1 files changed, 0 insertions, 278 deletions
diff --git a/ANDROID_3.4.5/fs/nfs/pnfs_dev.c b/ANDROID_3.4.5/fs/nfs/pnfs_dev.c
deleted file mode 100644
index 73f701f1..00000000
--- a/ANDROID_3.4.5/fs/nfs/pnfs_dev.c
+++ /dev/null
@@ -1,278 +0,0 @@
-/*
- *  Device operations for the pnfs client.
- *
- *  Copyright (c) 2002
- *  The Regents of the University of Michigan
- *  All Rights Reserved
- *
- *  Dean Hildebrand <dhildebz@umich.edu>
- *  Garth Goodson   <Garth.Goodson@netapp.com>
- *
- *  Permission is granted to use, copy, create derivative works, and
- *  redistribute this software and such derivative works for any purpose,
- *  so long as the name of the University of Michigan is not used in
- *  any advertising or publicity pertaining to the use or distribution
- *  of this software without specific, written prior authorization. If
- *  the above copyright notice or any other identification of the
- *  University of Michigan is included in any copy of any portion of
- *  this software, then the disclaimer below must also be included.
- *
- *  This software is provided as is, without representation or warranty
- *  of any kind either express or implied, including without limitation
- *  the implied warranties of merchantability, fitness for a particular
- *  purpose, or noninfringement.  The Regents of the University of
- *  Michigan shall not be liable for any damages, including special,
- *  indirect, incidental, or consequential damages, with respect to any
- *  claim arising out of or in connection with the use of the software,
- *  even if it has been or is hereafter advised of the possibility of
- *  such damages.
- */
-
-#include <linux/export.h>
-#include "pnfs.h"
-
-#define NFSDBG_FACILITY		NFSDBG_PNFS
-
-/*
- * Device ID RCU cache. A device ID is unique per server and layout type.
- */
-#define NFS4_DEVICE_ID_HASH_BITS	5
-#define NFS4_DEVICE_ID_HASH_SIZE	(1 << NFS4_DEVICE_ID_HASH_BITS)
-#define NFS4_DEVICE_ID_HASH_MASK	(NFS4_DEVICE_ID_HASH_SIZE - 1)
-
-static struct hlist_head nfs4_deviceid_cache[NFS4_DEVICE_ID_HASH_SIZE];
-static DEFINE_SPINLOCK(nfs4_deviceid_lock);
-
-#ifdef NFS_DEBUG
-void
-nfs4_print_deviceid(const struct nfs4_deviceid *id)
-{
-	u32 *p = (u32 *)id;
-
-	dprintk("%s: device id= [%x%x%x%x]\n", __func__,
-		p[0], p[1], p[2], p[3]);
-}
-EXPORT_SYMBOL_GPL(nfs4_print_deviceid);
-#endif
-
-static inline u32
-nfs4_deviceid_hash(const struct nfs4_deviceid *id)
-{
-	unsigned char *cptr = (unsigned char *)id->data;
-	unsigned int nbytes = NFS4_DEVICEID4_SIZE;
-	u32 x = 0;
-
-	while (nbytes--) {
-		x *= 37;
-		x += *cptr++;
-	}
-	return x & NFS4_DEVICE_ID_HASH_MASK;
-}
-
-static struct nfs4_deviceid_node *
-_lookup_deviceid(const struct pnfs_layoutdriver_type *ld,
-		 const struct nfs_client *clp, const struct nfs4_deviceid *id,
-		 long hash)
-{
-	struct nfs4_deviceid_node *d;
-	struct hlist_node *n;
-
-	hlist_for_each_entry_rcu(d, n, &nfs4_deviceid_cache[hash], node)
-		if (d->ld == ld && d->nfs_client == clp &&
-		    !memcmp(&d->deviceid, id, sizeof(*id))) {
-			if (atomic_read(&d->ref))
-				return d;
-			else
-				continue;
-		}
-	return NULL;
-}
-
-/*
- * Lookup a deviceid in cache and get a reference count on it if found
- *
- * @clp nfs_client associated with deviceid
- * @id deviceid to look up
- */
-static struct nfs4_deviceid_node *
-_find_get_deviceid(const struct pnfs_layoutdriver_type *ld,
-		   const struct nfs_client *clp, const struct nfs4_deviceid *id,
-		   long hash)
-{
-	struct nfs4_deviceid_node *d;
-
-	rcu_read_lock();
-	d = _lookup_deviceid(ld, clp, id, hash);
-	if (d != NULL)
-		atomic_inc(&d->ref);
-	rcu_read_unlock();
-	return d;
-}
-
-struct nfs4_deviceid_node *
-nfs4_find_get_deviceid(const struct pnfs_layoutdriver_type *ld,
-		       const struct nfs_client *clp, const struct nfs4_deviceid *id)
-{
-	return _find_get_deviceid(ld, clp, id, nfs4_deviceid_hash(id));
-}
-EXPORT_SYMBOL_GPL(nfs4_find_get_deviceid);
-
-/*
- * Remove a deviceid from cache
- *
- * @clp nfs_client associated with deviceid
- * @id the deviceid to unhash
- *
- * @ret the unhashed node, if found and dereferenced to zero, NULL otherwise.
