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-rw-r--r--fs/9p/cache.c73
-rw-r--r--fs/afs/cache.c120
-rw-r--r--fs/afs/cell.c4
-rw-r--r--fs/afs/inode.c46
-rw-r--r--fs/afs/internal.h7
-rw-r--r--fs/afs/volume.c4
-rw-r--r--fs/cachefiles/interface.c38
-rw-r--r--fs/cachefiles/namei.c33
-rw-r--r--fs/cachefiles/xattr.c2
-rw-r--r--fs/ceph/cache.c93
-rw-r--r--fs/cifs/cache.c153
-rw-r--r--fs/cifs/fscache.c122
-rw-r--r--fs/cifs/fscache.h13
-rw-r--r--fs/fscache/cache.c2
-rw-r--r--fs/fscache/cookie.c88
-rw-r--r--fs/fscache/fsdef.c49
-rw-r--r--fs/fscache/internal.h21
-rw-r--r--fs/fscache/netfs.c17
-rw-r--r--fs/fscache/object-list.c28
-rw-r--r--fs/fscache/object.c22
-rw-r--r--fs/fscache/operation.c2
-rw-r--r--fs/nfs/fscache-index.c140
-rw-r--r--fs/nfs/fscache.c83
-rw-r--r--fs/nfs/fscache.h16
24 files changed, 490 insertions, 686 deletions
diff --git a/fs/9p/cache.c b/fs/9p/cache.c
index 64c58eb26159..9d0030af5672 100644
--- a/fs/9p/cache.c
+++ b/fs/9p/cache.c
@@ -55,41 +55,26 @@ int v9fs_random_cachetag(struct v9fs_session_info *v9ses)
 	return scnprintf(v9ses->cachetag, CACHETAG_LEN, "%lu", jiffies);
 }
 
-static uint16_t v9fs_cache_session_get_key(const void *cookie_netfs_data,
-					   void *buffer, uint16_t bufmax)
-{
-	struct v9fs_session_info *v9ses;
-	uint16_t klen = 0;
-
-	v9ses = (struct v9fs_session_info *)cookie_netfs_data;
-	p9_debug(P9_DEBUG_FSC, "session %p buf %p size %u\n",
-		 v9ses, buffer, bufmax);
-
-	if (v9ses->cachetag)
-		klen = strlen(v9ses->cachetag);
-
-	if (klen > bufmax)
-		return 0;
-
-	memcpy(buffer, v9ses->cachetag, klen);
-	p9_debug(P9_DEBUG_FSC, "cache session tag %s\n", v9ses->cachetag);
-	return klen;
-}
-
 const struct fscache_cookie_def v9fs_cache_session_index_def = {
 	.name		= "9P.session",
 	.type		= FSCACHE_COOKIE_TYPE_INDEX,
-	.get_key	= v9fs_cache_session_get_key,
 };
 
 void v9fs_cache_session_get_cookie(struct v9fs_session_info *v9ses)
 {
 	/* If no cache session tag was specified, we generate a random one. */
-	if (!v9ses->cachetag)
-		v9fs_random_cachetag(v9ses);
+	if (!v9ses->cachetag) {
+		if (v9fs_random_cachetag(v9ses) < 0) {
+			v9ses->fscache = NULL;
+			return;
+		}
+	}
 
 	v9ses->fscache = fscache_acquire_cookie(v9fs_cache_netfs.primary_index,
 						&v9fs_cache_session_index_def,
+						v9ses->cachetag,
+						strlen(v9ses->cachetag),
+						NULL, 0,
 						v9ses, true);
 	p9_debug(P9_DEBUG_FSC, "session %p get cookie %p\n",
 		 v9ses, v9ses->fscache);
@@ -99,21 +84,10 @@ void v9fs_cache_session_put_cookie(struct v9fs_session_info *v9ses)
 {
 	p9_debug(P9_DEBUG_FSC, "session %p put cookie %p\n",
 		 v9ses, v9ses->fscache);
-	fscache_relinquish_cookie(v9ses->fscache, 0);
+	fscache_relinquish_cookie(v9ses->fscache, NULL, false);
 	v9ses->fscache = NULL;
 }
 
-
-static uint16_t v9fs_cache_inode_get_key(const void *cookie_netfs_data,
-					 void *buffer, uint16_t bufmax)
-{
-	const struct v9fs_inode *v9inode = cookie_netfs_data;
-	memcpy(buffer, &v9inode->qid.path, sizeof(v9inode->qid.path));
-	p9_debug(P9_DEBUG_FSC, "inode %p get key %llu\n",
-		 &v9inode->vfs_inode, v9inode->qid.path);
-	return sizeof(v9inode->qid.path);
-}
-
 static void v9fs_cache_inode_get_attr(const void *cookie_netfs_data,
 				      uint64_t *size)
 {
@@ -124,16 +98,6 @@ static void v9fs_cache_inode_get_attr(const void *cookie_netfs_data,
 		 &v9inode->vfs_inode, *size);
 }
 
-static uint16_t v9fs_cache_inode_get_aux(const void *cookie_netfs_data,
-					 void *buffer, uint16_t buflen)
-{
-	const struct v9fs_inode *v9inode = cookie_netfs_data;
-	memcpy(buffer, &v9inode->qid.version, sizeof(v9inode->qid.version));
-	p9_debug(P9_DEBUG_FSC, "inode %p get aux %u\n",
-		 &v9inode->vfs_inode, v9inode->qid.version);
-	return sizeof(v9inode->qid.version);
-}
-
 static enum
 fscache_checkaux v9fs_cache_inode_check_aux(void *cookie_netfs_data,
 					    const void *buffer,
@@ -154,9 +118,7 @@ fscache_checkaux v9fs_cache_inode_check_aux(void *cookie_netfs_data,
 const struct fscache_cookie_def v9fs_cache_inode_index_def = {
 	.name		= "9p.inode",
 	.type		= FSCACHE_COOKIE_TYPE_DATAFILE,
-	.get_key	= v9fs_cache_inode_get_key,
 	.get_attr	= v9fs_cache_inode_get_attr,
-	.get_aux	= v9fs_cache_inode_get_aux,
 	.check_aux	= v9fs_cache_inode_check_aux,
 };
 
@@ -175,6 +137,10 @@ void v9fs_cache_inode_get_cookie(struct inode *inode)
 	v9ses = v9fs_inode2v9ses(inode);
 	v9inode->fscache = fscache_acquire_cookie(v9ses->fscache,
 						  &v9fs_cache_inode_index_def,
+						  &v9inode->qid.path,
+						  sizeof(v9inode->qid.path),
+						  &v9inode->qid.version,
+						  sizeof(v9inode->qid.version),
 						  v9inode, true);
 
 	p9_debug(P9_DEBUG_FSC, "inode %p get cookie %p\n",
@@ -190,7 +156,8 @@ void v9fs_cache_inode_put_cookie(struct inode *inode)
 	p9_debug(P9_DEBUG_FSC, "inode %p put cookie %p\n",
 		 inode, v9inode->fscache);
 
-	fscache_relinquish_cookie(v9inode->fscache, 0);
+	fscache_relinquish_cookie(v9inode->fscache, &v9inode->qid.version,
+				  false);
 	v9inode->fscache = NULL;
 }
 
@@ -203,7 +170,7 @@ void v9fs_cache_inode_flush_cookie(struct inode *inode)
 	p9_debug(P9_DEBUG_FSC, "inode %p flush cookie %p\n",
 		 inode, v9inode->fscache);
 
-	fscache_relinquish_cookie(v9inode->fscache, 1);
+	fscache_relinquish_cookie(v9inode->fscache, NULL, true);
 	v9inode->fscache = NULL;
 }
 
@@ -236,11 +203,15 @@ void v9fs_cache_inode_reset_cookie(struct inode *inode)
 	old = v9inode->fscache;
 
 	mutex_lock(&v9inode->fscache_lock);
-	fscache_relinquish_cookie(v9inode->fscache, 1);
+	fscache_relinquish_cookie(v9inode->fscache, NULL, true);
 
 	v9ses = v9fs_inode2v9ses(inode);
 	v9inode->fscache = fscache_acquire_cookie(v9ses->fscache,
 						  &v9fs_cache_inode_index_def,
+						  &v9inode->qid.path,
+						  sizeof(v9inode->qid.path),
+						  &v9inode->qid.version,
+						  sizeof(v9inode->qid.version),
 						  v9inode, true);
 	p9_debug(P9_DEBUG_FSC, "inode %p revalidating cookie old %p new %p\n",
 		 inode, old, v9inode->fscache);
diff --git a/fs/afs/cache.c b/fs/afs/cache.c
index cd857db9b112..a16f1e024cf3 100644
--- a/fs/afs/cache.c
+++ b/fs/afs/cache.c
@@ -12,17 +12,8 @@
 #include <linux/sched.h>
 #include "internal.h"
 
-static uint16_t afs_cell_cache_get_key(const void *cookie_netfs_data,
-				       void *buffer, uint16_t buflen);
-static uint16_t afs_volume_cache_get_key(const void *cookie_netfs_data,
-					 void *buffer, uint16_t buflen);
-
-static uint16_t afs_vnode_cache_get_key(const void *cookie_netfs_data,
-					void *buffer, uint16_t buflen);
 static void afs_vnode_cache_get_attr(const void *cookie_netfs_data,
 				     uint64_t *size);
-static uint16_t afs_vnode_cache_get_aux(const void *cookie_netfs_data,
-					void *buffer, uint16_t buflen);
 static enum fscache_checkaux afs_vnode_cache_check_aux(void *cookie_netfs_data,
 						       const void *buffer,
 						       uint16_t buflen);
@@ -35,98 +26,21 @@ struct fscache_netfs afs_cache_netfs = {
 struct fscache_cookie_def afs_cell_cache_index_def = {
 	.name		= "AFS.cell",
 	.type		= FSCACHE_COOKIE_TYPE_INDEX,
-	.get_key	= afs_cell_cache_get_key,
 };
 
 struct fscache_cookie_def afs_volume_cache_index_def = {
 	.name		= "AFS.volume",
 	.type		= FSCACHE_COOKIE_TYPE_INDEX,
-	.get_key	= afs_volume_cache_get_key,
 };
 
 struct fscache_cookie_def afs_vnode_cache_index_def = {
-	.name			= "AFS.vnode",
-	.type			= FSCACHE_COOKIE_TYPE_DATAFILE,
-	.get_key		= afs_vnode_cache_get_key,
-	.get_attr		= afs_vnode_cache_get_attr,
-	.get_aux		= afs_vnode_cache_get_aux,
-	.check_aux		= afs_vnode_cache_check_aux,
+	.name		= "AFS.vnode",
+	.type		= FSCACHE_COOKIE_TYPE_DATAFILE,
+	.get_attr	= afs_vnode_cache_get_attr,
+	.check_aux	= afs_vnode_cache_check_aux,
 };
 
