[GFS2] Fix bug where lock not held
The log lock needs to be held when manipulating the counter
for the number of free journal blocks.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index 554fe5b..72eec65 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -569,16 +569,15 @@
else if (sdp->sd_log_tail != current_tail(sdp) && !sdp->sd_log_idle)
log_write_header(sdp, 0, PULL);
lops_after_commit(sdp, ai);
+
+ gfs2_log_lock(sdp);
sdp->sd_log_head = sdp->sd_log_flush_head;
-
sdp->sd_log_blks_free -= sdp->sd_log_num_hdrs;
-
sdp->sd_log_blks_reserved = 0;
sdp->sd_log_commited_buf = 0;
sdp->sd_log_num_hdrs = 0;
sdp->sd_log_commited_revoke = 0;
- gfs2_log_lock(sdp);
if (!list_empty(&ai->ai_ail1_list)) {
list_add(&ai->ai_list, &sdp->sd_ail1_list);
ai = NULL;