GFS2: Move recovery variables to journal structure in memory

If multiple nodes fail and their recovery work runs simultaneously, they
would use the same unprotected variables in the superblock. For example,
they would stomp on each other's revoked blocks lists, which resulted
in file system metadata corruption. This patch moves the necessary
variables so that each journal has its own separate area for tracking
its journal replay.

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

1 files changed, 9 insertions, 9 deletions

diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 456d8fa9da2b..ef26ed98e778 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -503,6 +503,15 @@ struct gfs2_jdesc {
 	unsigned int jd_jid;
 	unsigned int jd_blocks;
 	int jd_recover_error;
+	/* Replay stuff */
+
+	unsigned int jd_found_blocks;
+	unsigned int jd_found_revokes;
+	unsigned int jd_replayed_blocks;
+
+	struct list_head jd_revoke_list;
+	unsigned int jd_replay_tail;
+
 };
 
 struct gfs2_statfs_change_host {
@@ -782,15 +791,6 @@ struct gfs2_sbd {
 	struct list_head sd_ail1_list;
 	struct list_head sd_ail2_list;
 
-	/* Replay stuff */
-
-	struct list_head sd_revoke_list;
-	unsigned int sd_replay_tail;
-
-	unsigned int sd_found_blocks;
-	unsigned int sd_found_revokes;
-	unsigned int sd_replayed_blocks;
-
 	/* For quiescing the filesystem */
 	struct gfs2_holder sd_freeze_gh;