[PATCH] ext4: switch fsblk to sector_t

Redefine ext3 in-kernel filesystem block type (ext3_fsblk_t) from unsigned
long to sector_t, to allow kernel to handle  >32 bit ext3 blocks.

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/include/linux/ext4_fs_i.h b/include/linux/ext4_fs_i.h
index 40ce04a52b04..b2ccd9876bd1 100644
--- a/include/linux/ext4_fs_i.h
+++ b/include/linux/ext4_fs_i.h
@@ -25,9 +25,13 @@
 typedef int ext4_grpblk_t;
 
 /* data type for filesystem-wide blocks number */
-typedef unsigned long ext4_fsblk_t;
+typedef sector_t ext4_fsblk_t;
 
+#if BITS_PER_LONG == 64
 #define E3FSBLK "%lu"
+#else
+#define E3FSBLK "%llu"
+#endif
 
 struct ext4_reserve_window {
         ext4_fsblk_t    _rsv_start;     /* First byte reserved */