[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>

diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 4cdda1a..513aaf0 100644 (file)
--- 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 88686fc..9c7765c 100644 (file)
--- 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;
 }