From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>

We don't need to allocate buffer for checking the buffer is uptodate.  This
use sb_find_get_block() instead, and if it returns NULL it's not uptodate.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 fs/fat/dir.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff -puN fs/fat/dir.c~fat-use-sb_find_get_block-instead-of-sb_getblk fs/fat/dir.c
--- 25/fs/fat/dir.c~fat-use-sb_find_get_block-instead-of-sb_getblk	Mon Nov  7 17:02:03 2005
+++ 25-akpm/fs/fat/dir.c	Mon Nov  7 17:02:03 2005
@@ -45,8 +45,8 @@ static inline void fat_dir_readahead(str
 	if ((sbi->fat_bits != 32) && (dir->i_ino == MSDOS_ROOT_INO))
 		return;
 
-	bh = sb_getblk(sb, phys);
-	if (bh && !buffer_uptodate(bh)) {
+	bh = sb_find_get_block(sb, phys);
+	if (bh == NULL || !buffer_uptodate(bh)) {
 		for (sec = 0; sec < sbi->sec_per_clus; sec++)
 			sb_breadahead(sb, phys + sec);
 	}
_