 /*
- * set the key for the index entry
- */
-static uint16_t afs_cell_cache_get_key(const void *cookie_netfs_data,
-				       void *buffer, uint16_t bufmax)
-{
-	const struct afs_cell *cell = cookie_netfs_data;
-	uint16_t klen;
-
-	_enter("%p,%p,%u", cell, buffer, bufmax);
-
-	klen = strlen(cell->name);
-	if (klen > bufmax)
-		return 0;
-
-	memcpy(buffer, cell->name, klen);
-	return klen;
-}
-
-/*****************************************************************************/
-/*
- * set the key for the volume index entry
- */
-static uint16_t afs_volume_cache_get_key(const void *cookie_netfs_data,
-					 void *buffer, uint16_t bufmax)
-{
-	const struct afs_volume *volume = cookie_netfs_data;
-	struct {
-		u64 volid;
-	} __packed key;
-
-	_enter("{%u},%p,%u", volume->type, buffer, bufmax);
-
-	if (bufmax < sizeof(key))
-		return 0;
-
-	key.volid = volume->vid;
-	memcpy(buffer, &key, sizeof(key));
-	return sizeof(key);
-}
-
-/*****************************************************************************/
-/*
- * set the key for the index entry
- */
-static uint16_t afs_vnode_cache_get_key(const void *cookie_netfs_data,
-					void *buffer, uint16_t bufmax)
-{
-	const struct afs_vnode *vnode = cookie_netfs_data;
-	struct {
-		u32 vnode_id;
-		u32 unique;
-		u32 vnode_id_ext[2];	/* Allow for a 96-bit key */
-	} __packed key;
-
-	_enter("{%x,%x,%llx},%p,%u",
-	       vnode->fid.vnode, vnode->fid.unique, vnode->status.data_version,
-	       buffer, bufmax);
-
-	/* Allow for a 96-bit key */
-	memset(&key, 0, sizeof(key));
-	key.vnode_id		= vnode->fid.vnode;
-	key.unique		= vnode->fid.unique;
-	key.vnode_id_ext[0]	= 0;
-	key.vnode_id_ext[1]	= 0;
-
-	if (sizeof(key) > bufmax)
-		return 0;
-
-	memcpy(buffer, &key, sizeof(key));
-	return sizeof(key);
-}
-
-/*
  * provide updated file attributes
  */
 static void afs_vnode_cache_get_attr(const void *cookie_netfs_data,
@@ -141,32 +55,6 @@ static void afs_vnode_cache_get_attr(const void *cookie_netfs_data,
 	*size = vnode->status.size;
 }
 
-struct afs_vnode_cache_aux {
-	u64 data_version;
-} __packed;
-
-/*
- * provide new auxiliary cache data
- */
-static uint16_t afs_vnode_cache_get_aux(const void *cookie_netfs_data,
-					void *buffer, uint16_t bufmax)
-{
-	const struct afs_vnode *vnode = cookie_netfs_data;
-	struct afs_vnode_cache_aux aux;
-
-	_enter("{%x,%x,%Lx},%p,%u",
-	       vnode->fid.vnode, vnode->fid.unique, vnode->status.data_version,
-	       buffer, bufmax);
-
-	aux.data_version = vnode->status.data_version;
-
-	if (bufmax < sizeof(aux))
-		return 0;
-
-	memcpy(buffer, &aux, sizeof(aux));
-	return sizeof(aux);
-}
-
 /*
  * check that the auxiliary data indicates that the entry is still valid
  */
diff --git a/fs/afs/cell.c b/fs/afs/cell.c
index 3d2c5e0e854e..0747460221cb 100644
--- a/fs/afs/cell.c
+++ b/fs/afs/cell.c
@@ -522,6 +522,8 @@ static int afs_activate_cell(struct afs_net *net, struct afs_cell *cell)
 #ifdef CONFIG_AFS_FSCACHE
 	cell->cache = fscache_acquire_cookie(afs_cache_netfs.primary_index,
 					     &afs_cell_cache_index_def,
+					     cell->name, strlen(cell->name),
+					     NULL, 0,
 					     cell, true);
 #endif
 	ret = afs_proc_cell_setup(net, cell);
@@ -547,7 +549,7 @@ static void afs_deactivate_cell(struct afs_net *net, struct afs_cell *cell)
 	spin_unlock(&net->proc_cells_lock);
 
 #ifdef CONFIG_AFS_FSCACHE
-	fscache_relinquish_cookie(cell->cache, 0);
+	fscache_relinquish_cookie(cell->cache, NULL, false);
 	cell->cache = NULL;
 #endif
 
diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index c942c79fc5f0..e499713efd2e 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -243,6 +243,33 @@ struct inode *afs_iget_pseudo_dir(struct super_block *sb, bool root)
 }
 
 /*
+ * Get a cache cookie for an inode.
+ */
+static void afs_get_inode_cache(struct afs_vnode *vnode)
+{
+#ifdef CONFIG_AFS_FSCACHE
+	struct {
+		u32 vnode_id;
+		u32 unique;
+		u32 vnode_id_ext[2];	/* Allow for a 96-bit key */
+	} __packed key;
+	struct afs_vnode_cache_aux aux;
+
+	key.vnode_id		= vnode->fid.vnode;
+	key.unique		= vnode->fid.unique;
+	key.vnode_id_ext[0]	= 0;
+	key.vnode_id_ext[1]	= 0;
+	aux.data_version	= vnode->status.data_version;
+
+	vnode->cache = fscache_acquire_cookie(vnode->volume->cache,
+					      &afs_vnode_cache_index_def,
+					      &key, sizeof(key),
+					      &aux, sizeof(aux),
+					      vnode, true);
+#endif
+}
+
+/*
  * inode retrieval
  */
 struct inode *afs_iget(struct super_block *sb, struct key *key,
@@ -307,11 +334,7 @@ struct inode *afs_iget(struct super_block *sb, struct key *key,
 	/* set up caching before mapping the status, as map-status reads the
 	 * first page of symlinks to see if they're really mountpoints */
 	inode->i_size = vnode->status.size;
-#ifdef CONFIG_AFS_FSCACHE
-	vnode->cache = fscache_acquire_cookie(vnode->volume->cache,
-					      &afs_vnode_cache_index_def,
-					      vnode, true);
-#endif
+	afs_get_inode_cache(vnode);
 
 	ret = afs_inode_map_status(vnode, key);
 	if (ret < 0)
@@ -327,7 +350,7 @@ struct inode *afs_iget(struct super_block *sb, struct key *key,
 	/* failure */
 bad_inode:
 #ifdef CONFIG_AFS_FSCACHE
-	fscache_relinquish_cookie(vnode->cache, ret == -ENOENT);
+	fscache_relinquish_cookie(vnode->cache, NULL, ret == -ENOENT);
 	vnode->cache = NULL;
 #endif
 	iget_failed(inode);
@@ -511,9 +534,14 @@ void afs_evict_inode(struct inode *inode)
 	}
 
 #ifdef CONFIG_AFS_FSCACHE
-	fscache_relinquish_cookie(vnode->cache,
-				  test_bit(AFS_VNODE_DELETED, &vnode->flags));
-	vnode->cache = NULL;
+	{
+		struct afs_vnode_cache_aux aux;
+
+		aux.data_version = vnode->status.data_version;
+		fscache_relinquish_cookie(vnode->cache, &aux,
+					  test_bit(AFS_VNODE_DELETED, &vnode->flags));
+		vnode->cache = NULL;
+	}
 #endif
 
 	afs_put_permits(vnode->permit_cache);
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 72217170b155..a6a1d75eee41 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -559,6 +559,13 @@ struct afs_fs_cursor {
 #define AFS_FS_CURSOR_NO_VSLEEP	0x0020		/* Set to prevent sleep on VBUSY, VOFFLINE, ... */
 };
 
+/*
+ * Cache auxiliary data.
+ */
+struct afs_vnode_cache_aux {
+	u64			data_version;
+} __packed;
+
 #include <trace/events/afs.h>
 
 /*****************************************************************************/
diff --git a/fs/afs/volume.c b/fs/afs/volume.c
index b517a588781f..345cb2d675d2 100644
--- a/fs/afs/volume.c
+++ b/fs/afs/volume.c
@@ -225,6 +225,8 @@ void afs_activate_volume(struct afs_volume *volume)
 #ifdef CONFIG_AFS_FSCACHE
 	volume->cache = fscache_acquire_cookie(volume->cell->cache,
 					       &afs_volume_cache_index_def,
+					       &volume->vid, sizeof(volume->vid),
+					       NULL, 0,
 					       volume, true);
 #endif
 
@@ -245,7 +247,7 @@ void afs_deactivate_volume(struct afs_volume *volume)
 	write_unlock(&volume->cell->proc_lock);
 
 #ifdef CONFIG_AFS_FSCACHE
-	fscache_relinquish_cookie(volume->cache,
+	fscache_relinquish_cookie(volume->cache, NULL,
 				  test_bit(AFS_VOLUME_DELETED, &volume->flags));
 	volume->cache = NULL;
 #endif
diff --git a/fs/cachefiles/interface.c b/fs/cachefiles/interface.c
index 405ebc3932c2..3264dcfdc92a 100644
--- a/fs/cachefiles/interface.c
+++ b/fs/cachefiles/interface.c
@@ -32,7 +32,7 @@ static struct fscache_object *cachefiles_alloc_object(
 	struct cachefiles_cache *cache;
 	struct cachefiles_xattr *auxdata;
 	unsigned keylen, auxlen;
-	void *buffer;
+	void *buffer, *p;
 	char *key;
 
 	cache = container_of(_cache, struct cachefiles_cache, cache);
@@ -65,8 +65,12 @@ static struct fscache_object *cachefiles_alloc_object(
 	if (!buffer)
 		goto nomem_buffer;
 
-	keylen = cookie->def->get_key(cookie->netfs_data, buffer + 2, 512);
-	ASSERTCMP(keylen, <, 512);
+	keylen = cookie->key_len;
+	if (keylen <= sizeof(cookie->inline_key))
+		p = cookie->inline_key;
+	else
+		p = cookie->key;
+	memcpy(buffer + 2, p, keylen);
 
 	*(uint16_t *)buffer = keylen;
 	((char *)buffer)[keylen + 2] = 0;
@@ -80,15 +84,17 @@ static struct fscache_object *cachefiles_alloc_object(
 
 	/* get hold of the auxiliary data and prepend the object type */
 	auxdata = buffer;
-	auxlen = 0;
-	if (cookie->def->get_aux) {
-		auxlen = cookie->def->get_aux(cookie->netfs_data,
-					      auxdata->data, 511);
-		ASSERTCMP(auxlen, <, 511);
+	auxlen = cookie->aux_len;
+	if (auxlen) {
+		if (auxlen <= sizeof(cookie->inline_aux))
+			p = cookie->inline_aux;
+		else
+			p = cookie->aux;
+		memcpy(auxdata->data, p, auxlen);
 	}
 
 	auxdata->len = auxlen + 1;
-	auxdata->type = cookie->def->type;
+	auxdata->type = cookie->type;
 
 	lookup_data->auxdata = auxdata;
 	lookup_data->key = key;
@@ -206,6 +212,7 @@ static void cachefiles_update_object(struct fscache_object *_object)
 	struct cachefiles_cache *cache;
 	struct fscache_cookie *cookie;
 	const struct cred *saved_cred;
+	const void *aux;
 	unsigned auxlen;
 
 	_enter("{OBJ%x}", _object->debug_id);
@@ -220,26 +227,29 @@ static void cachefiles_update_object(struct fscache_object *_object)
 	}
 
 	cookie = object->fscache.cookie;
+	auxlen = cookie->aux_len;
 
-	if (!cookie->def->get_aux) {
+	if (!auxlen) {
 		fscache_unuse_cookie(_object);
 		_leave(" [no aux]");
 		return;
 	}
 
-	auxdata = kmalloc(2 + 512 + 3, cachefiles_gfp);
+	auxdata = kmalloc(2 + auxlen + 3, cachefiles_gfp);
 	if (!auxdata) {
 		fscache_unuse_cookie(_object);
 		_leave(" [nomem]");
 		return;
 	}
 
