[PATCH] ufs cleanup

Here is update of ufs cleanup patch, brought on by the recently fixed
ubh_get_usb_second() bug that made some ugly code rather painfully
obvious.  It also includes

 - fix compilation warnings which appears if debug mode turn on
 - remove unnecessary duplication of code to support UFS2

I tested it on ufs1 and ufs2 file-systems.

Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 27 insertions, 30 deletions

diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index e9a42c711a9e..d4aacee593ff 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -221,7 +221,7 @@ void ufs_error (struct super_block * sb, const char * function,
         va_list args;
 
         uspi = UFS_SB(sb)->s_uspi;
-        usb1 = ubh_get_usb_first(USPI_UBH);
+        usb1 = ubh_get_usb_first(uspi);
         
         if (!(sb->s_flags & MS_RDONLY)) {
                 usb1->fs_clean = UFS_FSBAD;
@@ -253,7 +253,7 @@ void ufs_panic (struct super_block * sb, const char * function,
         va_list args;
         
         uspi = UFS_SB(sb)->s_uspi;
-        usb1 = ubh_get_usb_first(USPI_UBH);
+        usb1 = ubh_get_usb_first(uspi);
         
         if (!(sb->s_flags & MS_RDONLY)) {
                 usb1->fs_clean = UFS_FSBAD;
@@ -420,21 +420,18 @@ static int ufs_read_cylinder_structures (struct super_block *sb) {
                 if (i + uspi->s_fpb > blks)
                         size = (blks - i) * uspi->s_fsize;
 
-                if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
+                if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 
                         ubh = ubh_bread(sb,
                                 fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_csaddr) + i, size);
-                        if (!ubh)
-                                goto failed;
-                        ubh_ubhcpymem (space, ubh, size);
-                        sbi->s_csp[ufs_fragstoblks(i)]=(struct ufs_csum *)space;
-                }
-                else {
+                else 
                         ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
-                        if (!ubh)
-                                goto failed;
-                        ubh_ubhcpymem(space, ubh, size);
-                        sbi->s_csp[ufs_fragstoblks(i)]=(struct ufs_csum *)space;
-                }
+                
+                if (!ubh)
+                        goto failed;
+
+                ubh_ubhcpymem (space, ubh, size);
+                sbi->s_csp[ufs_fragstoblks(i)]=(struct ufs_csum *)space;
+
                 space += size;
                 ubh_brelse (ubh);
                 ubh = NULL;
@@ -539,6 +536,7 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
         struct inode *inode;
         unsigned block_size, super_block_size;
         unsigned flags;
+        unsigned super_block_offset;
 
         uspi = NULL;
         ubh = NULL;
@@ -586,10 +584,11 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
         if (!uspi)
                 goto failed;
 
+        super_block_offset=UFS_SBLOCK;
+
         /* Keep 2Gig file limit. Some UFS variants need to override 
            this but as I don't know which I'll let those in the know loosen
            the rules */
-           
         switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) {
         case UFS_MOUNT_UFSTYPE_44BSD:
                 UFSD(("ufstype=44bsd\n"))
@@ -601,7 +600,8 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
                 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
                 break;
         case UFS_MOUNT_UFSTYPE_UFS2:
-                UFSD(("ufstype=ufs2\n"))
+                UFSD(("ufstype=ufs2\n"));
+                super_block_offset=SBLOCK_UFS2;
                 uspi->s_fsize = block_size = 512;
                 uspi->s_fmask = ~(512 - 1);
                 uspi->s_fshift = 9;
@@ -725,19 +725,16 @@ again:
         /*
          * read ufs super block from device
          */
-        if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
-                ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + SBLOCK_UFS2/block_size, super_block_size);
-        }
-        else {
-                ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + UFS_SBLOCK/block_size, super_block_size);
-        }
+
+        ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size);
+        
         if (!ubh) 
             goto failed;
 
         
-        usb1 = ubh_get_usb_first(USPI_UBH);
-        usb2 = ubh_get_usb_second(USPI_UBH);
-        usb3 = ubh_get_usb_third(USPI_UBH);
+        usb1 = ubh_get_usb_first(uspi);
+        usb2 = ubh_get_usb_second(uspi);
+        usb3 = ubh_get_usb_third(uspi);
         usb  = (struct ufs_super_block *)
                 ((struct ufs_buffer_head *)uspi)->bh[0]->b_data ;
 
@@ -1006,8 +1003,8 @@ static void ufs_write_super (struct super_block *sb) {
         UFSD(("ENTER\n"))
         flags = UFS_SB(sb)->s_flags;
         uspi = UFS_SB(sb)->s_uspi;
-        usb1 = ubh_get_usb_first(USPI_UBH);
-        usb3 = ubh_get_usb_third(USPI_UBH);
+        usb1 = ubh_get_usb_first(uspi);
+        usb3 = ubh_get_usb_third(uspi);
 
         if (!(sb->s_flags & MS_RDONLY)) {
                 usb1->fs_time = cpu_to_fs32(sb, get_seconds());
@@ -1049,8 +1046,8 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
         
         uspi = UFS_SB(sb)->s_uspi;
         flags = UFS_SB(sb)->s_flags;
-        usb1 = ubh_get_usb_first(USPI_UBH);
-        usb3 = ubh_get_usb_third(USPI_UBH);
+        usb1 = ubh_get_usb_first(uspi);
+        usb3 = ubh_get_usb_third(uspi);
         
         /*
          * Allow the "check" option to be passed as a remount option.
@@ -1124,7 +1121,7 @@ static int ufs_statfs (struct super_block *sb, struct kstatfs *buf)
         lock_kernel();
 
         uspi = UFS_SB(sb)->s_uspi;
-        usb1 = ubh_get_usb_first (USPI_UBH);
+        usb1 = ubh_get_usb_first (uspi);
         usb  = (struct ufs_super_block *)
                 ((struct ufs_buffer_head *)uspi)->bh[0]->b_data ;