linux-kernel - [RFC 5/7] Use external declaration for filep

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Date:	Fri, 17 Nov 2006 21:44:08 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	linux-kernel@...r.kernel.org
Cc:	linux-mm@...ck.org, Pekka Enberg <penberg@...helsinki.fi>,
	Christoph Lameter <clameter@....com>,
	Manfred Spraul <manfred@...orfullife.com>
Subject: [RFC 5/7] Use external declaration for filep_cachep

Use external declaration for filep_cachep.

filp_cachep is used in fs/file_table.c. Its defined in fs/dcache.c.
The easiest solution here is to add an external declaration to
fs/file_table.c.

Signed-off-by: Christoph Lameter <clameter@....com>

Index: linux-2.6.19-rc5-mm2/include/linux/slab.h
===================================================================
--- linux-2.6.19-rc5-mm2.orig/include/linux/slab.h	2006-11-17 23:03:59.268512148 -0600
+++ linux-2.6.19-rc5-mm2/include/linux/slab.h	2006-11-17 23:04:05.859898302 -0600
@@ -298,7 +298,6 @@ static inline void kmem_set_shrinker(kme
 
 /* System wide caches */
 extern kmem_cache_t	*names_cachep;
-extern kmem_cache_t	*filp_cachep;
 extern kmem_cache_t	*fs_cachep;
 
 #endif	/* __KERNEL__ */
Index: linux-2.6.19-rc5-mm2/fs/file_table.c
===================================================================
--- linux-2.6.19-rc5-mm2.orig/fs/file_table.c	2006-11-15 16:47:59.622264626 -0600
+++ linux-2.6.19-rc5-mm2/fs/file_table.c	2006-11-17 23:04:05.885291107 -0600
@@ -35,6 +35,8 @@ __cacheline_aligned_in_smp DEFINE_SPINLO
 
 static struct percpu_counter nr_files __cacheline_aligned_in_smp;
 
+extern kmem_cache_t *filp_cachep;
+
 static inline void file_free_rcu(struct rcu_head *head)
 {
 	struct file *f =  container_of(head, struct file, f_u.fu_rcuhead);
-
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