linux-kernel - [PATCH -next] nfsd: use DEFINE

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Date:   Sat, 25 Jul 2020 16:56:42 +0800
From:   Qinglang Miao <miaoqinglang@...wei.com>
To:     "J. Bruce Fields" <bfields@...ldses.org>,
        Chuck Lever <chuck.lever@...cle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     <linux-nfs@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH -next] nfsd: use DEFINE_SPINLOCK() for spinlock

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

Signed-off-by: Qinglang Miao <miaoqinglang@...wei.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 b603dfcdd..20f0a27fe 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -88,7 +88,7 @@ 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;
 
@@ -568,7 +568,6 @@ 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);
 }
 
-- 
2.25.1