[PATCH] ufs2 write: block allocation update

Patch adds ability to work with 64bit metadata, this made by replacing work
with 32bit pointers by inline functions.

Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 23 insertions, 12 deletions

diff --git a/include/linux/ufs_fs.h b/include/linux/ufs_fs.h
index 24ce39820560..44c45449065c 100644
--- a/include/linux/ufs_fs.h
+++ b/include/linux/ufs_fs.h
@@ -40,6 +40,7 @@ typedef __u64 __fs64;
 typedef __u32 __fs32;
 typedef __u16 __fs16;
 #else
+#include <asm/div64.h>
 typedef __u64 __bitwise __fs64;
 typedef __u32 __bitwise __fs32;
 typedef __u16 __bitwise __fs16;
@@ -267,13 +268,6 @@ typedef __u16 __bitwise __fs16;
 #define ufs_inotofsbo(x)        ((x) % uspi->s_inopf)
 
 /*
- * Give cylinder group number for a file system block.
- * Give cylinder group block number for a file system block.
- */
-#define ufs_dtog(d)     ((d) / uspi->s_fpg)
-#define ufs_dtogd(d)    ((d) % uspi->s_fpg)
-
-/*
  * Compute the cylinder and rotational position of a cyl block addr.
  */
 #define ufs_cbtocylno(bno) \
@@ -723,6 +717,7 @@ struct ufs_cg_private_info {
         __u32   c_nclusterblks; /* number of clusters this cg */
 };      
 
+
 struct ufs_sb_private_info {
         struct ufs_buffer_head s_ubh; /* buffer containing super block */
         struct ufs_csum_core cs_total;
@@ -952,10 +947,10 @@ struct ufs_super_block_third {
 #ifdef __KERNEL__
 
 /* balloc.c */
-extern void ufs_free_fragments (struct inode *, unsigned, unsigned);
-extern void ufs_free_blocks (struct inode *, unsigned, unsigned);
-extern unsigned ufs_new_fragments(struct inode *, __fs32 *, unsigned, unsigned,
-                                  unsigned, int *, struct page *);
+extern void ufs_free_fragments (struct inode *, u64, unsigned);
+extern void ufs_free_blocks (struct inode *, u64, unsigned);
+extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
+                             unsigned, int *, struct page *);
 
 /* cylinder.c */
 extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
@@ -1016,6 +1011,22 @@ static inline struct ufs_inode_info *UFS_I(struct inode *inode)
         return container_of(inode, struct ufs_inode_info, vfs_inode);
 }
 
+/*
+ * Give cylinder group number for a file system block.
+ * Give cylinder group block number for a file system block.
+ */
+/* #define      ufs_dtog(d)     ((d) / uspi->s_fpg) */
+static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
+{
+        do_div(b, uspi->s_fpg);
+        return b;
+}
+/* #define      ufs_dtogd(d)    ((d) % uspi->s_fpg) */
+static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
+{
+        return do_div(b, uspi->s_fpg);
+}
+
 #endif  /* __KERNEL__ */
 
 #endif /* __LINUX_UFS_FS_H */
diff --git a/include/linux/ufs_fs_i.h b/include/linux/ufs_fs_i.h
index fef77d52b029..6496caa82f9e 100644
--- a/include/linux/ufs_fs_i.h
+++ b/include/linux/ufs_fs_i.h
@@ -25,7 +25,7 @@ struct ufs_inode_info {
         __u32   i_unused2;
         __u32   i_oeftflag;
         __u16   i_osync;
-        __u32   i_lastfrag;
+        __u64   i_lastfrag;
         __u32   i_dir_start_lookup;
         struct inode vfs_inode;
 };