[GFS2] Remove unneeded i_spin

This patch removes a vestigial variable "i_spin" from the gfs2_inode
structure.  This not only saves us memory (>300000 of these in memory
for the oom test) it also saves us time because we don't have to
spend time initializing it (i.e. slightly better performance).

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

2 files changed, 0 insertions, 2 deletions

diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 4cdda1a3e12c..513aaf0dc0ab 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -267,7 +267,6 @@ struct gfs2_inode {
         struct gfs2_alloc *i_alloc;
         u64 i_last_rg_alloc;
 
-        spinlock_t i_spin;
         struct rw_semaphore i_rw_mutex;
 };
 
diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c
index 88686fcdfb1b..9c7765c12d62 100644
--- a/fs/gfs2/main.c
+++ b/fs/gfs2/main.c
@@ -29,7 +29,6 @@ static void gfs2_init_inode_once(struct kmem_cache *cachep, void *foo)
         struct gfs2_inode *ip = foo;
 
         inode_init_once(&ip->i_inode);
-        spin_lock_init(&ip->i_spin);
         init_rwsem(&ip->i_rw_mutex);
         ip->i_alloc = NULL;
 }