[GFS2] Reduce size of struct gdlm_lock

This patch removes the completion (which is rather large) from struct
gdlm_lock in favour of using the wait_on_bit() functions. We don't need
to add any extra fields to the structure to do this, so we save 32 bytes
(on x86_64) per structure. This adds up to quite a lot when we may
potentially have millions of these lock structures,

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Acked-by: David Teigland <teigland@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/gfs2/locking/dlm/lock_dlm.h b/fs/gfs2/locking/dlm/lock_dlm.h
index d074c6e6f9bf..24d70f73b651 100644
--- a/fs/gfs2/locking/dlm/lock_dlm.h
+++ b/fs/gfs2/locking/dlm/lock_dlm.h
@@ -101,6 +101,7 @@ enum {
         LFL_NOBAST              = 10,
         LFL_HEADQUE             = 11,
         LFL_UNLOCK_DELETE       = 12,
+        LFL_AST_WAIT            = 13,
 };
 
 struct gdlm_lock {
@@ -117,7 +118,6 @@ struct gdlm_lock {
         unsigned long           flags;          /* lock_dlm flags LFL_ */
 
         int                     bast_mode;      /* protected by async_lock */
-        struct completion       ast_wait;
 
         struct list_head        clist;          /* complete */
         struct list_head        blist;          /* blocking */