- */
-void
-nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *ld,
-			 const struct nfs_client *clp, const struct nfs4_deviceid *id)
-{
-	struct nfs4_deviceid_node *d;
-
-	spin_lock(&nfs4_deviceid_lock);
-	rcu_read_lock();
-	d = _lookup_deviceid(ld, clp, id, nfs4_deviceid_hash(id));
-	rcu_read_unlock();
-	if (!d) {
-		spin_unlock(&nfs4_deviceid_lock);
-		return;
-	}
-	hlist_del_init_rcu(&d->node);
-	spin_unlock(&nfs4_deviceid_lock);
-	synchronize_rcu();
-
-	/* balance the initial ref set in pnfs_insert_deviceid */
-	if (atomic_dec_and_test(&d->ref))
-		d->ld->free_deviceid_node(d);
-}
-EXPORT_SYMBOL_GPL(nfs4_delete_deviceid);
-
-void
-nfs4_init_deviceid_node(struct nfs4_deviceid_node *d,
-			const struct pnfs_layoutdriver_type *ld,
-			const struct nfs_client *nfs_client,
-			const struct nfs4_deviceid *id)
-{
-	INIT_HLIST_NODE(&d->node);
-	INIT_HLIST_NODE(&d->tmpnode);
-	d->ld = ld;
-	d->nfs_client = nfs_client;
-	d->flags = 0;
-	d->deviceid = *id;
-	atomic_set(&d->ref, 1);
-}
-EXPORT_SYMBOL_GPL(nfs4_init_deviceid_node);
-
-/*
- * Uniquely initialize and insert a deviceid node into cache
- *
- * @new new deviceid node
- *      Note that the caller must set up the following members:
- *        new->ld
- *        new->nfs_client
- *        new->deviceid
- *
- * @ret the inserted node, if none found, otherwise, the found entry.
- */
-struct nfs4_deviceid_node *
-nfs4_insert_deviceid_node(struct nfs4_deviceid_node *new)
-{
-	struct nfs4_deviceid_node *d;
-	long hash;
-
-	spin_lock(&nfs4_deviceid_lock);
-	hash = nfs4_deviceid_hash(&new->deviceid);
-	d = _find_get_deviceid(new->ld, new->nfs_client, &new->deviceid, hash);
-	if (d) {
-		spin_unlock(&nfs4_deviceid_lock);
-		return d;
-	}
-
-	hlist_add_head_rcu(&new->node, &nfs4_deviceid_cache[hash]);
-	spin_unlock(&nfs4_deviceid_lock);
-	atomic_inc(&new->ref);
-
-	return new;
-}
-EXPORT_SYMBOL_GPL(nfs4_insert_deviceid_node);
-
-/*
- * Dereference a deviceid node and delete it when its reference count drops
- * to zero.
- *
- * @d deviceid node to put
- *
- * return true iff the node was deleted
- * Note that since the test for d->ref == 0 is sufficient to establish
- * that the node is no longer hashed in the global device id cache.
- */
-bool
-nfs4_put_deviceid_node(struct nfs4_deviceid_node *d)
-{
-	if (!atomic_dec_and_test(&d->ref))
-		return false;
-	d->ld->free_deviceid_node(d);
-	return true;
-}
-EXPORT_SYMBOL_GPL(nfs4_put_deviceid_node);
-
-static void
-_deviceid_purge_client(const struct nfs_client *clp, long hash)
-{
-	struct nfs4_deviceid_node *d;
-	struct hlist_node *n;
-	HLIST_HEAD(tmp);
-
-	spin_lock(&nfs4_deviceid_lock);
-	rcu_read_lock();
-	hlist_for_each_entry_rcu(d, n, &nfs4_deviceid_cache[hash], node)
-		if (d->nfs_client == clp && atomic_read(&d->ref)) {
-			hlist_del_init_rcu(&d->node);
-			hlist_add_head(&d->tmpnode, &tmp);
-		}
-	rcu_read_unlock();
-	spin_unlock(&nfs4_deviceid_lock);
-
-	if (hlist_empty(&tmp))
-		return;
-
-	synchronize_rcu();
-	while (!hlist_empty(&tmp)) {
-		d = hlist_entry(tmp.first, struct nfs4_deviceid_node, tmpnode);
-		hlist_del(&d->tmpnode);
-		if (atomic_dec_and_test(&d->ref))
-			d->ld->free_deviceid_node(d);
-	}
-}
-
-void
-nfs4_deviceid_purge_client(const struct nfs_client *clp)
-{
-	long h;
-
-	if (!(clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_MDS))
-		return;
-	for (h = 0; h < NFS4_DEVICE_ID_HASH_SIZE; h++)
-		_deviceid_purge_client(clp, h);
-}
-
-/*
- * Stop use of all deviceids associated with an nfs_client
- */
-void
-nfs4_deviceid_mark_client_invalid(struct nfs_client *clp)
-{
-	struct nfs4_deviceid_node *d;
-	struct hlist_node *n;
-	int i;
-
-	rcu_read_lock();
-	for (i = 0; i < NFS4_DEVICE_ID_HASH_SIZE; i ++){
-		hlist_for_each_entry_rcu(d, n, &nfs4_deviceid_cache[i], node)
-			if (d->nfs_client == clp)
-				set_bit(NFS_DEVICEID_INVALID, &d->flags);
-	}
-	rcu_read_unlock();
-}