UBIFS: introduce a "grouped" journal head flag

Journal heads are different in a way how UBIFS writes nodes there. All normal
journal heads receive grouped nodes, while the GC journal heads receives
ungrouped nodes. This patch adds a 'grouped' flag to 'struct ubifs_jhead' which
describes this property.

This patch is a preparation to a further recovery fix.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 1ab0d22e4c94..1e40db740da9 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -811,15 +811,18 @@ static int alloc_wbufs(struct ubifs_info *c)
 
                 c->jheads[i].wbuf.sync_callback = &bud_wbuf_callback;
                 c->jheads[i].wbuf.jhead = i;
+                c->jheads[i].grouped = 1;
         }
 
         c->jheads[BASEHD].wbuf.dtype = UBI_SHORTTERM;
         /*
          * Garbage Collector head likely contains long-term data and
-         * does not need to be synchronized by timer.
+         * does not need to be synchronized by timer. Also GC head nodes are
+         * not grouped.
          */
         c->jheads[GCHD].wbuf.dtype = UBI_LONGTERM;
         c->jheads[GCHD].wbuf.no_timer = 1;
+        c->jheads[GCHD].grouped = 0;
 
         return 0;
 }