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9p: Remove p9_idpool 

There are no more users left of the p9_idpool; delete it.

Link: http://lkml.kernel.org/r/20180711210225.19730-7-willy@infradead.org
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@sandia.gov>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
This commit is contained in:
Matthew Wilcox 2018-07-11 14:02:25 -07:00 committed by Dominique Martinet
parent 996d5b4db4
commit 6348b903d7
3 changed files with 0 additions and 149 deletions
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8
include/net/9p/9p.h
View File

@ -561,16 +561,8 @@ struct p9_fcall {
u8 *sdata;
};
struct p9_idpool;
int p9_errstr2errno(char *errstr, int len);
struct p9_idpool *p9_idpool_create(void);
void p9_idpool_destroy(struct p9_idpool *);
int p9_idpool_get(struct p9_idpool *p);
void p9_idpool_put(int id, struct p9_idpool *p);
int p9_idpool_check(int id, struct p9_idpool *p);
int p9_error_init(void);
int p9_trans_fd_init(void);
void p9_trans_fd_exit(void);

1
net/9p/Makefile
View File

@ -8,7 +8,6 @@ obj-$(CONFIG_NET_9P_RDMA) += 9pnet_rdma.o
mod.o \
client.o \
error.o \
util.o \
protocol.o \
trans_fd.o \
trans_common.o \

140
net/9p/util.c
View File

@ -1,140 +0,0 @@
/*
* net/9p/util.c
*
* This file contains some helper functions
*
* Copyright (C) 2007 by Latchesar Ionkov <lucho@ionkov.net>
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to:
* Free Software Foundation
* 51 Franklin Street, Fifth Floor
* Boston, MA 02111-1301 USA
*
*/
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/parser.h>
#include <linux/idr.h>
#include <linux/slab.h>
#include <net/9p/9p.h>
/**
* struct p9_idpool - per-connection accounting for tag idpool
* @lock: protects the pool
* @pool: idr to allocate tag id from
*
*/
struct p9_idpool {
spinlock_t lock;
struct idr pool;
};
/**
* p9_idpool_create - create a new per-connection id pool
*
*/
struct p9_idpool *p9_idpool_create(void)
{
struct p9_idpool *p;
p = kmalloc(sizeof(struct p9_idpool), GFP_KERNEL);
if (!p)
return ERR_PTR(-ENOMEM);
spin_lock_init(&p->lock);
idr_init(&p->pool);
return p;
}
EXPORT_SYMBOL(p9_idpool_create);
/**
* p9_idpool_destroy - create a new per-connection id pool
* @p: idpool to destroy
*/
void p9_idpool_destroy(struct p9_idpool *p)
{
idr_destroy(&p->pool);
kfree(p);
}
EXPORT_SYMBOL(p9_idpool_destroy);
/**
* p9_idpool_get - allocate numeric id from pool
* @p: pool to allocate from
*
* Bugs: This seems to be an awful generic function, should it be in idr.c with
* the lock included in struct idr?
*/
int p9_idpool_get(struct p9_idpool *p)
{
int i;
unsigned long flags;
idr_preload(GFP_NOFS);
spin_lock_irqsave(&p->lock, flags);
/* no need to store exactly p, we just need something non-null */
i = idr_alloc(&p->pool, p, 0, 0, GFP_NOWAIT);
spin_unlock_irqrestore(&p->lock, flags);
idr_preload_end();
if (i < 0)
return -1;
p9_debug(P9_DEBUG_MUX, " id %d pool %p\n", i, p);
return i;
}
EXPORT_SYMBOL(p9_idpool_get);
/**
* p9_idpool_put - release numeric id from pool
* @id: numeric id which is being released
* @p: pool to release id into
*
* Bugs: This seems to be an awful generic function, should it be in idr.c with
* the lock included in struct idr?
*/
void p9_idpool_put(int id, struct p9_idpool *p)
{
unsigned long flags;
p9_debug(P9_DEBUG_MUX, " id %d pool %p\n", id, p);
spin_lock_irqsave(&p->lock, flags);
idr_remove(&p->pool, id);
spin_unlock_irqrestore(&p->lock, flags);
}
EXPORT_SYMBOL(p9_idpool_put);
/**
* p9_idpool_check - check if the specified id is available
* @id: id to check
* @p: pool to check
*/
int p9_idpool_check(int id, struct p9_idpool *p)
{
return idr_find(&p->pool, id) != NULL;
}
EXPORT_SYMBOL(p9_idpool_check);