[GFS2] Tidy up in various files

Tidy up some files and remove an unused routine in meta_io.h. Also
added a bit of extra debugging in meta_io.h.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 4 insertions, 19 deletions

diff --git a/fs/gfs2/meta_io.h b/fs/gfs2/meta_io.h
index 23c6a596fd9e..951814e86272 100644
--- a/fs/gfs2/meta_io.h
+++ b/fs/gfs2/meta_io.h
@@ -17,35 +17,20 @@ static inline void gfs2_buffer_clear(struct buffer_head *bh)
 
 static inline void gfs2_buffer_clear_tail(struct buffer_head *bh, int head)
 {
+        BUG_ON(head > bh->b_size);
         memset(bh->b_data + head, 0, bh->b_size - head);
 }
 
-static inline void gfs2_buffer_clear_ends(struct buffer_head *bh, int offset,
-                                          int amount, int journaled)
-{
-        int z_off1 = (journaled) ? sizeof(struct gfs2_meta_header) : 0;
-        int z_len1 = offset - z_off1;
-        int z_off2 = offset + amount;
-        int z_len2 = (bh)->b_size - z_off2;
-
-        if (z_len1)
-                memset(bh->b_data + z_off1, 0, z_len1);
-
-        if (z_len2)
-                memset(bh->b_data + z_off2, 0, z_len2);
-}
-
 static inline void gfs2_buffer_copy_tail(struct buffer_head *to_bh,
                                          int to_head,
                                          struct buffer_head *from_bh,
                                          int from_head)
 {
-        memcpy(to_bh->b_data + to_head,
-               from_bh->b_data + from_head,
+        BUG_ON(from_head < to_head);
+        memcpy(to_bh->b_data + to_head, from_bh->b_data + from_head,
                from_bh->b_size - from_head);
         memset(to_bh->b_data + to_bh->b_size + to_head - from_head,
-               0,
-               from_head - to_head);
+               0, from_head - to_head);
 }
 
 struct inode *gfs2_aspace_get(struct gfs2_sbd *sdp);