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authorMatthew Wilcox <willy@infradead.org>2018-07-11 14:02:25 -0700
committerDominique Martinet <dominique.martinet@cea.fr>2018-08-29 13:39:57 +0900
commit6348b903d79119a8157aace08ab99521f5dba139 (patch)
tree08f038b40e025f0a842b0db31330d1b7080e093c /net/9p
parent996d5b4db4b191f2676cf8775565cab8a5e2753b (diff)
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>
Diffstat (limited to 'net/9p')
-rw-r--r--net/9p/Makefile1
-rw-r--r--net/9p/util.c140
2 files changed, 0 insertions, 141 deletions
diff --git a/net/9p/Makefile b/net/9p/Makefile
index c0486cfc85d9..aa0a5641e5d0 100644
--- a/net/9p/Makefile
+++ b/net/9p/Makefile
@@ -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 \
diff --git a/net/9p/util.c b/net/9p/util.c
deleted file mode 100644
index 55ad98277e85..000000000000
--- a/net/9p/util.c
+++ /dev/null
@@ -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);