1 files changed, 0 insertions, 171 deletions

diff --git a/drivers/staging/pohmelfs/mcache.c b/drivers/staging/pohmelfs/mcache.c
deleted file mode 100644
index e22665cdd16c..000000000000
--- a/drivers/staging/pohmelfs/mcache.c
+++ /dev/null
@@ -1,171 +0,0 @@
-/*
- * 2007+ Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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.
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/mempool.h>
-
-#include "netfs.h"
-
-static struct kmem_cache *pohmelfs_mcache_cache;
-static mempool_t *pohmelfs_mcache_pool;
-
-static inline int pohmelfs_mcache_cmp(u64 gen, u64 new)
-{
-	if (gen < new)
-		return 1;
-	if (gen > new)
-		return -1;
-	return 0;
-}
-
-struct pohmelfs_mcache *pohmelfs_mcache_search(struct pohmelfs_sb *psb, u64 gen)
-{
-	struct rb_root *root = &psb->mcache_root;
-	struct rb_node *n = root->rb_node;
-	struct pohmelfs_mcache *tmp, *ret = NULL;
-	int cmp;
-
-	while (n) {
-		tmp = rb_entry(n, struct pohmelfs_mcache, mcache_entry);
-
-		cmp = pohmelfs_mcache_cmp(tmp->gen, gen);
-		if (cmp < 0)
-			n = n->rb_left;
-		else if (cmp > 0)
-			n = n->rb_right;
-		else {
-			ret = tmp;
-			pohmelfs_mcache_get(ret);
-			break;
-		}
-	}
-
-	return ret;
-}
-
-static int pohmelfs_mcache_insert(struct pohmelfs_sb *psb, struct pohmelfs_mcache *m)
-{
-	struct rb_root *root = &psb->mcache_root;
-	struct rb_node **n = &root->rb_node, *parent = NULL;
-	struct pohmelfs_mcache *ret = NULL, *tmp;
-	int cmp;
-
-	while (*n) {
-		parent = *n;
-
-		tmp = rb_entry(parent, struct pohmelfs_mcache, mcache_entry);
-
-		cmp = pohmelfs_mcache_cmp(tmp->gen, m->gen);
-		if (cmp < 0)
-			n = &parent->rb_left;
-		else if (cmp > 0)
-			n = &parent->rb_right;
-		else {
-			ret = tmp;
-			break;
-		}
-	}
-
-	if (ret)
-		return -EEXIST;
-
-	rb_link_node(&m->mcache_entry, parent, n);
-	rb_insert_color(&m->mcache_entry, root);
-
-	return 0;
-}
-
-static int pohmelfs_mcache_remove(struct pohmelfs_sb *psb, struct pohmelfs_mcache *m)
-{
-	if (m && m->mcache_entry.rb_parent_color) {
-		rb_erase(&m->mcache_entry, &psb->mcache_root);
-		m->mcache_entry.rb_parent_color = 0;
-		return 1;
-	}
-	return 0;
-}
-
-void pohmelfs_mcache_remove_locked(struct pohmelfs_sb *psb, struct pohmelfs_mcache *m)
-{
-	mutex_lock(&psb->mcache_lock);
-	pohmelfs_mcache_remove(psb, m);
-	mutex_unlock(&psb->mcache_lock);
-}
-
-struct pohmelfs_mcache *pohmelfs_mcache_alloc(struct pohmelfs_sb *psb, u64 start,
-		unsigned int size, void *data)
-{
-	struct pohmelfs_mcache *m;
-	int err = -ENOMEM;
-
-	m = mempool_alloc(pohmelfs_mcache_pool, GFP_KERNEL);
-	if (!m)
-		goto err_out_exit;
-
-	init_completion(&m->complete);
-	m->err = 0;
-	atomic_set(&m->refcnt, 1);
-	m->data = data;
-	m->start = start;
-	m->size = size;
-	m->gen = atomic_long_inc_return(&psb->mcache_gen);
-
-	mutex_lock(&psb->mcache_lock);
-	err = pohmelfs_mcache_insert(psb, m);
-	mutex_unlock(&psb->mcache_lock);
-	if (err)
-		goto err_out_free;
-
-	return m;
-
-err_out_free:
-	mempool_free(m, pohmelfs_mcache_pool);
-err_out_exit:
-	return ERR_PTR(err);
-}
-
-void pohmelfs_mcache_free(struct pohmelfs_sb *psb, struct pohmelfs_mcache *m)
-{
-	pohmelfs_mcache_remove_locked(psb, m);
-
-	mempool_free(m, pohmelfs_mcache_pool);
-}
-
-int __init pohmelfs_mcache_init(void)
-{
-	pohmelfs_mcache_cache = kmem_cache_create("pohmelfs_mcache_cache",
-				sizeof(struct pohmelfs_mcache),
-				0, (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD), NULL);
-	if (!pohmelfs_mcache_cache)
-		goto err_out_exit;
-
-	pohmelfs_mcache_pool = mempool_create_slab_pool(256, pohmelfs_mcache_cache);
-	if (!pohmelfs_mcache_pool)
-		goto err_out_free;
-
-	return 0;
-
-err_out_free:
-	kmem_cache_destroy(pohmelfs_mcache_cache);
-err_out_exit:
-	return -ENOMEM;
-}
-
-void pohmelfs_mcache_exit(void)
-{
-	mempool_destroy(pohmelfs_mcache_pool);
-	kmem_cache_destroy(pohmelfs_mcache_cache);
-}