Add kmap for highmem access

diff --git a/yaffs_fs.c b/yaffs_fs.c
index 2d0f8a068ef0755038db472a9068e4aee4944f9a..2672c454f105e3bb7f6238da68ad57e63d542def 100644 (file)
--- a/yaffs_fs.c
+++ b/yaffs_fs.c
@@ -32,7 +32,7 @@
  */
 
 const char *yaffs_fs_c_version =
-    "$Id: yaffs_fs.c,v 1.68 2008-07-23 03:35:12 charles Exp $";
+    "$Id: yaffs_fs.c,v 1.69 2008-08-28 02:42:11 charles Exp $";
 extern const char *yaffs_guts_c_version;
 
 #include <linux/version.h>
@@ -714,13 +714,17 @@ static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
                              unsigned to)
 {
 
-       void *addr = page_address(pg) + offset;
+       void *addr, *kva;
+       
        loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset;
        int nBytes = to - offset;
        int nWritten;
 
        unsigned spos = pos;
        unsigned saddr = (unsigned)addr;
+       
+       kva=kmap(pg);
+       addr = kva + offset;
 
        T(YAFFS_TRACE_OS,
          (KERN_DEBUG "yaffs_commit_write addr %x pos %x nBytes %d\n", saddr,
@@ -739,6 +743,8 @@ static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
                SetPageUptodate(pg);
        }
 
+       kunmap(pg);
+
        T(YAFFS_TRACE_OS,
          (KERN_DEBUG "yaffs_commit_write returning %d\n",
           nWritten == nBytes ? 0 : nWritten));