1 files changed, 9 insertions, 15 deletions

diff --git a/arch/sparc/mm/sun4c.c b/arch/sparc/mm/sun4c.c
index 2ffacd67c424..cf38846753dd 100644
--- a/arch/sparc/mm/sun4c.c
+++ b/arch/sparc/mm/sun4c.c
@@ -12,11 +12,13 @@
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/bootmem.h>
 #include <linux/highmem.h>
 #include <linux/fs.h>
 #include <linux/seq_file.h>
 #include <linux/scatterlist.h>
+#include <linux/bitmap.h>
 
 #include <asm/sections.h>
 #include <asm/page.h>
@@ -1021,20 +1023,12 @@ static char *sun4c_lockarea(char *vaddr, unsigned long size)
         npages = (((unsigned long)vaddr & ~PAGE_MASK) +
                   size + (PAGE_SIZE-1)) >> PAGE_SHIFT;
 
-        scan = 0;
         local_irq_save(flags);
-        for (;;) {
-                scan = find_next_zero_bit(sun4c_iobuffer_map,
-                                          iobuffer_map_size, scan);
-                if ((base = scan) + npages > iobuffer_map_size) goto abend;
-                for (;;) {
-                        if (scan >= base + npages) goto found;
-                        if (test_bit(scan, sun4c_iobuffer_map)) break;
-                        scan++;
-                }
-        }
+        base = bitmap_find_next_zero_area(sun4c_iobuffer_map, iobuffer_map_size,
+                                                0, npages, 0);
+        if (base >= iobuffer_map_size)
+                goto abend;
 
-found:
         high = ((base + npages) << PAGE_SHIFT) + sun4c_iobuffer_start;
         high = SUN4C_REAL_PGDIR_ALIGN(high);
         while (high > sun4c_iobuffer_high) {
@@ -1894,7 +1888,7 @@ static void sun4c_check_pgt_cache(int low, int high)
 /* An experiment, turn off by default for now... -DaveM */
 #define SUN4C_PRELOAD_PSEG
 
-void sun4c_update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte)
+void sun4c_update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep)
 {
         unsigned long flags;
         int pseg;
@@ -1936,7 +1930,7 @@ void sun4c_update_mmu_cache(struct vm_area_struct *vma, unsigned long address, p
                         start += PAGE_SIZE;
                 }
 #ifndef SUN4C_PRELOAD_PSEG
-                sun4c_put_pte(address, pte_val(pte));
+                sun4c_put_pte(address, pte_val(*ptep));
 #endif
                 local_irq_restore(flags);
                 return;
@@ -1947,7 +1941,7 @@ void sun4c_update_mmu_cache(struct vm_area_struct *vma, unsigned long address, p
                 add_lru(entry);
         }
 
-        sun4c_put_pte(address, pte_val(pte));
+        sun4c_put_pte(address, pte_val(*ptep));
         local_irq_restore(flags);
 }