-	auxlen = cookie->def->get_aux(cookie->netfs_data, auxdata->data, 511);
+	aux = (auxlen <= sizeof(cookie->inline_aux)) ?
+		cookie->inline_aux : cookie->aux;
+
+	memcpy(auxdata->data, aux, auxlen);
 	fscache_unuse_cookie(_object);
-	ASSERTCMP(auxlen, <, 511);
 
 	auxdata->len = auxlen + 1;
-	auxdata->type = cookie->def->type;
+	auxdata->type = cookie->type;
 
 	cachefiles_begin_secure(cache, &saved_cred);
 	cachefiles_update_object_xattr(object, auxdata);
diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c
index 5fc214256316..0daa1e3fe0df 100644
--- a/fs/cachefiles/namei.c
+++ b/fs/cachefiles/namei.c
@@ -30,11 +30,11 @@
  */
 static noinline
 void __cachefiles_printk_object(struct cachefiles_object *object,
-				const char *prefix,
-				u8 *keybuf)
+				const char *prefix)
 {
 	struct fscache_cookie *cookie;
-	unsigned keylen, loop;
+	const u8 *k;
+	unsigned loop;
 
 	pr_err("%sobject: OBJ%x\n", prefix, object->fscache.debug_id);
 	pr_err("%sobjstate=%s fl=%lx wbusy=%x ev=%lx[%lx]\n",
@@ -56,23 +56,16 @@ void __cachefiles_printk_object(struct cachefiles_object *object,
 		       object->fscache.cookie->parent,
 		       object->fscache.cookie->netfs_data,
 		       object->fscache.cookie->flags);
-		if (keybuf && cookie->def)
-			keylen = cookie->def->get_key(cookie->netfs_data, keybuf,
-						      CACHEFILES_KEYBUF_SIZE);
-		else
-			keylen = 0;
+		pr_err("%skey=[%u] '", prefix, cookie->key_len);
+		k = (cookie->key_len <= sizeof(cookie->inline_key)) ?
+			cookie->inline_key : cookie->key;
+		for (loop = 0; loop < cookie->key_len; loop++)
+			pr_cont("%02x", k[loop]);
+		pr_cont("'\n");
 	} else {
 		pr_err("%scookie=NULL\n", prefix);
-		keylen = 0;
 	}
 	spin_unlock(&object->fscache.lock);
-
-	if (keylen) {
-		pr_err("%skey=[%u] '", prefix, keylen);
-		for (loop = 0; loop < keylen; loop++)
-			pr_cont("%02x", keybuf[loop]);
-		pr_cont("'\n");
-	}
 }
 
 /*
@@ -81,14 +74,10 @@ void __cachefiles_printk_object(struct cachefiles_object *object,
 static noinline void cachefiles_printk_object(struct cachefiles_object *object,
 					      struct cachefiles_object *xobject)
 {
-	u8 *keybuf;
-
-	keybuf = kmalloc(CACHEFILES_KEYBUF_SIZE, GFP_NOIO);
 	if (object)
-		__cachefiles_printk_object(object, "", keybuf);
+		__cachefiles_printk_object(object, "");
 	if (xobject)
-		__cachefiles_printk_object(xobject, "x", keybuf);
-	kfree(keybuf);
+		__cachefiles_printk_object(xobject, "x");
 }
 
 /*
diff --git a/fs/cachefiles/xattr.c b/fs/cachefiles/xattr.c
index d31c1a72d8a5..d84423c264af 100644
--- a/fs/cachefiles/xattr.c
+++ b/fs/cachefiles/xattr.c
@@ -113,6 +113,7 @@ int cachefiles_set_object_xattr(struct cachefiles_object *object,
 	/* attempt to install the cache metadata directly */
 	_debug("SET #%u", auxdata->len);
 
+	clear_bit(FSCACHE_COOKIE_AUX_UPDATED, &object->fscache.cookie->flags);
 	ret = vfs_setxattr(dentry, cachefiles_xattr_cache,
 			   &auxdata->type, auxdata->len,
 			   XATTR_CREATE);
@@ -141,6 +142,7 @@ int cachefiles_update_object_xattr(struct cachefiles_object *object,
 	/* attempt to install the cache metadata directly */
 	_debug("SET #%u", auxdata->len);
 
+	clear_bit(FSCACHE_COOKIE_AUX_UPDATED, &object->fscache.cookie->flags);
 	ret = vfs_setxattr(dentry, cachefiles_xattr_cache,
 			   &auxdata->type, auxdata->len,
 			   XATTR_REPLACE);
diff --git a/fs/ceph/cache.c b/fs/ceph/cache.c
index a3ab265d3215..fee869061f05 100644
--- a/fs/ceph/cache.c
+++ b/fs/ceph/cache.c
@@ -41,34 +41,15 @@ static LIST_HEAD(ceph_fscache_list);
 struct ceph_fscache_entry {
 	struct list_head list;
 	struct fscache_cookie *fscache;
-	struct ceph_fsid fsid;
 	size_t uniq_len;
+	/* The following members must be last */
+	struct ceph_fsid fsid;
 	char uniquifier[0];
 };
 
-static uint16_t ceph_fscache_session_get_key(const void *cookie_netfs_data,
-					     void *buffer, uint16_t maxbuf)
-{
-	const struct ceph_fs_client* fsc = cookie_netfs_data;
-	const char *fscache_uniq = fsc->mount_options->fscache_uniq;
-	uint16_t fsid_len, uniq_len;
-
-	fsid_len = sizeof(fsc->client->fsid);
-	uniq_len = fscache_uniq ? strlen(fscache_uniq) : 0;
-	if (fsid_len + uniq_len > maxbuf)
-		return 0;
-
-	memcpy(buffer, &fsc->client->fsid, fsid_len);
-	if (uniq_len)
-		memcpy(buffer + fsid_len, fscache_uniq, uniq_len);
-
-	return fsid_len + uniq_len;
-}
-
 static const struct fscache_cookie_def ceph_fscache_fsid_object_def = {
 	.name		= "CEPH.fsid",
 	.type		= FSCACHE_COOKIE_TYPE_INDEX,
-	.get_key	= ceph_fscache_session_get_key,
 };
 
 int ceph_fscache_register(void)
@@ -110,16 +91,19 @@ int ceph_fscache_register_fs(struct ceph_fs_client* fsc)
 		goto out_unlock;
 	}
 
+	memcpy(&ent->fsid, fsid, sizeof(*fsid));
+	if (uniq_len > 0) {
+		memcpy(&ent->uniquifier, fscache_uniq, uniq_len);
+		ent->uniq_len = uniq_len;
+	}
+
 	fsc->fscache = fscache_acquire_cookie(ceph_cache_netfs.primary_index,
 					      &ceph_fscache_fsid_object_def,
+					      &ent->fsid, sizeof(ent->fsid) + uniq_len,
+					      NULL, 0,
 					      fsc, true);
 
 	if (fsc->fscache) {
-		memcpy(&ent->fsid, fsid, sizeof(*fsid));
-		if (uniq_len > 0) {
-			memcpy(&ent->uniquifier, fscache_uniq, uniq_len);
-			ent->uniq_len = uniq_len;
-		}
 		ent->fscache = fsc->fscache;
 		list_add_tail(&ent->list, &ceph_fscache_list);
 	} else {
@@ -133,38 +117,6 @@ out_unlock:
 	return err;
 }
 
-static uint16_t ceph_fscache_inode_get_key(const void *cookie_netfs_data,
-					   void *buffer, uint16_t maxbuf)
-{
-	const struct ceph_inode_info* ci = cookie_netfs_data;
-	uint16_t klen;
-
-	/* use ceph virtual inode (id + snapshot) */
-	klen = sizeof(ci->i_vino);
-	if (klen > maxbuf)
-		return 0;
-
-	memcpy(buffer, &ci->i_vino, klen);
-	return klen;
-}
-
-static uint16_t ceph_fscache_inode_get_aux(const void *cookie_netfs_data,
-					   void *buffer, uint16_t bufmax)
-{
-	struct ceph_aux_inode aux;
-	const struct ceph_inode_info* ci = cookie_netfs_data;
-	const struct inode* inode = &ci->vfs_inode;
-
-	memset(&aux, 0, sizeof(aux));
-	aux.version = ci->i_version;
-	aux.mtime = inode->i_mtime;
-	aux.size = i_size_read(inode);
-
-	memcpy(buffer, &aux, sizeof(aux));
-
-	return sizeof(aux);
-}
-
 static void ceph_fscache_inode_get_attr(const void *cookie_netfs_data,
 					uint64_t *size)
 {
@@ -197,9 +149,7 @@ static enum fscache_checkaux ceph_fscache_inode_check_aux(
 static const struct fscache_cookie_def ceph_fscache_inode_object_def = {
 	.name		= "CEPH.inode",
 	.type		= FSCACHE_COOKIE_TYPE_DATAFILE,
-	.get_key	= ceph_fscache_inode_get_key,
 	.get_attr	= ceph_fscache_inode_get_attr,
-	.get_aux	= ceph_fscache_inode_get_aux,
 	.check_aux	= ceph_fscache_inode_check_aux,
 };
 
@@ -207,6 +157,7 @@ void ceph_fscache_register_inode_cookie(struct inode *inode)
 {
 	struct ceph_inode_info *ci = ceph_inode(inode);
 	struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
+	struct ceph_aux_inode aux;
 
 	/* No caching for filesystem */
 	if (!fsc->fscache)
@@ -218,9 +169,15 @@ void ceph_fscache_register_inode_cookie(struct inode *inode)
 
 	inode_lock_nested(inode, I_MUTEX_CHILD);
 	if (!ci->fscache) {
+		memset(&aux, 0, sizeof(aux));
+		aux.version = ci->i_version;
+		aux.mtime = inode->i_mtime;
+		aux.size = i_size_read(inode);
 		ci->fscache = fscache_acquire_cookie(fsc->fscache,
-					&ceph_fscache_inode_object_def,
-					ci, false);
+						     &ceph_fscache_inode_object_def,
+						     &ci->i_vino, sizeof(ci->i_vino),
+						     &aux, sizeof(aux),
+						     ci, false);
 	}
 	inode_unlock(inode);
 }
@@ -235,7 +192,7 @@ void ceph_fscache_unregister_inode_cookie(struct ceph_inode_info* ci)
 	ci->fscache = NULL;
 
 	fscache_uncache_all_inode_pages(cookie, &ci->vfs_inode);
-	fscache_relinquish_cookie(cookie, 0);
+	fscache_relinquish_cookie(cookie, &ci->i_vino, false);
 }
 
 static bool ceph_fscache_can_enable(void *data)
@@ -254,11 +211,11 @@ void ceph_fscache_file_set_cookie(struct inode *inode, struct file *filp)
 	if (inode_is_open_for_write(inode)) {
 		dout("fscache_file_set_cookie %p %p disabling cache\n",
 		     inode, filp);
-		fscache_disable_cookie(ci->fscache, false);
+		fscache_disable_cookie(ci->fscache, &ci->i_vino, false);
 		fscache_uncache_all_inode_pages(ci->fscache, inode);
 	} else {
-		fscache_enable_cookie(ci->fscache, ceph_fscache_can_enable,
-				inode);
+		fscache_enable_cookie(ci->fscache, &ci->i_vino,
+				      ceph_fscache_can_enable, inode);
 		if (fscache_cookie_enabled(ci->fscache)) {
 			dout("fscache_file_set_cookie %p %p enabling cache\n",
 			     inode, filp);
@@ -385,7 +342,7 @@ void ceph_fscache_unregister_fs(struct ceph_fs_client* fsc)
 		WARN_ON_ONCE(!found);
 		mutex_unlock(&ceph_fscache_lock);
 
