[CIFS] Remove unused cifs_oplock_cachep

CC: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

fs/cifs/cifsfs.c

@@ -86,8 +86,6 @@ extern mempool_t *cifs_sm_req_poolp;
 extern mempool_t *cifs_req_poolp;
 extern mempool_t *cifs_mid_poolp;
 
-extern struct kmem_cache *cifs_oplock_cachep;
-
 static int
 cifs_read_super(struct super_block *sb, void *data,
 		const char *devname, int silent)
@@ -289,7 +287,6 @@ static int cifs_permission(struct inode *inode, int mask)
 static struct kmem_cache *cifs_inode_cachep;
 static struct kmem_cache *cifs_req_cachep;
 static struct kmem_cache *cifs_mid_cachep;
-struct kmem_cache *cifs_oplock_cachep;
 static struct kmem_cache *cifs_sm_req_cachep;
 mempool_t *cifs_sm_req_poolp;
 mempool_t *cifs_req_poolp;
@@ -939,15 +936,6 @@ cifs_init_mids(void)
 		return -ENOMEM;
 	}
 
-	cifs_oplock_cachep = kmem_cache_create("cifs_oplock_structs",
-					sizeof(struct oplock_q_entry), 0,
-					SLAB_HWCACHE_ALIGN, NULL);
-	if (cifs_oplock_cachep == NULL) {
-		mempool_destroy(cifs_mid_poolp);
-		kmem_cache_destroy(cifs_mid_cachep);
-		return -ENOMEM;
-	}
-
 	return 0;
 }
 
@@ -956,7 +944,6 @@ cifs_destroy_mids(void)
 {
 	mempool_destroy(cifs_mid_poolp);
 	kmem_cache_destroy(cifs_mid_cachep);
-	kmem_cache_destroy(cifs_oplock_cachep);
 }
 
 static int __init

fs/cifs/transport.c

@@ -35,7 +35,6 @@
 #include "cifs_debug.h"
 
 extern mempool_t *cifs_mid_poolp;
-extern struct kmem_cache *cifs_oplock_cachep;
 
 static struct mid_q_entry *
 AllocMidQEntry(const struct smb_hdr *smb_buffer, struct TCP_Server_Info *server)