[GFS2] Remove gfs2_databuf in favour of gfs2_bufdata structure

Removing the gfs2_databuf structure and using gfs2_bufdata instead
is a step towards allowing journaling of data without requiring the
metadata header on each journaled block. The idea is to merge the
code paths for ordered data with that of journaled data, with the
log operations in lops.c tacking account of the different types of
buffers as they are presented to it. Largely the code path for
metadata will be similar too, but obviously through a different set
of log operations.

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

1 files changed, 5 insertions, 5 deletions

diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c
index d352b3528f5e..db66d3287550 100644
--- a/fs/gfs2/ops_address.c
+++ b/fs/gfs2/ops_address.c
@@ -429,13 +429,13 @@ static sector_t gfs2_bmap(struct address_space *mapping, sector_t lblock)
 
 static void discard_buffer(struct gfs2_sbd *sdp, struct buffer_head *bh)
 {
-        struct gfs2_databuf *db;
+        struct gfs2_bufdata *bd;
 
         gfs2_log_lock(sdp);
-        db = get_v2db(bh);
-        if (db) {
-                db->db_bh = NULL;
-                set_v2db(bh, NULL);
+        bd = get_v2bd(bh);
+        if (bd) {
+                bd->bd_bh = NULL;
+                set_v2bd(bh, NULL);
                 gfs2_log_unlock(sdp);
                 brelse(bh);
         } else