-		__fscache_relinquish_cookie(fsc->fscache, 0);
+		__fscache_relinquish_cookie(fsc->fscache, NULL, false);
 	}
 	fsc->fscache = NULL;
 }
@@ -402,7 +359,7 @@ void ceph_fscache_revalidate_cookie(struct ceph_inode_info *ci)
 	 * truncate while the caller holds CEPH_CAP_FILE_RD */
 	mutex_lock(&ci->i_truncate_mutex);
 	if (!cache_valid(ci)) {
-		if (fscache_check_consistency(ci->fscache))
+		if (fscache_check_consistency(ci->fscache, &ci->i_vino))
 			fscache_invalidate(ci->fscache);
 		spin_lock(&ci->i_ceph_lock);
 		ci->i_fscache_gen = ci->i_rdcache_gen;
diff --git a/fs/cifs/cache.c b/fs/cifs/cache.c
index 2c14020e5e1d..b4fa270ef532 100644
--- a/fs/cifs/cache.c
+++ b/fs/cifs/cache.c
@@ -46,67 +46,11 @@ void cifs_fscache_unregister(void)
 }
 
 /*
- * Key layout of CIFS server cache index object
- */
-struct cifs_server_key {
-	uint16_t	family;		/* address family */
-	__be16		port;		/* IP port */
-	union {
-		struct in_addr	ipv4_addr;
-		struct in6_addr	ipv6_addr;
-	} addr[0];
-};
-
-/*
- * Server object keyed by {IPaddress,port,family} tuple
- */
-static uint16_t cifs_server_get_key(const void *cookie_netfs_data,
-				   void *buffer, uint16_t maxbuf)
-{
-	const struct TCP_Server_Info *server = cookie_netfs_data;
-	const struct sockaddr *sa = (struct sockaddr *) &server->dstaddr;
-	const struct sockaddr_in *addr = (struct sockaddr_in *) sa;
-	const struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) sa;
-	struct cifs_server_key *key = buffer;
-	uint16_t key_len = sizeof(struct cifs_server_key);
-
-	memset(key, 0, key_len);
-
-	/*
-	 * Should not be a problem as sin_family/sin6_family overlays
-	 * sa_family field
-	 */
-	switch (sa->sa_family) {
-	case AF_INET:
-		key->family = sa->sa_family;
-		key->port = addr->sin_port;
-		key->addr[0].ipv4_addr = addr->sin_addr;
-		key_len += sizeof(key->addr[0].ipv4_addr);
-		break;
-
-	case AF_INET6:
-		key->family = sa->sa_family;
-		key->port = addr6->sin6_port;
-		key->addr[0].ipv6_addr = addr6->sin6_addr;
-		key_len += sizeof(key->addr[0].ipv6_addr);
-		break;
-
-	default:
-		cifs_dbg(VFS, "Unknown network family '%d'\n", sa->sa_family);
-		key_len = 0;
-		break;
-	}
-
-	return key_len;
-}
-
-/*
  * Server object for FS-Cache
  */
 const struct fscache_cookie_def cifs_fscache_server_index_def = {
 	.name = "CIFS.server",
 	.type = FSCACHE_COOKIE_TYPE_INDEX,
-	.get_key = cifs_server_get_key,
 };
 
 /*
@@ -116,7 +60,7 @@ struct cifs_fscache_super_auxdata {
 	u64	resource_id;		/* unique server resource id */
 };
 
-static char *extract_sharename(const char *treename)
+char *extract_sharename(const char *treename)
 {
 	const char *src;
 	char *delim, *dst;
@@ -140,52 +84,6 @@ static char *extract_sharename(const char *treename)
 	return dst;
 }
 
-/*
- * Superblock object currently keyed by share name
- */
-static uint16_t cifs_super_get_key(const void *cookie_netfs_data, void *buffer,
-				   uint16_t maxbuf)
-{
-	const struct cifs_tcon *tcon = cookie_netfs_data;
-	char *sharename;
-	uint16_t len;
-
-	sharename = extract_sharename(tcon->treeName);
-	if (IS_ERR(sharename)) {
-		cifs_dbg(FYI, "%s: couldn't extract sharename\n", __func__);
-		sharename = NULL;
-		return 0;
-	}
-
-	len = strlen(sharename);
-	if (len > maxbuf)
-		return 0;
-
-	memcpy(buffer, sharename, len);
-
-	kfree(sharename);
-
-	return len;
-}
-
-static uint16_t
-cifs_fscache_super_get_aux(const void *cookie_netfs_data, void *buffer,
-			   uint16_t maxbuf)
-{
-	struct cifs_fscache_super_auxdata auxdata;
-	const struct cifs_tcon *tcon = cookie_netfs_data;
-
-	memset(&auxdata, 0, sizeof(auxdata));
-	auxdata.resource_id = tcon->resource_id;
-
-	if (maxbuf > sizeof(auxdata))
-		maxbuf = sizeof(auxdata);
-
-	memcpy(buffer, &auxdata, maxbuf);
-
-	return maxbuf;
-}
-
 static enum
 fscache_checkaux cifs_fscache_super_check_aux(void *cookie_netfs_data,
 					      const void *data,
@@ -212,36 +110,9 @@ fscache_checkaux cifs_fscache_super_check_aux(void *cookie_netfs_data,
 const struct fscache_cookie_def cifs_fscache_super_index_def = {
 	.name = "CIFS.super",
 	.type = FSCACHE_COOKIE_TYPE_INDEX,
-	.get_key = cifs_super_get_key,
-	.get_aux = cifs_fscache_super_get_aux,
 	.check_aux = cifs_fscache_super_check_aux,
 };
 
-/*
- * Auxiliary data attached to CIFS inode within the cache
- */
-struct cifs_fscache_inode_auxdata {
-	struct timespec	last_write_time;
-	struct timespec	last_change_time;
-	u64		eof;
-};
-
-static uint16_t cifs_fscache_inode_get_key(const void *cookie_netfs_data,
-					   void *buffer, uint16_t maxbuf)
-{
-	const struct cifsInodeInfo *cifsi = cookie_netfs_data;
-	uint16_t keylen;
-
-	/* use the UniqueId as the key */
-	keylen = sizeof(cifsi->uniqueid);
-	if (keylen > maxbuf)
-		keylen = 0;
-	else
-		memcpy(buffer, &cifsi->uniqueid, keylen);
-
-	return keylen;
-}
-
 static void
 cifs_fscache_inode_get_attr(const void *cookie_netfs_data, uint64_t *size)
 {
@@ -250,26 +121,6 @@ cifs_fscache_inode_get_attr(const void *cookie_netfs_data, uint64_t *size)
 	*size = cifsi->vfs_inode.i_size;
 }
 
-static uint16_t
-cifs_fscache_inode_get_aux(const void *cookie_netfs_data, void *buffer,
-			   uint16_t maxbuf)
-{
-	struct cifs_fscache_inode_auxdata auxdata;
-	const struct cifsInodeInfo *cifsi = cookie_netfs_data;
-
-	memset(&auxdata, 0, sizeof(auxdata));
-	auxdata.eof = cifsi->server_eof;
-	auxdata.last_write_time = cifsi->vfs_inode.i_mtime;
-	auxdata.last_change_time = cifsi->vfs_inode.i_ctime;
-
-	if (maxbuf > sizeof(auxdata))
-		maxbuf = sizeof(auxdata);
-
-	memcpy(buffer, &auxdata, maxbuf);
-
-	return maxbuf;
-}
-
 static enum
 fscache_checkaux cifs_fscache_inode_check_aux(void *cookie_netfs_data,
 					      const void *data,
@@ -295,8 +146,6 @@ fscache_checkaux cifs_fscache_inode_check_aux(void *cookie_netfs_data,
 const struct fscache_cookie_def cifs_fscache_inode_object_def = {
 	.name		= "CIFS.uniqueid",
 	.type		= FSCACHE_COOKIE_TYPE_DATAFILE,
-	.get_key	= cifs_fscache_inode_get_key,
 	.get_attr	= cifs_fscache_inode_get_attr,
-	.get_aux	= cifs_fscache_inode_get_aux,
 	.check_aux	= cifs_fscache_inode_check_aux,
 };
diff --git a/fs/cifs/fscache.c b/fs/cifs/fscache.c
index 8d4b7bc8ae91..b89b59b01759 100644
--- a/fs/cifs/fscache.c
+++ b/fs/cifs/fscache.c
@@ -23,11 +23,63 @@
 #include "cifs_debug.h"
 #include "cifs_fs_sb.h"
 
+/*
+ * Key layout of CIFS server cache index object
+ */
+struct cifs_server_key {
+	struct {
+		uint16_t	family;		/* address family */
+		__be16		port;		/* IP port */
+	} hdr;
+	union {
+		struct in_addr	ipv4_addr;
+		struct in6_addr	ipv6_addr;
+	};
+} __packed;
+
+/*
+ * Get a cookie for a server object keyed by {IPaddress,port,family} tuple
+ */
 void cifs_fscache_get_client_cookie(struct TCP_Server_Info *server)
 {
+	const struct sockaddr *sa = (struct sockaddr *) &server->dstaddr;
+	const struct sockaddr_in *addr = (struct sockaddr_in *) sa;
+	const struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) sa;
+	struct cifs_server_key key;
+	uint16_t key_len = sizeof(key.hdr);
+
+	memset(&key, 0, sizeof(key));
+
+	/*
+	 * Should not be a problem as sin_family/sin6_family overlays
+	 * sa_family field
+	 */
+	key.hdr.family = sa->sa_family;
+	switch (sa->sa_family) {
+	case AF_INET:
+		key.hdr.port = addr->sin_port;
+		key.ipv4_addr = addr->sin_addr;
+		key_len += sizeof(key.ipv4_addr);
+		break;
+
+	case AF_INET6:
+		key.hdr.port = addr6->sin6_port;
+		key.ipv6_addr = addr6->sin6_addr;
+		key_len += sizeof(key.ipv6_addr);
+		break;
+
+	default:
+		cifs_dbg(VFS, "Unknown network family '%d'\n", sa->sa_family);
+		server->fscache = NULL;
+		return;
+	}
+
 	server->fscache =
 		fscache_acquire_cookie(cifs_fscache_netfs.primary_index,
-				&cifs_fscache_server_index_def, server, true);
+				       &cifs_fscache_server_index_def,
+				       &key, key_len,
+				       NULL, 0,
+				       server, true);
 	cifs_dbg(FYI, "%s: (0x%p/0x%p)\n",
 		 __func__, server, server->fscache);
 }
@@ -36,17 +88,29 @@ void cifs_fscache_release_client_cookie(struct TCP_Server_Info *server)
 {
 	cifs_dbg(FYI, "%s: (0x%p/0x%p)\n",
 		 __func__, server, server->fscache);
-	fscache_relinquish_cookie(server->fscache, 0);
+	fscache_relinquish_cookie(server->fscache, NULL, false);
 	server->fscache = NULL;
 }
 
 void cifs_fscache_get_super_cookie(struct cifs_tcon *tcon)
 {
 	struct TCP_Server_Info *server = tcon->ses->server;
+	char *sharename;
+
+	sharename = extract_sharename(tcon->treeName);
+	if (IS_ERR(sharename)) {
+		cifs_dbg(FYI, "%s: couldn't extract sharename\n", __func__);
+		tcon->fscache = NULL;
+		return;
+	}
 
 	tcon->fscache =
 		fscache_acquire_cookie(server->fscache,
-				&cifs_fscache_super_index_def, tcon, true);
+				       &cifs_fscache_super_index_def,
+				       sharename, strlen(sharename),
+				       &tcon->resource_id, sizeof(tcon->resource_id),
+				       tcon, true);
+	kfree(sharename);
 	cifs_dbg(FYI, "%s: (0x%p/0x%p)\n",
 		 __func__, server->fscache, tcon->fscache);
 }
@@ -54,10 +118,28 @@ void cifs_fscache_get_super_cookie(struct cifs_tcon *tcon)
 void cifs_fscache_release_super_cookie(struct cifs_tcon *tcon)
 {
 	cifs_dbg(FYI, "%s: (0x%p)\n", __func__, tcon->fscache);
-	fscache_relinquish_cookie(tcon->fscache, 0);
+	fscache_relinquish_cookie(tcon->fscache, &tcon->resource_id, false);
 	tcon->fscache = NULL;
 }
 
