linux-kernel - [PATCH] drbd: mark symbols static where possible

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Date:   Thu,  1 Sep 2016 18:57:53 +0800
From:   Baoyou Xie <baoyou.xie@...aro.org>
To:     philipp.reisner@...bit.com, lars.ellenberg@...bit.com
Cc:     drbd-dev@...ts.linbit.com, linux-kernel@...r.kernel.org,
        arnd@...db.de, baoyou.xie@...aro.org, xie.baoyou@....com.cn
Subject: [PATCH] drbd: mark symbols static where possible

We get a few warnings when building kernel with W=1:
drivers/block/drbd/drbd_receiver.c:1224:6: warning: no previous prototype for 'one_flush_endio' [-Wmissing-prototypes]
drivers/block/drbd/drbd_req.c:1450:6: warning: no previous prototype for 'send_and_submit_pending' [-Wmissing-prototypes]
drivers/block/drbd/drbd_main.c:924:6: warning: no previous prototype for 'assign_p_sizes_qlim' [-Wmissing-prototypes]
....

In fact, these functions are only used in the file in which they are
declared and don't need a declaration, but can be made static.
So this patch marks these functions with 'static'.

Signed-off-by: Baoyou Xie <baoyou.xie@...aro.org>
---
 drivers/block/drbd/drbd_main.c     | 4 +++-
 drivers/block/drbd/drbd_receiver.c | 2 +-
 drivers/block/drbd/drbd_req.c      | 3 ++-
 drivers/block/drbd/drbd_worker.c   | 3 ++-
 4 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 100be55..f0aa746 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -921,7 +921,9 @@ void drbd_gen_and_send_sync_uuid(struct drbd_peer_device *peer_device)
 }
 
 /* communicated if (agreed_features & DRBD_FF_WSAME) */
-void assign_p_sizes_qlim(struct drbd_device *device, struct p_sizes *p, struct request_queue *q)
+static void
+assign_p_sizes_qlim(struct drbd_device *device, struct p_sizes *p,
+					struct request_queue *q)
 {
 	if (q) {
 		p->qlim->physical_block_size = cpu_to_be32(queue_physical_block_size(q));
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 942384f..432f39a 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -1221,7 +1221,7 @@ struct one_flush_context {
 	struct issue_flush_context *ctx;
 };
 
-void one_flush_endio(struct bio *bio)
+static void one_flush_endio(struct bio *bio)
 {
 	struct one_flush_context *octx = bio->bi_private;
 	struct drbd_device *device = octx->device;
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index de279fe..c725bf5 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -1447,7 +1447,8 @@ static bool prepare_al_transaction_nonblock(struct drbd_device *device,
 	return !list_empty(pending);
 }
 
-void send_and_submit_pending(struct drbd_device *device, struct list_head *pending)
+static void
+send_and_submit_pending(struct drbd_device *device, struct list_head *pending)
 {
 	struct drbd_request *req, *tmp;
 
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index c6755c9..70f2706 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -194,7 +194,8 @@ void drbd_peer_request_endio(struct bio *bio)
 	}
 }
 
-void drbd_panic_after_delayed_completion_of_aborted_request(struct drbd_device *device)
+static void
+drbd_panic_after_delayed_completion_of_aborted_request(struct drbd_device *device)
 {
 	panic("drbd%u %s/%u potential random memory corruption caused by delayed completion of aborted local request\n",
 		device->minor, device->resource->name, device->vnr);
-- 
2.7.4