[PATCH -next] NFSD: Use DEFINE_SPINLOCK() for spinlock

[Huang Guobin]

From: Guobin Huang <huangguob...@huawei.com>

spinlock can be initialized automatically with DEFINE_SPINLOCK()
rather than explicitly calling spin_lock_init().

Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Guobin Huang <huangguob...@huawei.com>
---
 fs/nfsd/nfssvc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index b2eef4112bc2..82ba034fa579 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -84,7 +84,7 @@ DEFINE_MUTEX(nfsd_mutex);
  * version 4.1 DRC caches.
  * nfsd_drc_pages_used tracks the current version 4.1 DRC memory usage.
  */
-spinlock_t     nfsd_drc_lock;
+DEFINE_SPINLOCK(nfsd_drc_lock);
 unsigned long  nfsd_drc_max_mem;
 unsigned long  nfsd_drc_mem_used;
 
@@ -563,7 +563,6 @@ static void set_max_drc(void)
        nfsd_drc_max_mem = (nr_free_buffer_pages()
                                        >> NFSD_DRC_SIZE_SHIFT) * PAGE_SIZE;
        nfsd_drc_mem_used = 0;
-       spin_lock_init(&nfsd_drc_lock);
        dprintk("%s nfsd_drc_max_mem %lu \n", __func__, nfsd_drc_max_mem);
 }