+static void cifs_fscache_acquire_inode_cookie(struct cifsInodeInfo *cifsi,
+					      struct cifs_tcon *tcon)
+{
+	struct cifs_fscache_inode_auxdata auxdata;
+
+	memset(&auxdata, 0, sizeof(auxdata));
+	auxdata.eof = cifsi->server_eof;
+	auxdata.last_write_time = cifsi->vfs_inode.i_mtime;
+	auxdata.last_change_time = cifsi->vfs_inode.i_ctime;
+
+	cifsi->fscache =
+		fscache_acquire_cookie(tcon->fscache,
+				       &cifs_fscache_inode_object_def,
+				       &cifsi->uniqueid, sizeof(cifsi->uniqueid),
+				       &auxdata, sizeof(auxdata),
+				       cifsi, true);
+}
+
 static void cifs_fscache_enable_inode_cookie(struct inode *inode)
 {
 	struct cifsInodeInfo *cifsi = CIFS_I(inode);
@@ -67,21 +149,28 @@ static void cifs_fscache_enable_inode_cookie(struct inode *inode)
 	if (cifsi->fscache)
 		return;
 
-	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE) {
-		cifsi->fscache = fscache_acquire_cookie(tcon->fscache,
-				&cifs_fscache_inode_object_def, cifsi, true);
-		cifs_dbg(FYI, "%s: got FH cookie (0x%p/0x%p)\n",
-			 __func__, tcon->fscache, cifsi->fscache);
-	}
+	if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE))
+		return;
+
+	cifs_fscache_acquire_inode_cookie(cifsi, tcon);
+
+	cifs_dbg(FYI, "%s: got FH cookie (0x%p/0x%p)\n",
+		 __func__, tcon->fscache, cifsi->fscache);
 }
 
 void cifs_fscache_release_inode_cookie(struct inode *inode)
 {
+	struct cifs_fscache_inode_auxdata auxdata;
 	struct cifsInodeInfo *cifsi = CIFS_I(inode);
 
 	if (cifsi->fscache) {
+		memset(&auxdata, 0, sizeof(auxdata));
+		auxdata.eof = cifsi->server_eof;
+		auxdata.last_write_time = cifsi->vfs_inode.i_mtime;
+		auxdata.last_change_time = cifsi->vfs_inode.i_ctime;
+
 		cifs_dbg(FYI, "%s: (0x%p)\n", __func__, cifsi->fscache);
-		fscache_relinquish_cookie(cifsi->fscache, 0);
+		fscache_relinquish_cookie(cifsi->fscache, &auxdata, false);
 		cifsi->fscache = NULL;
 	}
 }
@@ -93,7 +182,7 @@ static void cifs_fscache_disable_inode_cookie(struct inode *inode)
 	if (cifsi->fscache) {
 		cifs_dbg(FYI, "%s: (0x%p)\n", __func__, cifsi->fscache);
 		fscache_uncache_all_inode_pages(cifsi->fscache, inode);
-		fscache_relinquish_cookie(cifsi->fscache, 1);
+		fscache_relinquish_cookie(cifsi->fscache, NULL, true);
 		cifsi->fscache = NULL;
 	}
 }
@@ -110,16 +199,14 @@ void cifs_fscache_reset_inode_cookie(struct inode *inode)
 {
 	struct cifsInodeInfo *cifsi = CIFS_I(inode);
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+	struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
 	struct fscache_cookie *old = cifsi->fscache;
 
 	if (cifsi->fscache) {
 		/* retire the current fscache cache and get a new one */
-		fscache_relinquish_cookie(cifsi->fscache, 1);
+		fscache_relinquish_cookie(cifsi->fscache, NULL, true);
 
-		cifsi->fscache = fscache_acquire_cookie(
-					cifs_sb_master_tcon(cifs_sb)->fscache,
-					&cifs_fscache_inode_object_def,
-					cifsi, true);
+		cifs_fscache_acquire_inode_cookie(cifsi, tcon);
 		cifs_dbg(FYI, "%s: new cookie 0x%p oldcookie 0x%p\n",
 			 __func__, cifsi->fscache, old);
 	}
@@ -239,4 +326,3 @@ void __cifs_fscache_invalidate_page(struct page *page, struct inode *inode)
 	fscache_wait_on_page_write(cookie, page);
 	fscache_uncache_page(cookie, page);
 }
-
diff --git a/fs/cifs/fscache.h b/fs/cifs/fscache.h
index 24794b6cd8ec..c7e3ac251e16 100644
--- a/fs/cifs/fscache.h
+++ b/fs/cifs/fscache.h
@@ -27,6 +27,18 @@
 
 #ifdef CONFIG_CIFS_FSCACHE
 
+/*
+ * Auxiliary data attached to CIFS inode within the cache
+ */
+struct cifs_fscache_inode_auxdata {
+	struct timespec	last_write_time;
+	struct timespec	last_change_time;
+	u64		eof;
+};
+
+/*
+ * cache.c
+ */
 extern struct fscache_netfs cifs_fscache_netfs;
 extern const struct fscache_cookie_def cifs_fscache_server_index_def;
 extern const struct fscache_cookie_def cifs_fscache_super_index_def;
@@ -34,6 +46,7 @@ extern const struct fscache_cookie_def cifs_fscache_inode_object_def;
 
 extern int cifs_fscache_register(void);
 extern void cifs_fscache_unregister(void);
+extern char *extract_sharename(const char *);
 
 /*
  * fscache.c
diff --git a/fs/fscache/cache.c b/fs/fscache/cache.c
index 56cce7fdd39e..c184c5a356ff 100644
--- a/fs/fscache/cache.c
+++ b/fs/fscache/cache.c
@@ -125,7 +125,7 @@ struct fscache_cache *fscache_select_cache_for_object(
 	}
 
 	/* the parent is unbacked */
-	if (cookie->def->type != FSCACHE_COOKIE_TYPE_INDEX) {
+	if (cookie->type != FSCACHE_COOKIE_TYPE_INDEX) {
 		/* cookie not an index and is unbacked */
 		spin_unlock(&cookie->lock);
 		_leave(" = NULL [cookie ub,ni]");
diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c
index ea1f80daaff4..4d6210082a60 100644
--- a/fs/fscache/cookie.c
+++ b/fs/fscache/cookie.c
@@ -58,6 +58,8 @@ void fscache_cookie_init_once(void *_cookie)
 struct fscache_cookie *__fscache_acquire_cookie(
 	struct fscache_cookie *parent,
 	const struct fscache_cookie_def *def,
+	const void *index_key, size_t index_key_len,
+	const void *aux_data, size_t aux_data_len,
 	void *netfs_data,
 	bool enable)
 {
@@ -69,6 +71,13 @@ struct fscache_cookie *__fscache_acquire_cookie(
 	       parent ? (char *) parent->def->name : "<no-parent>",
 	       def->name, netfs_data, enable);
 
+	if (!index_key || !index_key_len || index_key_len > 255 || aux_data_len > 255)
+		return NULL;
+	if (!aux_data || !aux_data_len) {
+		aux_data = NULL;
+		aux_data_len = 0;
+	}
+
 	fscache_stat(&fscache_n_acquires);
 
 	/* if there's no parent cookie, then we don't create one here either */
@@ -79,11 +88,10 @@ struct fscache_cookie *__fscache_acquire_cookie(
 	}
 
 	/* validate the definition */
-	BUG_ON(!def->get_key);
 	BUG_ON(!def->name[0]);
 
 	BUG_ON(def->type == FSCACHE_COOKIE_TYPE_INDEX &&
-	       parent->def->type != FSCACHE_COOKIE_TYPE_INDEX);
+	       parent->type != FSCACHE_COOKIE_TYPE_INDEX);
 
 	/* allocate and initialise a cookie */
 	cookie = kmem_cache_alloc(fscache_cookie_jar, GFP_KERNEL);
@@ -93,6 +101,25 @@ struct fscache_cookie *__fscache_acquire_cookie(
 		return NULL;
 	}
 
+	cookie->key_len		= index_key_len;
+	cookie->aux_len		= aux_data_len;
+
+	if (cookie->key_len <= sizeof(cookie->inline_key)) {
+		memcpy(cookie->inline_key, index_key, cookie->key_len);
+	} else {
+		cookie->key = kmemdup(index_key, cookie->key_len, GFP_KERNEL);
+		if (!cookie->key)
+			goto nomem;
+	}
+
+	if (cookie->aux_len <= sizeof(cookie->inline_aux)) {
+		memcpy(cookie->inline_aux, aux_data, cookie->aux_len);
+	} else {
+		cookie->aux = kmemdup(aux_data, cookie->aux_len, GFP_KERNEL);
+		if (!cookie->aux)
+			goto nomem;
+	}
+
 	atomic_set(&cookie->usage, 1);
 	atomic_set(&cookie->n_children, 0);
 
@@ -108,12 +135,13 @@ struct fscache_cookie *__fscache_acquire_cookie(
 	cookie->parent		= parent;
 	cookie->netfs_data	= netfs_data;
 	cookie->flags		= (1 << FSCACHE_COOKIE_NO_DATA_YET);
-
+	cookie->type		= def->type;
+	
 	/* radix tree insertion won't use the preallocation pool unless it's
 	 * told it may not wait */
 	INIT_RADIX_TREE(&cookie->stores, GFP_NOFS & ~__GFP_DIRECT_RECLAIM);
 
-	switch (cookie->def->type) {
+	switch (cookie->type) {
 	case FSCACHE_COOKIE_TYPE_INDEX:
 		fscache_stat(&fscache_n_cookie_index);
 		break;
@@ -131,7 +159,7 @@ struct fscache_cookie *__fscache_acquire_cookie(
 		/* if the object is an index then we need do nothing more here
 		 * - we create indices on disk when we need them as an index
 		 * may exist in multiple caches */
-		if (cookie->def->type != FSCACHE_COOKIE_TYPE_INDEX) {
+		if (cookie->type != FSCACHE_COOKIE_TYPE_INDEX) {
 			if (fscache_acquire_non_index_cookie(cookie) == 0) {
 				set_bit(FSCACHE_COOKIE_ENABLED, &cookie->flags);
 			} else {
@@ -150,6 +178,14 @@ struct fscache_cookie *__fscache_acquire_cookie(
 	fscache_stat(&fscache_n_acquires_ok);
 	_leave(" = %p", cookie);
 	return cookie;
+
+nomem:
+	if (cookie->aux_len > sizeof(cookie->inline_aux))
+		kfree(cookie->aux);
+	if (cookie->key_len > sizeof(cookie->inline_key))
+		kfree(cookie->key);
+	kmem_cache_free(fscache_cookie_jar, cookie);
+	return NULL;
 }
 EXPORT_SYMBOL(__fscache_acquire_cookie);
 
@@ -157,6 +193,7 @@ EXPORT_SYMBOL(__fscache_acquire_cookie);
  * Enable a cookie to permit it to accept new operations.
  */
 void __fscache_enable_cookie(struct fscache_cookie *cookie,
+			     const void *aux_data,
 			     bool (*can_enable)(void *data),
 			     void *data)
 {
@@ -167,12 +204,14 @@ void __fscache_enable_cookie(struct fscache_cookie *cookie,
 	wait_on_bit_lock(&cookie->flags, FSCACHE_COOKIE_ENABLEMENT_LOCK,
 			 TASK_UNINTERRUPTIBLE);
 
