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>
diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c
index 963b2d7..7ad4094 100644
--- a/fs/gfs2/recovery.c
+++ b/fs/gfs2/recovery.c
@@ -52,9 +52,9 @@
return error;
}
-int gfs2_revoke_add(struct gfs2_sbd *sdp, u64 blkno, unsigned int where)
+int gfs2_revoke_add(struct gfs2_jdesc *jd, u64 blkno, unsigned int where)
{
- struct list_head *head = &sdp->sd_revoke_list;
+ struct list_head *head = &jd->jd_revoke_list;
struct gfs2_revoke_replay *rr;
int found = 0;
@@ -81,13 +81,13 @@
return 1;
}
-int gfs2_revoke_check(struct gfs2_sbd *sdp, u64 blkno, unsigned int where)
+int gfs2_revoke_check(struct gfs2_jdesc *jd, u64 blkno, unsigned int where)
{
struct gfs2_revoke_replay *rr;
int wrap, a, b, revoke;
int found = 0;
- list_for_each_entry(rr, &sdp->sd_revoke_list, rr_list) {
+ list_for_each_entry(rr, &jd->jd_revoke_list, rr_list) {
if (rr->rr_blkno == blkno) {
found = 1;
break;
@@ -97,17 +97,17 @@
if (!found)
return 0;
- wrap = (rr->rr_where < sdp->sd_replay_tail);
- a = (sdp->sd_replay_tail < where);
+ wrap = (rr->rr_where < jd->jd_replay_tail);
+ a = (jd->jd_replay_tail < where);
b = (where < rr->rr_where);
revoke = (wrap) ? (a || b) : (a && b);
return revoke;
}
-void gfs2_revoke_clean(struct gfs2_sbd *sdp)
+void gfs2_revoke_clean(struct gfs2_jdesc *jd)
{
- struct list_head *head = &sdp->sd_revoke_list;
+ struct list_head *head = &jd->jd_revoke_list;
struct gfs2_revoke_replay *rr;
while (!list_empty(head)) {