linux-kernel - [RFC PATCH] dlm: Remove unused conf from lm

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Message-ID: <1404220810.2717.39.camel@joe-AO725>
Date:	Tue, 01 Jul 2014 06:20:10 -0700
From:	Joe Perches <joe@...ches.com>
To:	Christine Caulfield <ccaulfie@...hat.com>,
	David Teigland <teigland@...hat.com>,
	Trond Myklebust <trond.myklebust@...marydata.com>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Jeff Layton <jlayton@...chiereds.net>
Cc:	cluster-devel@...hat.com, linux-kernel@...r.kernel.org,
	linux-nfs@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: [RFC PATCH] dlm: Remove unused conf from lm_grant

While doing a bit of adding argument names to fs.h,
I looked at lm_grant and it seems the 2nd argument
is always NULL.

How about removing it?

This doesn't apply as it depends on some other patches
but it should be clear enough...

---
 fs/dlm/plock.c     |  8 ++++----
 fs/lockd/svclock.c | 12 +++---------
 include/linux/fs.h |  2 +-
 3 files changed, 8 insertions(+), 14 deletions(-)

diff --git a/fs/dlm/plock.c b/fs/dlm/plock.c
index e59d332..e0ab3a9 100644
--- a/fs/dlm/plock.c
+++ b/fs/dlm/plock.c
@@ -30,7 +30,7 @@ struct plock_op {
 
 struct plock_xop {
 	struct plock_op xop;
-	int (*callback)(struct file_lock *, struct file_lock *, int);
+	int (*callback)(struct file_lock *fl, int result);
 	void *fl;
 	void *file;
 	struct file_lock flc;
@@ -190,7 +190,7 @@ static int dlm_plock_callback(struct plock_op *op)
 	struct file *file;
 	struct file_lock *fl;
 	struct file_lock *flc;
-	int (*notify)(struct file_lock *fl, struct file_lock *cont, int result) = NULL;
+	int (*notify)(struct file_lock *fl, int result) = NULL;
 	struct plock_xop *xop = (struct plock_xop *)op;
 	int rv = 0;
 
@@ -209,7 +209,7 @@ static int dlm_plock_callback(struct plock_op *op)
 	notify = xop->callback;
 
 	if (op->info.rv) {
-		notify(fl, NULL, op->info.rv);
+		notify(fl, op->info.rv);
 		goto out;
 	}
 
@@ -228,7 +228,7 @@ static int dlm_plock_callback(struct plock_op *op)
 			  (unsigned long long)op->info.number, file, fl);
 	}
 
-	rv = notify(fl, NULL, 0);
+	rv = notify(fl, 0);
 	if (rv) {
 		/* XXX: We need to cancel the fs lock here: */
 		log_print("dlm_plock_callback: lock granted after lock request "
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index ab798a8..2a61701 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -667,22 +667,16 @@ nlmsvc_cancel_blocked(struct net *net, struct nlm_file *file, struct nlm_lock *l
  * deferred rpc for GETLK and SETLK.
  */
 static void
-nlmsvc_update_deferred_block(struct nlm_block *block, struct file_lock *conf,
-			     int result)
+nlmsvc_update_deferred_block(struct nlm_block *block, int result)
 {
 	block->b_flags |= B_GOT_CALLBACK;
 	if (result == 0)
 		block->b_granted = 1;
 	else
 		block->b_flags |= B_TIMED_OUT;
-	if (conf) {
-		if (block->b_fl)
-			__locks_copy_lock(block->b_fl, conf);
-	}
 }
 
-static int nlmsvc_grant_deferred(struct file_lock *fl, struct file_lock *conf,
-					int result)
+static int nlmsvc_grant_deferred(struct file_lock *fl, int result)
 {
 	struct nlm_block *block;
 	int rc = -ENOENT;
@@ -697,7 +691,7 @@ static int nlmsvc_grant_deferred(struct file_lock *fl, struct file_lock *conf,
 					rc = -ENOLCK;
 					break;
 				}
-				nlmsvc_update_deferred_block(block, conf, result);
+				nlmsvc_update_deferred_block(block, result);
 			} else if (result == 0)
 				block->b_granted = 1;
 
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 36b8648..6150125 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -842,7 +842,7 @@ struct lock_manager_operations {
 	int (*lm_compare_owner)(struct file_lock *fl1, struct file_lock *fl2);
 	unsigned long (*lm_owner_key)(struct file_lock *fl);
 	void (*lm_notify)(struct file_lock *fl);	/* unblock callback */
-	int (*lm_grant)(struct file_lock *fl, struct file_lock *conf, int result);
+	int (*lm_grant)(struct file_lock *fl, int result);
 	void (*lm_break)(struct file_lock *fl);
 	int (*lm_change)(struct file_lock **fl, int type);
 };
-- 
1.8.1.2.459.gbcd45b4.dirty



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