+	fscache_update_aux(cookie, aux_data);
+
 	if (test_bit(FSCACHE_COOKIE_ENABLED, &cookie->flags))
 		goto out_unlock;
 
 	if (can_enable && !can_enable(data)) {
 		/* The netfs decided it didn't want to enable after all */
-	} else if (cookie->def->type != FSCACHE_COOKIE_TYPE_INDEX) {
+	} else if (cookie->type != FSCACHE_COOKIE_TYPE_INDEX) {
 		/* Wait for outstanding disablement to complete */
 		__fscache_wait_on_invalidate(cookie);
 
@@ -431,10 +470,7 @@ void __fscache_invalidate(struct fscache_cookie *cookie)
 	 * there, and if it's doing that, it may as well just retire the
 	 * cookie.
 	 */
-	ASSERTCMP(cookie->def->type, ==, FSCACHE_COOKIE_TYPE_DATAFILE);
-
-	/* We will be updating the cookie too. */
-	BUG_ON(!cookie->def->get_aux);
+	ASSERTCMP(cookie->type, ==, FSCACHE_COOKIE_TYPE_DATAFILE);
 
 	/* If there's an object, we tell the object state machine to handle the
 	 * invalidation on our behalf, otherwise there's nothing to do.
@@ -478,7 +514,7 @@ EXPORT_SYMBOL(__fscache_wait_on_invalidate);
 /*
  * update the index entries backing a cookie
  */
-void __fscache_update_cookie(struct fscache_cookie *cookie)
+void __fscache_update_cookie(struct fscache_cookie *cookie, const void *aux_data)
 {
 	struct fscache_object *object;
 
@@ -492,10 +528,10 @@ void __fscache_update_cookie(struct fscache_cookie *cookie)
 
 	_enter("{%s}", cookie->def->name);
 
-	BUG_ON(!cookie->def->get_aux);
-
 	spin_lock(&cookie->lock);
 
+	fscache_update_aux(cookie, aux_data);
+
 	if (fscache_cookie_enabled(cookie)) {
 		/* update the index entry on disk in each cache backing this
 		 * cookie.
@@ -514,7 +550,9 @@ EXPORT_SYMBOL(__fscache_update_cookie);
 /*
  * Disable a cookie to stop it from accepting new requests from the netfs.
  */
-void __fscache_disable_cookie(struct fscache_cookie *cookie, bool invalidate)
+void __fscache_disable_cookie(struct fscache_cookie *cookie,
+			      const void *aux_data,
+			      bool invalidate)
 {
 	struct fscache_object *object;
 	bool awaken = false;
@@ -533,6 +571,9 @@ void __fscache_disable_cookie(struct fscache_cookie *cookie, bool invalidate)
 
 	wait_on_bit_lock(&cookie->flags, FSCACHE_COOKIE_ENABLEMENT_LOCK,
 			 TASK_UNINTERRUPTIBLE);
+
+	fscache_update_aux(cookie, aux_data);
+
 	if (!test_and_clear_bit(FSCACHE_COOKIE_ENABLED, &cookie->flags))
 		goto out_unlock_enable;
 
@@ -570,7 +611,7 @@ void __fscache_disable_cookie(struct fscache_cookie *cookie, bool invalidate)
 	}
 
 	/* Make sure any pending writes are cancelled. */
-	if (cookie->def->type != FSCACHE_COOKIE_TYPE_INDEX)
+	if (cookie->type != FSCACHE_COOKIE_TYPE_INDEX)
 		fscache_invalidate_writes(cookie);
 
 	/* Reset the cookie state if it wasn't relinquished */
@@ -592,7 +633,9 @@ EXPORT_SYMBOL(__fscache_disable_cookie);
  * - all dependents of this cookie must have already been unregistered
  *   (indices/files/pages)
  */
-void __fscache_relinquish_cookie(struct fscache_cookie *cookie, bool retire)
+void __fscache_relinquish_cookie(struct fscache_cookie *cookie,
+				 const void *aux_data,
+				 bool retire)
 {
 	fscache_stat(&fscache_n_relinquishes);
 	if (retire)
@@ -614,7 +657,7 @@ void __fscache_relinquish_cookie(struct fscache_cookie *cookie, bool retire)
 	if (test_and_set_bit(FSCACHE_COOKIE_RELINQUISHED, &cookie->flags))
 		BUG();
 
-	__fscache_disable_cookie(cookie, retire);
+	__fscache_disable_cookie(cookie, aux_data, retire);
 
 	/* Clear pointers back to the netfs */
 	cookie->netfs_data	= NULL;
@@ -656,6 +699,10 @@ void fscache_cookie_put(struct fscache_cookie *cookie,
 
 		parent = cookie->parent;
 		BUG_ON(!hlist_empty(&cookie->backing_objects));
+		if (cookie->aux_len > sizeof(cookie->inline_aux))
+			kfree(cookie->aux);
+		if (cookie->key_len > sizeof(cookie->inline_key))
+			kfree(cookie->key);
 		kmem_cache_free(fscache_cookie_jar, cookie);
 
 		cookie = parent;
@@ -670,7 +717,8 @@ void fscache_cookie_put(struct fscache_cookie *cookie,
  *
  * NOTE: it only serves no-index type
  */
-int __fscache_check_consistency(struct fscache_cookie *cookie)
+int __fscache_check_consistency(struct fscache_cookie *cookie,
+				const void *aux_data)
 {
 	struct fscache_operation *op;
 	struct fscache_object *object;
@@ -679,7 +727,7 @@ int __fscache_check_consistency(struct fscache_cookie *cookie)
 
 	_enter("%p,", cookie);
 
-	ASSERTCMP(cookie->def->type, ==, FSCACHE_COOKIE_TYPE_DATAFILE);
+	ASSERTCMP(cookie->type, ==, FSCACHE_COOKIE_TYPE_DATAFILE);
 
 	if (fscache_wait_for_deferred_lookup(cookie) < 0)
 		return -ERESTARTSYS;
@@ -699,6 +747,8 @@ int __fscache_check_consistency(struct fscache_cookie *cookie)
 
 	spin_lock(&cookie->lock);
 
+	fscache_update_aux(cookie, aux_data);
+
 	if (!fscache_cookie_enabled(cookie) ||
 	    hlist_empty(&cookie->backing_objects))
 		goto inconsistent;
diff --git a/fs/fscache/fsdef.c b/fs/fscache/fsdef.c
index 5a117df2a9ef..1122e97d56e8 100644
--- a/fs/fscache/fsdef.c
+++ b/fs/fscache/fsdef.c
@@ -13,12 +13,6 @@
 #include <linux/module.h>
 #include "internal.h"
 
-static uint16_t fscache_fsdef_netfs_get_key(const void *cookie_netfs_data,
-					    void *buffer, uint16_t bufmax);
-
-static uint16_t fscache_fsdef_netfs_get_aux(const void *cookie_netfs_data,
-					    void *buffer, uint16_t bufmax);
-
 static
 enum fscache_checkaux fscache_fsdef_netfs_check_aux(void *cookie_netfs_data,
 						    const void *data,
@@ -60,6 +54,7 @@ struct fscache_cookie fscache_fsdef_index = {
 	.backing_objects = HLIST_HEAD_INIT,
 	.def		= &fscache_fsdef_index_def,
 	.flags		= 1 << FSCACHE_COOKIE_ENABLED,
+	.type		= FSCACHE_COOKIE_TYPE_INDEX,
 };
 EXPORT_SYMBOL(fscache_fsdef_index);
 
@@ -71,52 +66,10 @@ EXPORT_SYMBOL(fscache_fsdef_index);
 struct fscache_cookie_def fscache_fsdef_netfs_def = {
 	.name		= "FSDEF.netfs",
 	.type		= FSCACHE_COOKIE_TYPE_INDEX,
-	.get_key	= fscache_fsdef_netfs_get_key,
-	.get_aux	= fscache_fsdef_netfs_get_aux,
 	.check_aux	= fscache_fsdef_netfs_check_aux,
 };
 
 /*
- * get the key data for an FSDEF index record - this is the name of the netfs
- * for which this entry is created
- */
-static uint16_t fscache_fsdef_netfs_get_key(const void *cookie_netfs_data,
-					    void *buffer, uint16_t bufmax)
-{
-	const struct fscache_netfs *netfs = cookie_netfs_data;
-	unsigned klen;
-
-	_enter("{%s.%u},", netfs->name, netfs->version);
-
-	klen = strlen(netfs->name);
-	if (klen > bufmax)
-		return 0;
-
-	memcpy(buffer, netfs->name, klen);
-	return klen;
-}
-
-/*
- * get the auxiliary data for an FSDEF index record - this is the index
- * structure version number of the netfs for which this version is created
- */
-static uint16_t fscache_fsdef_netfs_get_aux(const void *cookie_netfs_data,
-					    void *buffer, uint16_t bufmax)
-{
-	const struct fscache_netfs *netfs = cookie_netfs_data;
-	unsigned dlen;
-
-	_enter("{%s.%u},", netfs->name, netfs->version);
-
-	dlen = sizeof(uint32_t);
-	if (dlen > bufmax)
-		return 0;
-
-	memcpy(buffer, &netfs->version, dlen);
-	return dlen;
-}
-
-/*
  * check that the index structure version number stored in the auxiliary data
  * matches the one the netfs gave us
  */
diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h
index c27e2db3004e..5f905a499306 100644
--- a/fs/fscache/internal.h
+++ b/fs/fscache/internal.h
@@ -342,6 +342,27 @@ void fscache_put_context(struct fscache_cookie *cookie, void *context)
 		cookie->def->put_context(cookie->netfs_data, context);
 }
 
+/*
+ * Update the auxiliary data on a cookie.
+ */
+static inline
+void fscache_update_aux(struct fscache_cookie *cookie, const void *aux_data)
+{
+	void *p;
+
+	if (!aux_data)
+		return;
+	if (cookie->aux_len <= sizeof(cookie->inline_aux))
+		p = cookie->inline_aux;
+	else
+		p = cookie->aux;
+
+	if (memcmp(p, aux_data, cookie->aux_len) != 0) {
+		memcpy(p, aux_data, cookie->aux_len);
+		set_bit(FSCACHE_COOKIE_AUX_UPDATED, &cookie->flags);
+	}
+}
+
 /*****************************************************************************/
 /*
  * debug tracing
diff --git a/fs/fscache/netfs.c b/fs/fscache/netfs.c
index c816600d1dde..a5998dfab7e7 100644
--- a/fs/fscache/netfs.c
+++ b/fs/fscache/netfs.c
@@ -37,6 +37,19 @@ int __fscache_register_netfs(struct fscache_netfs *netfs)
 		return -ENOMEM;
 	}
 
+	cookie->key_len = strlen(netfs->name);
+	if (cookie->key_len <= sizeof(cookie->inline_key)) {
+		memcpy(cookie->inline_key, netfs->name, strlen(netfs->name));
+	} else {
+		ret = -ENOMEM;
+		cookie->key = kmemdup(netfs->name, cookie->key_len, GFP_KERNEL);
+		if (!cookie->key)
+			goto nomem;
+	}
+
+	cookie->aux_len = sizeof(netfs->version);
+	memcpy(cookie->inline_aux, &netfs->version, cookie->aux_len);
+
 	/* initialise the primary index cookie */
 	atomic_set(&cookie->usage, 1);
 	atomic_set(&cookie->n_children, 0);
@@ -46,6 +59,7 @@ int __fscache_register_netfs(struct fscache_netfs *netfs)
 	cookie->parent		= &fscache_fsdef_index;
 	cookie->netfs_data	= netfs;
 	cookie->flags		= 1 << FSCACHE_COOKIE_ENABLED;
+	cookie->type		= FSCACHE_COOKIE_TYPE_INDEX;
 
 	spin_lock_init(&cookie->lock);
 	spin_lock_init(&cookie->stores_lock);
@@ -73,6 +87,7 @@ int __fscache_register_netfs(struct fscache_netfs *netfs)
 already_registered:
 	up_write(&fscache_addremove_sem);
 
