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From: Benny Halevy <bhalevy@panasas.com>
To: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Boaz Harrosh <bharrosh@panasas.com>, linux-nfs@vger.kernel.org
Subject: [PATCH v8 07/32] NFSv4.1: use layout driver in global device cache
Date: Thu, 26 May 2011 00:27:18 +0300	[thread overview]
Message-ID: <1306358838-17040-1-git-send-email-bhalevy@panasas.com> (raw)
In-Reply-To: <4DDD7392.6040505@panasas.com>

pnfs deviceids are unique per server, per layout type.
struct nfs_client is currently used to distinguish deviceids from
different nfs servers, yet these may clash between different layout
types on the same server.  Therefore, use the layout driver associated
with each deviceid at insertion time to look it up, unhash, or
delete it.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
---
 fs/nfs/callback_proc.c  |    2 +-
 fs/nfs/nfs4filelayout.c |    3 ++-
 fs/nfs/pnfs.h           |    6 +++---
 fs/nfs/pnfs_dev.c       |   28 +++++++++++++++++-----------
 4 files changed, 23 insertions(+), 16 deletions(-)

diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
index fb5e5b9..c73e7b2 100644
--- a/fs/nfs/callback_proc.c
+++ b/fs/nfs/callback_proc.c
@@ -278,7 +278,7 @@ __be32 nfs4_callback_devicenotify(struct cb_devicenotifyargs *args,
 		if (dev->cbd_notify_type == NOTIFY_DEVICEID4_CHANGE)
 			dprintk("%s: NOTIFY_DEVICEID4_CHANGE not supported, "
 				"deleting instead\n", __func__);
-		nfs4_delete_deviceid(clp, &dev->cbd_dev_id);
+		nfs4_delete_deviceid(server->pnfs_curr_ld, clp, &dev->cbd_dev_id);
 	}
 
 out:
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index cd289d9..501a9b8 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -441,7 +441,8 @@ filelayout_check_layout(struct pnfs_layout_hdr *lo,
 	}
 
 	/* find and reference the deviceid */
-	d = nfs4_find_get_deviceid(NFS_SERVER(lo->plh_inode)->nfs_client, id);
+	d = nfs4_find_get_deviceid(NFS_SERVER(lo->plh_inode)->pnfs_curr_ld,
+				   NFS_SERVER(lo->plh_inode)->nfs_client, id);
 	if (d == NULL) {
 		dsaddr = get_device_info(lo->plh_inode, id, gfp_flags);
 		if (dsaddr == NULL)
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 7f29e3a..b7f88d4 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -171,9 +171,9 @@ struct nfs4_deviceid_node {
 };
 
 void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id);
-struct nfs4_deviceid_node *nfs4_find_get_deviceid(const struct nfs_client *, const struct nfs4_deviceid *);
-struct nfs4_deviceid_node *nfs4_unhash_put_deviceid(const struct nfs_client *, const struct nfs4_deviceid *);
-void nfs4_delete_deviceid(const struct nfs_client *, const struct nfs4_deviceid *);
+struct nfs4_deviceid_node *nfs4_find_get_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *);
+struct nfs4_deviceid_node *nfs4_unhash_put_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *);
+void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *);
 void nfs4_init_deviceid_node(struct nfs4_deviceid_node *,
 			     const struct pnfs_layoutdriver_type *,
 			     const struct nfs_client *,
diff --git a/fs/nfs/pnfs_dev.c b/fs/nfs/pnfs_dev.c
index 8fd3839..c65e133 100644
--- a/fs/nfs/pnfs_dev.c
+++ b/fs/nfs/pnfs_dev.c
@@ -67,14 +67,16 @@ nfs4_deviceid_hash(const struct nfs4_deviceid *id)
 }
 
 static struct nfs4_deviceid_node *
-_lookup_deviceid(const struct nfs_client *clp, const struct nfs4_deviceid *id,
+_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->nfs_client == clp && !memcmp(&d->deviceid, id, sizeof(*id))) {
+		if (d->ld == ld && d->nfs_client == clp &&
+		    !memcmp(&d->deviceid, id, sizeof(*id))) {
 			if (atomic_read(&d->ref))
 				return d;
 			else
@@ -90,13 +92,14 @@ _lookup_deviceid(const struct nfs_client *clp, const struct nfs4_deviceid *id,
  * @id deviceid to look up
  */
 struct nfs4_deviceid_node *
-_find_get_deviceid(const struct nfs_client *clp, const struct nfs4_deviceid *id,
+_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(clp, id, hash);
+	d = _lookup_deviceid(ld, clp, id, hash);
 	if (d && !atomic_inc_not_zero(&d->ref))
 		d = NULL;
 	rcu_read_unlock();
@@ -104,9 +107,10 @@ _find_get_deviceid(const struct nfs_client *clp, const struct nfs4_deviceid *id,
 }
 
