linux-kernel - [PATCH 2/2] locks: remove fl_copy_lock lock

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Date:	Sun, 31 Oct 2010 08:35:31 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	"J. Bruce Fields" <bfields@...ldses.org>
Cc:	Arnd Bergmann <arnd@...db.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Bryan Schumaker <bjschuma@...app.com>,
	linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] locks: remove fl_copy_lock lock_manager operation

This one was only used for a nasty hack in nfsd, which has recently
been removed.

Signed-off-by: Christoph Hellwig <hch@....de>

Index: linux-2.6/fs/locks.c
===================================================================
--- linux-2.6.orig/fs/locks.c	2010-10-31 07:10:07.649004084 -0400
+++ linux-2.6/fs/locks.c	2010-10-31 07:34:10.102255587 -0400
@@ -235,11 +235,8 @@ static void locks_copy_private(struct fi
 			fl->fl_ops->fl_copy_lock(new, fl);
 		new->fl_ops = fl->fl_ops;
 	}
-	if (fl->fl_lmops) {
-		if (fl->fl_lmops->fl_copy_lock)
-			fl->fl_lmops->fl_copy_lock(new, fl);
+	if (fl->fl_lmops)
 		new->fl_lmops = fl->fl_lmops;
-	}
 }
 
 /*
Index: linux-2.6/Documentation/filesystems/Locking
===================================================================
--- linux-2.6.orig/Documentation/filesystems/Locking	2010-10-31 07:34:13.269012536 -0400
+++ linux-2.6/Documentation/filesystems/Locking	2010-10-31 07:34:20.567292713 -0400
@@ -322,7 +322,6 @@ fl_release_private:	yes	yes
 prototypes:
 	int (*fl_compare_owner)(struct file_lock *, struct file_lock *);
 	void (*fl_notify)(struct file_lock *);  /* unblock callback */
-	void (*fl_copy_lock)(struct file_lock *, struct file_lock *);
 	void (*fl_release_private)(struct file_lock *);
 	void (*fl_break)(struct file_lock *); /* break_lease callback */
 
@@ -330,7 +329,6 @@ locking rules:
 			BKL	may block
 fl_compare_owner:	yes	no
 fl_notify:		yes	no
-fl_copy_lock:		yes	no
 fl_release_private:	yes	yes
 fl_break:		yes	no
 
Index: linux-2.6/include/linux/fs.h
===================================================================
--- linux-2.6.orig/include/linux/fs.h	2010-10-31 07:33:13.131262640 -0400
+++ linux-2.6/include/linux/fs.h	2010-10-31 07:33:25.959005833 -0400
@@ -1056,7 +1056,6 @@ struct lock_manager_operations {
 	int (*fl_compare_owner)(struct file_lock *, struct file_lock *);
 	void (*fl_notify)(struct file_lock *);	/* unblock callback */
 	int (*fl_grant)(struct file_lock *, struct file_lock *, int);
-	void (*fl_copy_lock)(struct file_lock *, struct file_lock *);
 	void (*fl_release_private)(struct file_lock *);
 	void (*fl_break)(struct file_lock *);
 	int (*fl_mylease)(struct file_lock *, struct file_lock *);
--
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