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authorAl Viro <viro@zeniv.linux.org.uk>2009-11-30 08:38:43 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2009-12-11 06:34:09 -0500
commitc4caa778157dbbf04116f0ac2111e389b5cd7a29 (patch)
treed8e26c07bacaaa6b1e6b1e57816fd42da94e15f4 /arch
parent0ec62d290912bb4b989be7563851bc364ec73b56 (diff)
downloadlinux-stericsson-c4caa778157dbbf04116f0ac2111e389b5cd7a29.tar.gz
file ->get_unmapped_area() shouldn't duplicate work of get_unmapped_area()
... we should call mm ->get_unmapped_area() instead and let our caller do the final checks. Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/sparc/kernel/sys_sparc_64.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
index ddda12fcbac2..d498b32c75f6 100644
--- 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;
}