file ->get_unmapped_area() shouldn't duplicate work of get_unmapped_area()

[deliverable/linux.git] / arch / sparc / kernel / sys_sparc_64.c

diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
index e2d102447a43e5c57f8cb64a136763795ddf192b..d498b32c75f6b1d7f2f7c5b3c359b286b43cf170 100644 (file)
--- a/arch/sparc/kernel/sys_sparc_64.c
+++ b/arch/sparc/kernel/sys_sparc_64.c
@@ -317,10 +317,14 @@ bottomup:
 unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags)
 {
        unsigned long align_goal, addr = -ENOMEM;
+       unsigned long (*get_area)(struct file *, unsigned long,
+                                 unsigned long, unsigned long, unsigned long);
+
+       get_area = current->mm->get_unmapped_area;
 
        if (flags & MAP_FIXED) {
                /* Ok, don't mess with it. */
-               return get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
+               return get_area(NULL, orig_addr, len, pgoff, flags);
        }
        flags &= ~MAP_SHARED;
 
@@ -333,7 +337,7 @@ unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, u
                align_goal = (64UL * 1024);
 
        do {
-               addr = get_unmapped_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags);
+               addr = get_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags);
                if (!(addr & ~PAGE_MASK)) {
                        addr = (addr + (align_goal - 1UL)) & ~(align_goal - 1UL);
                        break;
@@ -351,7 +355,7 @@ unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, u
         * be obtained.
         */
        if (addr & ~PAGE_MASK)
-               addr = get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
+               addr = get_area(NULL, orig_addr, len, pgoff, flags);
 
        return addr;
 }
@@ -614,12 +618,6 @@ SYSCALL_DEFINE5(64_mremap, unsigned long, addr,    unsigned long, old_len,
 
        if (test_thread_flag(TIF_32BIT))
                goto out;
-       if (unlikely(new_len >= VA_EXCLUDE_START))
-               goto out;
-       if (unlikely(sparc_mmap_check(addr, old_len)))
-               goto out;
-       if (unlikely(sparc_mmap_check(new_addr, new_len)))
-               goto out;
 
        down_write(&current->mm->mmap_sem);
        ret = do_mremap(addr, old_len, new_len, flags, new_addr);