *mm, unsigned long addr);
+#endif
unsigned long mmap_base; /* base of mmap area */
unsigned long task_size; /* size of task vm space */
unsigned long cached_hole_size; /* if non-zero, the largest hole below free_area_cache */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 8d4991be9d5..6f7bba93929 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -377,6 +377,8 @@ extern int sysctl_max_map_count;
#include <linux/aio.h>
+#ifdef CONFIG_MMU
+extern void arch_pick_mmap_layout(struct mm_struct *mm);
extern unsigned long
arch_get_unmapped_area(struct file *, unsigned long, unsigned long,
unsigned long, unsigned long);
@@ -386,6 +388,9 @@ arch_get_unmapped_area_topdown(struct file *filp, unsigned long addr,
unsigned long flags);
extern void arch_unmap_area(struct mm_struct *, unsigned long);
extern void arch_unmap_area_topdown(struct mm_struct *, unsigned long);
+#else
+static inline void arch_pick_mmap_layout(struct mm_struct *mm) {}
+#endif
#if USE_SPLIT_PTLOCKS
/*
@@ -2491,8 +2496,6 @@ static inline void set_task_cpu(struct task_struct *p, unsigned int cpu)
#endif /* CONFIG_SMP */
-extern void arch_pick_mmap_layout(struct mm_struct *mm);
-
#ifdef CONFIG_TRACING
extern void
__trace_special(void *__tr, void *__data,