 struct nfs4_deviceid_node *
-nfs4_find_get_deviceid(const struct nfs_client *clp, const struct nfs4_deviceid *id)
+nfs4_find_get_deviceid(const struct pnfs_layoutdriver_type *ld,
+		       const struct nfs_client *clp, const struct nfs4_deviceid *id)
 {
-	return _find_get_deviceid(clp, id, nfs4_deviceid_hash(id));
+	return _find_get_deviceid(ld, clp, id, nfs4_deviceid_hash(id));
 }
 EXPORT_SYMBOL_GPL(nfs4_find_get_deviceid);
 
@@ -119,13 +123,14 @@ EXPORT_SYMBOL_GPL(nfs4_find_get_deviceid);
  * @ret the unhashed node, if found and dereferenced to zero, NULL otherwise.
  */
 struct nfs4_deviceid_node *
-nfs4_unhash_put_deviceid(const struct nfs_client *clp, const struct nfs4_deviceid *id)
+nfs4_unhash_put_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(clp, id, nfs4_deviceid_hash(id));
+	d = _lookup_deviceid(ld, clp, id, nfs4_deviceid_hash(id));
 	rcu_read_unlock();
 	if (!d) {
 		spin_unlock(&nfs4_deviceid_lock);
@@ -150,11 +155,12 @@ EXPORT_SYMBOL_GPL(nfs4_unhash_put_deviceid);
  * @id deviceid to delete
  */
 void
-nfs4_delete_deviceid(const struct nfs_client *clp, const struct nfs4_deviceid *id)
+nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *ld,
+		     const struct nfs_client *clp, const struct nfs4_deviceid *id)
 {
 	struct nfs4_deviceid_node *d;
 
-	d = nfs4_unhash_put_deviceid(clp, id);
+	d = nfs4_unhash_put_deviceid(ld, clp, id);
 	if (!d)
 		return;
 	d->ld->free_deviceid_node(d);
@@ -194,7 +200,7 @@ nfs4_insert_deviceid_node(struct nfs4_deviceid_node *new)
 
 	spin_lock(&nfs4_deviceid_lock);
 	hash = nfs4_deviceid_hash(&new->deviceid);
-	d = _find_get_deviceid(new->nfs_client, &new->deviceid, hash);
+	d = _find_get_deviceid(new->ld, new->nfs_client, &new->deviceid, hash);
 	if (d) {
 		spin_unlock(&nfs4_deviceid_lock);
 		return d;
-- 
1.7.3.4


