[GFS2] Allow mounting of gfs2 and gfs2meta at the same time

This patch allows the simultaneous mounting of gfs2meta and gfs2
filesystems. A restriction however is that a gfs2meta fs may only be
mounted if its corresponding gfs2 filesystem is also mounted. Also, a
gfs2 filesystem cannot be unmounted before its gfs2meta filesystem.

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

1 files changed, 6 insertions, 0 deletions

diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 005788fb361f..ef713dbff601 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -1165,7 +1165,13 @@ static void add_to_queue(struct gfs2_holder *gh)
         existing = find_holder_by_owner(&gl->gl_holders, gh->gh_owner);
         if (existing) {
                 print_symbol(KERN_WARNING "original: %s\n", existing->gh_ip);
+                printk(KERN_INFO "pid : %d\n", existing->gh_owner->pid);
+                printk(KERN_INFO "lock type : %d lock state : %d\n", 
+                                existing->gh_gl->gl_name.ln_type, existing->gh_gl->gl_state);
                 print_symbol(KERN_WARNING "new: %s\n", gh->gh_ip);
+                printk(KERN_INFO "pid : %d\n", gh->gh_owner->pid);
+                printk(KERN_INFO "lock type : %d lock state : %d\n", 
+                                gl->gl_name.ln_type, gl->gl_state);
                 BUG();
         }