X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=arch%2Fsparc64%2Fkernel%2Fsys_sparc32.c;h=97b77fb5c50e8d127750bfd4dd8c5c917f137c35;hb=6d52dcbe56ca8464bcad56d98a64bcd781596663;hp=1aa4288125f25906eb5fddea19ddeff3c6bac493;hpb=f589274533eb94e0217acc1db6240ce6e621bb56;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

diff --git a/arch/sparc64/kernel/sys_sparc32.c b/arch/sparc64/kernel/sys_sparc32.c
index 1aa4288..97b77fb 100644
--- a/arch/sparc64/kernel/sys_sparc32.c
+++ b/arch/sparc64/kernel/sys_sparc32.c
@@ -359,7 +359,8 @@ int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
 	return err;
 }
 
-int cp_compat_stat64(struct kstat *stat, struct compat_stat64 __user *statbuf)
+static int cp_compat_stat64(struct kstat *stat,
+			    struct compat_stat64 __user *statbuf)
 {
 	int err;
 
@@ -867,44 +868,15 @@ asmlinkage unsigned long sys32_mremap(unsigned long addr,
 	unsigned long old_len, unsigned long new_len,
 	unsigned long flags, u32 __new_addr)
 {
-	struct vm_area_struct *vma;
 	unsigned long ret = -EINVAL;
 	unsigned long new_addr = __new_addr;
 
-	if (old_len > STACK_TOP32 || new_len > STACK_TOP32)
+	if (unlikely(sparc_mmap_check(addr, old_len)))
 		goto out;
-	if (addr > STACK_TOP32 - old_len)
+	if (unlikely(sparc_mmap_check(new_addr, new_len)))
 		goto out;
 	down_write(&current->mm->mmap_sem);
-	if (flags & MREMAP_FIXED) {
-		if (new_addr > STACK_TOP32 - new_len)
-			goto out_sem;
-	} else if (addr > STACK_TOP32 - new_len) {
-		unsigned long map_flags = 0;
-		struct file *file = NULL;
-
-		ret = -ENOMEM;
-		if (!(flags & MREMAP_MAYMOVE))
-			goto out_sem;
-
-		vma = find_vma(current->mm, addr);
-		if (vma) {
-			if (vma->vm_flags & VM_SHARED)
-				map_flags |= MAP_SHARED;
-			file = vma->vm_file;
-		}
-
-		/* MREMAP_FIXED checked above. */
-		new_addr = get_unmapped_area(file, addr, new_len,
-				    vma ? vma->vm_pgoff : 0,
-				    map_flags);
-		ret = new_addr;
-		if (new_addr & ~PAGE_MASK)
-			goto out_sem;
-		flags |= MREMAP_FIXED;
-	}
 	ret = do_mremap(addr, old_len, new_len, flags, new_addr);
-out_sem:
 	up_write(&current->mm->mmap_sem);
 out:
 	return ret;