[PATCH] ufs: fix oops with `ufs1' type

"rm" command, on file system with "ufs1" type cause system hang up.  This
is, in fact, not so bad as it seems to be, because of after that in "kernel
control path" there are 3-4 places which may cause "oops".

So the first patch fix oopses, and the second patch fix "kernel hang up".

"oops" appears because of reading of group's summary info partly wrong, and
access to not first group's summary info cause "oops".

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

2 files changed, 2 insertions, 3 deletions

diff --git a/include/linux/ufs_fs.h b/include/linux/ufs_fs.h
index 7a6babeca256..f26118ea1c58 100644
--- a/include/linux/ufs_fs.h
+++ b/include/linux/ufs_fs.h
@@ -502,8 +502,7 @@ struct ufs_super_block {
 /*
  * Convert cylinder group to base address of its global summary info.
  */
-#define fs_cs(indx) \
-        s_csp[(indx) >> uspi->s_csshift][(indx) & ~uspi->s_csmask]
+#define fs_cs(indx) s_csp[(indx)]
 
 /*
  * Cylinder group block for a file system.
diff --git a/include/linux/ufs_fs_sb.h b/include/linux/ufs_fs_sb.h
index c1be4c226486..8ff13c160f3d 100644
--- a/include/linux/ufs_fs_sb.h
+++ b/include/linux/ufs_fs_sb.h
@@ -25,7 +25,7 @@ struct ufs_csum;
 
 struct ufs_sb_info {
         struct ufs_sb_private_info * s_uspi;    
-        struct ufs_csum * s_csp[UFS_MAXCSBUFS];
+        struct ufs_csum * s_csp;
         unsigned s_bytesex;
         unsigned s_flags;
         struct buffer_head ** s_ucg;