  parent reply	other threads:[~2011-05-25 21:27 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-25 21:24 [PATCHSET v8 0/32] pnfs for 2.6.40 Benny Halevy
2011-05-25 21:26 ` [PATCH v8 01/32] NFSv4.1: fix typo in filelayout_check_layout Benny Halevy
2011-05-25 21:26 ` [PATCH v8 02/32] NFSv4.1: use struct nfs_client to qualify deviceid Benny Halevy
2011-05-25 21:26 ` [PATCH v8 03/32] pnfs: resolve header dependency in pnfs.h Benny Halevy
2011-05-25 21:26 ` [PATCH v8 04/32] NFSv4.1: make deviceid cache global Benny Halevy
2011-05-25 21:27 ` [PATCH v8 05/32] NFSv4.1: purge deviceid cache on nfs_free_client Benny Halevy
2011-05-29  8:06   ` [PATCH] SQUASHME: into NFSv4.1: purge deviceid cache - let ver < 4.1 compile Boaz Harrosh
2011-05-25 21:27 ` [PATCH v8 06/32] pnfs: CB_NOTIFY_DEVICEID Benny Halevy
2011-05-25 21:27 ` Benny Halevy [this message]
2011-05-25 21:27 ` [PATCH v8 08/32] SUNRPC: introduce xdr_init_decode_pages Benny Halevy
2011-05-25 21:27 ` [PATCH v8 09/32] pnfs: Use byte-range for layoutget Benny Halevy
2011-05-25 21:27 ` [PATCH v8 10/32] pnfs: align layoutget requests on page boundaries Benny Halevy
2011-05-25 21:27 ` [PATCH v8 11/32] pnfs: Use byte-range for cb_layoutrecall Benny Halevy
2011-05-25 21:27 ` [PATCH v8 12/32] pnfs: client stats Benny Halevy
2011-05-25 21:28 ` [PATCH v8 13/32] pnfs-obj: objlayoutdriver module skeleton Benny Halevy
2011-05-25 21:28 ` [PATCH v8 14/32] pnfs-obj: pnfs_osd XDR definitions Benny Halevy
2011-05-25 21:28 ` [PATCH v8 15/32] pnfs-obj: pnfs_osd XDR client implementation Benny Halevy
2011-05-25 21:28 ` [PATCH v8 16/32] pnfs-obj: decode layout, alloc/free lseg Benny Halevy
2011-05-26 19:05   ` [PATCH] SQUASHME V2: objio alloc/free lseg Bugs fixes Boaz Harrosh
2011-05-25 21:28 ` [PATCH v8 17/32] pnfs-obj: objio_osd device information retrieval and caching Benny Halevy
2011-05-26 14:04   ` Boaz Harrosh
2011-05-26 16:09     ` Benny Halevy
2011-05-26 19:07   ` [PATCH v9 16/18] " Boaz Harrosh
2011-05-26 19:09     ` Boaz Harrosh
2011-05-29 18:14     ` Benny Halevy
2011-05-25 21:28 ` [PATCH v8 18/32] pnfs: alloc and free layout_hdr layoutdriver methods Benny Halevy
2011-05-25 21:28 ` [PATCH v8 19/32] pnfs-obj: define per-inode private structure Benny Halevy
2011-05-25 21:28 ` [PATCH v8 20/32] pnfs: support for non-rpc layout drivers Benny Halevy
2011-05-25 21:29 ` [PATCH v8 21/32] pnfs-obj: osd raid engine read/write implementation Benny Halevy
2011-05-26 19:12   ` [PATCH resend3] SQUASHME: objio read/write patch: Bugs fixes Boaz Harrosh
2011-05-25 21:29 ` [PATCH v8 22/32] pnfs: layoutreturn Benny Halevy
2011-05-27 14:25   ` Boaz Harrosh
2011-05-25 21:29 ` [PATCH v8 23/32] pnfs: layoutret_on_setattr Benny Halevy
2011-05-25 21:29 ` [PATCH v8 24/32] pnfs: encode_layoutreturn Benny Halevy
2011-05-25 21:29 ` [PATCH v8 25/32] pnfs-obj: report errors and .encode_layoutreturn Implementation Benny Halevy
2011-05-26 19:14   ` Boaz Harrosh
2011-05-26 19:15   ` [PATCH v9 " Boaz Harrosh
2011-05-25 21:29 ` [PATCH v8 26/32] pnfs: encode_layoutcommit Benny Halevy
2011-05-25 21:29 ` [PATCH v8 27/32] pnfs-obj: objlayout_encode_layoutcommit implementation Benny Halevy
2011-05-25 21:29 ` [PATCH v8 28/32] NFSv4.1: unify pnfs_pageio_init functions Benny Halevy
2011-05-27 15:28   ` Boaz Harrosh
2011-05-27 15:37   ` [PATCH] SQUASHME: Fix BUG in: " Boaz Harrosh
2011-05-29  8:09     ` Boaz Harrosh
2011-05-29  8:10   ` [PATCH v2] " Boaz Harrosh
2011-05-25 21:30 ` [PATCH v8 29/32] NFSv4.1: change pg_test return type to bool Benny Halevy
2011-05-25 21:30 ` [PATCH v8 30/32] NFSv4.1: use pnfs_generic_pg_test directly by layout driver Benny Halevy
2011-05-25 21:30 ` [PATCH v8 31/32] NFSv4.1: define nfs_generic_pg_test Benny Halevy
2011-05-26 14:18   ` Boaz Harrosh
2011-05-26 18:20     ` Benny Halevy
2011-05-26 19:03       ` Boaz Harrosh
2011-05-26 19:17   ` Subject: [PATCH] SQUASHME: Move a check from nfs_pageio_do_add_request to nfs_generic_pg_test Boaz Harrosh
2011-05-26 19:58     ` Boaz Harrosh
2011-05-26 20:11       ` Trond Myklebust
2011-05-27  7:22         ` Boaz Harrosh
2011-05-25 21:30 ` [PATCH v8 32/32] pnfs-obj: pg_test check for max_io_size Benny Halevy
2011-05-26 14:57 ` [PATCHSET v8 0/32] pnfs for 2.6.40 Boaz Harrosh
2011-05-26 16:14   ` Benny Halevy
2011-05-29  8:56 ` Boaz Harrosh

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