+nomem:
 	if (ret < 0)
 		kmem_cache_free(fscache_cookie_jar, cookie);
 
@@ -92,7 +107,7 @@ void __fscache_unregister_netfs(struct fscache_netfs *netfs)
 	down_write(&fscache_addremove_sem);
 
 	list_del(&netfs->link);
-	fscache_relinquish_cookie(netfs->primary_index, 0);
+	fscache_relinquish_cookie(netfs->primary_index, NULL, false);
 
 	up_write(&fscache_addremove_sem);
 
diff --git a/fs/fscache/object-list.c b/fs/fscache/object-list.c
index 0438d4cd91ef..43e6e28c164f 100644
--- a/fs/fscache/object-list.c
+++ b/fs/fscache/object-list.c
@@ -36,8 +36,6 @@ struct fscache_objlist_data {
 #define FSCACHE_OBJLIST_CONFIG_NOEVENTS	0x00000800	/* show objects without no events */
 #define FSCACHE_OBJLIST_CONFIG_WORK	0x00001000	/* show objects with work */
 #define FSCACHE_OBJLIST_CONFIG_NOWORK	0x00002000	/* show objects without work */
-
-	u8		buf[512];	/* key and aux data buffer */
 };
 
 /*
@@ -170,7 +168,7 @@ static int fscache_objlist_show(struct seq_file *m, void *v)
 	struct fscache_cookie *cookie;
 	unsigned long config = data->config;
 	char _type[3], *type;
-	u8 *buf = data->buf, *p;
+	u8 *p;
 
 	if ((unsigned long) v == 1) {
 		seq_puts(m, "OBJECT   PARENT   STAT CHLDN OPS OOP IPR EX READS"
@@ -254,7 +252,7 @@ static int fscache_objlist_show(struct seq_file *m, void *v)
 	if (fscache_use_cookie(obj)) {
 		uint16_t keylen = 0, auxlen = 0;
 
-		switch (cookie->def->type) {
+		switch (cookie->type) {
 		case 0:
 			type = "IX";
 			break;
@@ -263,7 +261,7 @@ static int fscache_objlist_show(struct seq_file *m, void *v)
 			break;
 		default:
 			snprintf(_type, sizeof(_type), "%02u",
-				 cookie->def->type);
+				 cookie->type);
 			type = _type;
 			break;
 		}
@@ -274,30 +272,30 @@ static int fscache_objlist_show(struct seq_file *m, void *v)
 			   cookie->flags,
 			   cookie->netfs_data);
 
-		if (cookie->def->get_key &&
-		    config & FSCACHE_OBJLIST_CONFIG_KEY)
-			keylen = cookie->def->get_key(cookie->netfs_data,
-						      buf, 400);
+		if (config & FSCACHE_OBJLIST_CONFIG_KEY)
+			keylen = cookie->key_len;
 
-		if (cookie->def->get_aux &&
-		    config & FSCACHE_OBJLIST_CONFIG_AUX)
-			auxlen = cookie->def->get_aux(cookie->netfs_data,
-						      buf + keylen, 512 - keylen);
-		fscache_unuse_cookie(obj);
+		if (config & FSCACHE_OBJLIST_CONFIG_AUX)
+			auxlen = cookie->aux_len;
 
 		if (keylen > 0 || auxlen > 0) {
 			seq_puts(m, " ");
-			for (p = buf; keylen > 0; keylen--)
+			p = keylen <= sizeof(cookie->inline_key) ?
+				cookie->inline_key : cookie->key;
+			for (; keylen > 0; keylen--)
 				seq_printf(m, "%02x", *p++);
 			if (auxlen > 0) {
 				if (config & FSCACHE_OBJLIST_CONFIG_KEY)
 					seq_puts(m, ", ");
+				p = auxlen <= sizeof(cookie->inline_aux) ?
+					cookie->inline_aux : cookie->aux;
 				for (; auxlen > 0; auxlen--)
 					seq_printf(m, "%02x", *p++);
 			}
 		}
 
 		seq_puts(m, "\n");
+		fscache_unuse_cookie(obj);
 	} else {
 		seq_puts(m, "<no_netfs>\n");
 	}
diff --git a/fs/fscache/object.c b/fs/fscache/object.c
index 7c0ddb7ae29a..a7b28f876fde 100644
--- a/fs/fscache/object.c
+++ b/fs/fscache/object.c
@@ -144,6 +144,7 @@ static void fscache_put_object(struct fscache_object *,
 			       enum fscache_obj_ref_trace);
 static bool fscache_enqueue_dependents(struct fscache_object *, int);
 static void fscache_dequeue_object(struct fscache_object *);
+static void fscache_update_aux_data(struct fscache_object *);
 
 /*
  * we need to notify the parent when an op completes that we had outstanding
@@ -711,6 +712,11 @@ static const struct fscache_state *fscache_drop_object(struct fscache_object *ob
 	ASSERT(cookie != NULL);
 	ASSERT(!hlist_unhashed(&object->cookie_link));
 
+	if (test_bit(FSCACHE_COOKIE_AUX_UPDATED, &cookie->flags)) {
+		_debug("final update");
+		fscache_update_aux_data(object);
+	}
+
 	/* Make sure the cookie no longer points here and that the netfs isn't
 	 * waiting for us.
 	 */
@@ -1037,6 +1043,17 @@ static const struct fscache_state *fscache_invalidate_object(struct fscache_obje
 }
 
 /*
+ * Update auxiliary data.
+ */
+static void fscache_update_aux_data(struct fscache_object *object)
+{
+	fscache_stat(&fscache_n_updates_run);
+	fscache_stat(&fscache_n_cop_update_object);
+	object->cache->ops->update_object(object);
+	fscache_stat_d(&fscache_n_cop_update_object);
+}
+
+/*
  * Asynchronously update an object.
  */
 static const struct fscache_state *fscache_update_object(struct fscache_object *object,
@@ -1044,10 +1061,7 @@ static const struct fscache_state *fscache_update_object(struct fscache_object *
 {
 	_enter("{OBJ%x},%d", object->debug_id, event);
 
-	fscache_stat(&fscache_n_updates_run);
-	fscache_stat(&fscache_n_cop_update_object);
-	object->cache->ops->update_object(object);
-	fscache_stat_d(&fscache_n_cop_update_object);
+	fscache_update_aux_data(object);
 
 	_leave("");
 	return transit_to(WAIT_FOR_CMD);
diff --git a/fs/fscache/operation.c b/fs/fscache/operation.c
index 7a071e1e952d..e30c5975ea58 100644
--- a/fs/fscache/operation.c
+++ b/fs/fscache/operation.c
@@ -506,7 +506,7 @@ void fscache_put_operation(struct fscache_operation *op)
 	if (!atomic_dec_and_test(&op->usage))
 		return;
 
-	trace_fscache_op(op->object->cookie, op, fscache_op_put);
+	trace_fscache_op(op->object ? op->object->cookie : NULL, op, fscache_op_put);
 
 	_debug("PUT OP");
 	ASSERTIFCMP(op->state != FSCACHE_OP_ST_INITIALISED &&
diff --git a/fs/nfs/fscache-index.c b/fs/nfs/fscache-index.c
index 0ee4b93d36ea..6fd3679b7137 100644
--- a/fs/nfs/fscache-index.c
+++ b/fs/nfs/fscache-index.c
@@ -50,59 +50,6 @@ void nfs_fscache_unregister(void)
 }
 
 /*
- * Layout of the key for an NFS server cache object.
- */
-struct nfs_server_key {
-	uint16_t	nfsversion;		/* NFS protocol version */
-	uint16_t	family;			/* address family */
-	uint16_t	port;			/* IP port */
-	union {
-		struct in_addr	ipv4_addr;	/* IPv4 address */
-		struct in6_addr ipv6_addr;	/* IPv6 address */
-	} addr[0];
-};
-
-/*
- * Generate a key to describe a server in the main NFS index
- * - We return the length of the key, or 0 if we can't generate one
- */
-static uint16_t nfs_server_get_key(const void *cookie_netfs_data,
-				   void *buffer, uint16_t bufmax)
-{
-	const struct nfs_client *clp = cookie_netfs_data;
-	const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) &clp->cl_addr;
-	const struct sockaddr_in *sin = (struct sockaddr_in *) &clp->cl_addr;
-	struct nfs_server_key *key = buffer;
-	uint16_t len = sizeof(struct nfs_server_key);
-
-	memset(key, 0, len);
-	key->nfsversion = clp->rpc_ops->version;
-	key->family = clp->cl_addr.ss_family;
-
-	switch (clp->cl_addr.ss_family) {
-	case AF_INET:
-		key->port = sin->sin_port;
-		key->addr[0].ipv4_addr = sin->sin_addr;
-		len += sizeof(key->addr[0].ipv4_addr);
-		break;
-
-	case AF_INET6:
-		key->port = sin6->sin6_port;
-		key->addr[0].ipv6_addr = sin6->sin6_addr;
-		len += sizeof(key->addr[0].ipv6_addr);
-		break;
-
-	default:
-		printk(KERN_WARNING "NFS: Unknown network family '%d'\n",
-		       clp->cl_addr.ss_family);
-		len = 0;
-		break;
-	}
-
-	return len;
-}
-
-/*
  * Define the server object for FS-Cache.  This is used to describe a server
  * object to fscache_acquire_cookie().  It is keyed by the NFS protocol and
  * server address parameters.
@@ -110,33 +57,9 @@ static uint16_t nfs_server_get_key(const void *cookie_netfs_data,
 const struct fscache_cookie_def nfs_fscache_server_index_def = {
 	.name		= "NFS.server",
 	.type 		= FSCACHE_COOKIE_TYPE_INDEX,
-	.get_key	= nfs_server_get_key,
 };
 
 /*
- * Generate a key to describe a superblock key in the main NFS index
- */
-static uint16_t nfs_super_get_key(const void *cookie_netfs_data,
-				  void *buffer, uint16_t bufmax)
-{
-	const struct nfs_fscache_key *key;
-	const struct nfs_server *nfss = cookie_netfs_data;
-	uint16_t len;
-
-	key = nfss->fscache_key;
-	len = sizeof(key->key) + key->key.uniq_len;
-	if (len > bufmax) {
-		len = 0;
-	} else {
-		memcpy(buffer, &key->key, sizeof(key->key));
-		memcpy(buffer + sizeof(key->key),
-		       key->key.uniquifier, key->key.uniq_len);
-	}
-
-	return len;
-}
-
-/*
  * Define the superblock object for FS-Cache.  This is used to describe a
  * superblock object to fscache_acquire_cookie().  It is keyed by all the NFS
  * parameters that might cause a separate superblock.
@@ -144,41 +67,9 @@ static uint16_t nfs_super_get_key(const void *cookie_netfs_data,
 const struct fscache_cookie_def nfs_fscache_super_index_def = {
 	.name		= "NFS.super",
 	.type 		= FSCACHE_COOKIE_TYPE_INDEX,
-	.get_key	= nfs_super_get_key,
 };
 
