[GFS2] Fix a ref count bug and other clean ups

This fixes a ref count bug that sometimes showed up a umount time
(causing it to hang) but it otherwise mostly harmless. At the same
time there are some clean ups including making the log operations
structures const, moving a memory allocation so that its not done
in the fast path of checking to see if there is an outstanding
transaction related to a particular glock.

Removes the sd_log_wrap varaible which was updated, but never actually
used anywhere. Updates the gfs2 ioctl() to run without the kernel lock
(which it never needed anyway). Removes the "invalidate inodes" loop
from GFS2's put_super routine. This is done in kill super anyway so
we don't need to do it here. The loop was also bogus in that if there
are any inodes "stuck" at this point its a bug and we need to know
about it rather than hide it by hanging forever.

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

1 files changed, 7 insertions, 7 deletions

diff --git a/fs/gfs2/lops.h b/fs/gfs2/lops.h
index 417f5aade4b1..0c78d222d6f2 100644
--- a/fs/gfs2/lops.h
+++ b/fs/gfs2/lops.h
@@ -10,16 +10,16 @@
 #ifndef __LOPS_DOT_H__
 #define __LOPS_DOT_H__
 
-extern struct gfs2_log_operations gfs2_glock_lops;
-extern struct gfs2_log_operations gfs2_buf_lops;
-extern struct gfs2_log_operations gfs2_revoke_lops;
-extern struct gfs2_log_operations gfs2_rg_lops;
-extern struct gfs2_log_operations gfs2_databuf_lops;
+extern const struct gfs2_log_operations gfs2_glock_lops;
+extern const struct gfs2_log_operations gfs2_buf_lops;
+extern const struct gfs2_log_operations gfs2_revoke_lops;
+extern const struct gfs2_log_operations gfs2_rg_lops;
+extern const struct gfs2_log_operations gfs2_databuf_lops;
 
-extern struct gfs2_log_operations *gfs2_log_ops[];
+extern const struct gfs2_log_operations *gfs2_log_ops[];
 
 static inline void lops_init_le(struct gfs2_log_element *le,
-                                struct gfs2_log_operations *lops)
+                                const struct gfs2_log_operations *lops)
 {
         INIT_LIST_HEAD(&le->le_list);
         le->le_ops = lops;