Commit 593ce16b authored by Pavel Emelyanov's avatar Pavel Emelyanov Committed by J. Bruce Fields
Browse files

sunrpc: Add routines that allow registering per-net caches 



Existing calls do the same, but for the init_net.

Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent 352114f3

include/linux/sunrpc/cache.h

+2 −0
Original line number Diff line number Diff line
@@ -197,7 +197,9 @@ extern void cache_purge(struct cache_detail *detail); 
#define NEVER (0x7FFFFFFF)

extern void __init cache_initialize(void);

extern int cache_register(struct cache_detail *cd);

extern int cache_register_net(struct cache_detail *cd, struct net *net);

extern void cache_unregister(struct cache_detail *cd);

extern void cache_unregister_net(struct cache_detail *cd, struct net *net);



extern int sunrpc_cache_register_pipefs(struct dentry *parent, const char *,

					mode_t, struct cache_detail *);

net/sunrpc/cache.c

+19 −8
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ 
#include <linux/sunrpc/cache.h>

#include <linux/sunrpc/stats.h>

#include <linux/sunrpc/rpc_pipe_fs.h>

#include <net/net_namespace.h>



#define	 RPCDBG_FACILITY RPCDBG_CACHE
@@ -1537,7 +1538,7 @@ static const struct file_operations cache_flush_operations_procfs = { 
	.release	= release_flush_procfs,

};



static void remove_cache_proc_entries(struct cache_detail *cd)

static void remove_cache_proc_entries(struct cache_detail *cd, struct net *net)

{

	if (cd->u.procfs.proc_ent == NULL)

		return;
@@ -1552,7 +1553,7 @@ static void remove_cache_proc_entries(struct cache_detail *cd) 
}



#ifdef CONFIG_PROC_FS

static int create_cache_proc_entries(struct cache_detail *cd)

static int create_cache_proc_entries(struct cache_detail *cd, struct net *net)

{

	struct proc_dir_entry *p;
@@ -1587,11 +1588,11 @@ static int create_cache_proc_entries(struct cache_detail *cd) 
	}

	return 0;

out_nomem:

	remove_cache_proc_entries(cd);

	remove_cache_proc_entries(cd, net);

	return -ENOMEM;

}

#else /* CONFIG_PROC_FS */

static int create_cache_proc_entries(struct cache_detail *cd)

static int create_cache_proc_entries(struct cache_detail *cd, struct net *net)

{

	return 0;

}
@@ -1602,23 +1603,33 @@ void __init cache_initialize(void) 
	INIT_DELAYED_WORK_DEFERRABLE(&cache_cleaner, do_cache_clean);

}



int cache_register(struct cache_detail *cd)

int cache_register_net(struct cache_detail *cd, struct net *net)

{

	int ret;



	sunrpc_init_cache_detail(cd);

	ret = create_cache_proc_entries(cd);

	ret = create_cache_proc_entries(cd, net);

	if (ret)

		sunrpc_destroy_cache_detail(cd);

	return ret;

}



int cache_register(struct cache_detail *cd)

{

	return cache_register_net(cd, &init_net);

}

EXPORT_SYMBOL_GPL(cache_register);



void cache_unregister(struct cache_detail *cd)

void cache_unregister_net(struct cache_detail *cd, struct net *net)

{

	remove_cache_proc_entries(cd);

	remove_cache_proc_entries(cd, net);

	sunrpc_destroy_cache_detail(cd);

}



void cache_unregister(struct cache_detail *cd)

{

	cache_unregister_net(cd, &init_net);

}

EXPORT_SYMBOL_GPL(cache_unregister);



static ssize_t cache_read_pipefs(struct file *filp, char __user *buf,