GFS2: Move log buffer lists into transaction

Over time, we hope to be able to improve the concurrency available
in the log code. This is one small step towards that, by moving
the buffer lists from the super block, and into the transaction
structure, so that each transaction builds its own buffer lists.

At transaction commit time, the buffer lists are merged into
the currently accumulating transaction. That transaction then
is passed into the before and after commit functions at journal
flush time. Thus there should be no change in overall behaviour
yet.

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

1 files changed, 3 insertions, 3 deletions

diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 645655cccdc8..99aab64c771a 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -52,7 +52,7 @@ struct gfs2_log_header_host {
  */
 
 struct gfs2_log_operations {
-        void (*lo_before_commit) (struct gfs2_sbd *sdp);
+        void (*lo_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
         void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
         void (*lo_before_scan) (struct gfs2_jdesc *jd,
                                 struct gfs2_log_header_host *head, int pass);
@@ -476,6 +476,8 @@ struct gfs2_trans {
         unsigned int tr_num_revoke_rm;
 
         struct list_head tr_list;
+        struct list_head tr_databuf;
+        struct list_head tr_buf;
 
         unsigned int tr_first;
         struct list_head tr_ail1_list;
@@ -756,9 +758,7 @@ struct gfs2_sbd {
         unsigned int sd_log_num_rg;
         unsigned int sd_log_num_databuf;
 
-        struct list_head sd_log_le_buf;
         struct list_head sd_log_le_revoke;
-        struct list_head sd_log_le_databuf;
         struct list_head sd_log_le_ordered;
         spinlock_t sd_ordered_lock;