 /*
- * Definition of the auxiliary data attached to NFS inode storage objects
- * within the cache.
- *
- * The contents of this struct are recorded in the on-disk local cache in the
- * auxiliary data attached to the data storage object backing an inode.  This
- * permits coherency to be managed when a new inode binds to an already extant
- * cache object.
- */
-struct nfs_fscache_inode_auxdata {
-	struct timespec	mtime;
-	struct timespec	ctime;
-	loff_t		size;
-	u64		change_attr;
-};
-
-/*
- * Generate a key to describe an NFS inode in an NFS server's index
- */
-static uint16_t nfs_fscache_inode_get_key(const void *cookie_netfs_data,
-					  void *buffer, uint16_t bufmax)
-{
-	const struct nfs_inode *nfsi = cookie_netfs_data;
-	uint16_t nsize;
-
-	/* use the inode's NFS filehandle as the key */
-	nsize = nfsi->fh.size;
-	memcpy(buffer, nfsi->fh.data, nsize);
-	return nsize;
-}
-
-/*
  * Get certain file attributes from the netfs data
  * - This function can be absent for an index
  * - Not permitted to return an error
@@ -193,35 +84,6 @@ static void nfs_fscache_inode_get_attr(const void *cookie_netfs_data,
 }
 
 /*
- * Get the auxiliary data from netfs data
- * - This function can be absent if the index carries no state data
- * - Should store the auxiliary data in the buffer
- * - Should return the amount of amount stored
- * - Not permitted to return an error
- * - The netfs data from the cookie being used as the source is presented
- */
-static uint16_t nfs_fscache_inode_get_aux(const void *cookie_netfs_data,
-					  void *buffer, uint16_t bufmax)
-{
-	struct nfs_fscache_inode_auxdata auxdata;
-	const struct nfs_inode *nfsi = cookie_netfs_data;
-
-	memset(&auxdata, 0, sizeof(auxdata));
-	auxdata.size = nfsi->vfs_inode.i_size;
-	auxdata.mtime = nfsi->vfs_inode.i_mtime;
-	auxdata.ctime = nfsi->vfs_inode.i_ctime;
-
-	if (NFS_SERVER(&nfsi->vfs_inode)->nfs_client->rpc_ops->version == 4)
-		auxdata.change_attr = inode_peek_iversion_raw(&nfsi->vfs_inode);
-
-	if (bufmax > sizeof(auxdata))
-		bufmax = sizeof(auxdata);
-
-	memcpy(buffer, &auxdata, bufmax);
-	return bufmax;
-}
-
-/*
  * Consult the netfs about the state of an object
  * - This function can be absent if the index carries no state data
  * - The netfs data from the cookie being used as the target is
@@ -288,9 +150,7 @@ static void nfs_fh_put_context(void *cookie_netfs_data, void *context)
 const struct fscache_cookie_def nfs_fscache_inode_object_def = {
 	.name		= "NFS.fh",
 	.type		= FSCACHE_COOKIE_TYPE_DATAFILE,
-	.get_key	= nfs_fscache_inode_get_key,
 	.get_attr	= nfs_fscache_inode_get_attr,
-	.get_aux	= nfs_fscache_inode_get_aux,
 	.check_aux	= nfs_fscache_inode_check_aux,
 	.get_context	= nfs_fh_get_context,
 	.put_context	= nfs_fh_put_context,
diff --git a/fs/nfs/fscache.c b/fs/nfs/fscache.c
index d63bea8bbfbb..c45ba2691cee 100644
--- a/fs/nfs/fscache.c
+++ b/fs/nfs/fscache.c
@@ -18,6 +18,7 @@
 #include <linux/in6.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>
+#include <linux/iversion.h>
 
 #include "internal.h"
 #include "iostat.h"
@@ -29,6 +30,21 @@ static struct rb_root nfs_fscache_keys = RB_ROOT;
 static DEFINE_SPINLOCK(nfs_fscache_keys_lock);
 
 /*
+ * Layout of the key for an NFS server cache object.
+ */
+struct nfs_server_key {
+	struct {
+		uint16_t	nfsversion;		/* NFS protocol version */
+		uint16_t	family;			/* address family */
+		__be16		port;			/* IP port */
+	} hdr;
+	union {
+		struct in_addr	ipv4_addr;	/* IPv4 address */
+		struct in6_addr ipv6_addr;	/* IPv6 address */
+	};
+} __packed;
+
+/*
  * Get the per-client index cookie for an NFS client if the appropriate mount
  * flag was set
  * - We always try and get an index cookie for the client, but get filehandle
@@ -36,9 +52,40 @@ static DEFINE_SPINLOCK(nfs_fscache_keys_lock);
  */
 void nfs_fscache_get_client_cookie(struct nfs_client *clp)
 {
+	const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) &clp->cl_addr;
+	const struct sockaddr_in *sin = (struct sockaddr_in *) &clp->cl_addr;
+	struct nfs_server_key key;
+	uint16_t len = sizeof(key.hdr);
+
+	memset(&key, 0, sizeof(key));
+	key.hdr.nfsversion = clp->rpc_ops->version;
+	key.hdr.family = clp->cl_addr.ss_family;
+
+	switch (clp->cl_addr.ss_family) {
+	case AF_INET:
+		key.hdr.port = sin->sin_port;
+		key.ipv4_addr = sin->sin_addr;
+		len += sizeof(key.ipv4_addr);
+		break;
+
+	case AF_INET6:
+		key.hdr.port = sin6->sin6_port;
+		key.ipv6_addr = sin6->sin6_addr;
+		len += sizeof(key.ipv6_addr);
+		break;
+
+	default:
+		printk(KERN_WARNING "NFS: Unknown network family '%d'\n",
+		       clp->cl_addr.ss_family);
+		clp->fscache = NULL;
+		return;
+	}
+
 	/* create a cache index for looking up filehandles */
 	clp->fscache = fscache_acquire_cookie(nfs_fscache_netfs.primary_index,
 					      &nfs_fscache_server_index_def,
+					      &key, len,
+					      NULL, 0,
 					      clp, true);
 	dfprintk(FSCACHE, "NFS: get client cookie (0x%p/0x%p)\n",
 		 clp, clp->fscache);
@@ -52,7 +99,7 @@ void nfs_fscache_release_client_cookie(struct nfs_client *clp)
 	dfprintk(FSCACHE, "NFS: releasing client cookie (0x%p/0x%p)\n",
 		 clp, clp->fscache);
 
-	fscache_relinquish_cookie(clp->fscache, 0);
+	fscache_relinquish_cookie(clp->fscache, NULL, false);
 	clp->fscache = NULL;
 }
 
@@ -139,6 +186,8 @@ void nfs_fscache_get_super_cookie(struct super_block *sb, const char *uniq, int
 	/* create a cache index for looking up filehandles */
 	nfss->fscache = fscache_acquire_cookie(nfss->nfs_client->fscache,
 					       &nfs_fscache_super_index_def,
+					       key, sizeof(*key) + ulen,
+					       NULL, 0,
 					       nfss, true);
 	dfprintk(FSCACHE, "NFS: get superblock cookie (0x%p/0x%p)\n",
 		 nfss, nfss->fscache);
@@ -163,7 +212,7 @@ void nfs_fscache_release_super_cookie(struct super_block *sb)
 	dfprintk(FSCACHE, "NFS: releasing superblock cookie (0x%p/0x%p)\n",
 		 nfss, nfss->fscache);
 
-	fscache_relinquish_cookie(nfss->fscache, 0);
+	fscache_relinquish_cookie(nfss->fscache, NULL, false);
 	nfss->fscache = NULL;
 
 	if (nfss->fscache_key) {
@@ -180,13 +229,25 @@ void nfs_fscache_release_super_cookie(struct super_block *sb)
  */
 void nfs_fscache_init_inode(struct inode *inode)
 {
+	struct nfs_fscache_inode_auxdata auxdata;
 	struct nfs_inode *nfsi = NFS_I(inode);
 
 	nfsi->fscache = NULL;
 	if (!S_ISREG(inode->i_mode))
 		return;
+
+	memset(&auxdata, 0, sizeof(auxdata));
+	auxdata.size = nfsi->vfs_inode.i_size;
+	auxdata.mtime = nfsi->vfs_inode.i_mtime;
+	auxdata.ctime = nfsi->vfs_inode.i_ctime;
+
+	if (NFS_SERVER(&nfsi->vfs_inode)->nfs_client->rpc_ops->version == 4)
+		auxdata.change_attr = inode_peek_iversion_raw(&nfsi->vfs_inode);
+
 	nfsi->fscache = fscache_acquire_cookie(NFS_SB(inode->i_sb)->fscache,
 					       &nfs_fscache_inode_object_def,
+					       nfsi->fh.data, nfsi->fh.size,
+					       &auxdata, sizeof(auxdata),
 					       nfsi, false);
 }
 
@@ -195,12 +256,17 @@ void nfs_fscache_init_inode(struct inode *inode)
  */
 void nfs_fscache_clear_inode(struct inode *inode)
 {
+	struct nfs_fscache_inode_auxdata auxdata;
 	struct nfs_inode *nfsi = NFS_I(inode);
 	struct fscache_cookie *cookie = nfs_i_fscache(inode);
 
 	dfprintk(FSCACHE, "NFS: clear cookie (0x%p/0x%p)\n", nfsi, cookie);
 
-	fscache_relinquish_cookie(cookie, false);
+	memset(&auxdata, 0, sizeof(auxdata));
+	auxdata.size = nfsi->vfs_inode.i_size;
+	auxdata.mtime = nfsi->vfs_inode.i_mtime;
+	auxdata.ctime = nfsi->vfs_inode.i_ctime;
+	fscache_relinquish_cookie(cookie, &auxdata, false);
 	nfsi->fscache = NULL;
 }
 
@@ -232,20 +298,27 @@ static bool nfs_fscache_can_enable(void *data)
  */
 void nfs_fscache_open_file(struct inode *inode, struct file *filp)
 {
+	struct nfs_fscache_inode_auxdata auxdata;
 	struct nfs_inode *nfsi = NFS_I(inode);
 	struct fscache_cookie *cookie = nfs_i_fscache(inode);
 
 	if (!fscache_cookie_valid(cookie))
 		return;
 
+	memset(&auxdata, 0, sizeof(auxdata));
+	auxdata.size = nfsi->vfs_inode.i_size;
+	auxdata.mtime = nfsi->vfs_inode.i_mtime;
+	auxdata.ctime = nfsi->vfs_inode.i_ctime;
+
 	if (inode_is_open_for_write(inode)) {
 		dfprintk(FSCACHE, "NFS: nfsi 0x%p disabling cache\n", nfsi);
 		clear_bit(NFS_INO_FSCACHE, &nfsi->flags);
-		fscache_disable_cookie(cookie, true);
+		fscache_disable_cookie(cookie, &auxdata, true);
 		fscache_uncache_all_inode_pages(cookie, inode);
 	} else {
 		dfprintk(FSCACHE, "NFS: nfsi 0x%p enabling cache\n", nfsi);
-		fscache_enable_cookie(cookie, nfs_fscache_can_enable, inode);
+		fscache_enable_cookie(cookie, &auxdata,
+				      nfs_fscache_can_enable, inode);
 		if (fscache_cookie_enabled(cookie))
 			set_bit(NFS_INO_FSCACHE, &NFS_I(inode)->flags);
 	}
diff --git a/fs/nfs/fscache.h b/fs/nfs/fscache.h
index d7fe3e799f2f..96e989f579d1 100644
--- a/fs/nfs/fscache.h
+++ b/fs/nfs/fscache.h
@@ -57,6 +57,22 @@ struct nfs_fscache_key {
 };
 
 /*
+ * Definition of the auxiliary data attached to NFS inode storage objects
+ * within the cache.
+ *
+ * The contents of this struct are recorded in the on-disk local cache in the
+ * auxiliary data attached to the data storage object backing an inode.  This
+ * permits coherency to be managed when a new inode binds to an already extant
+ * cache object.
+ */
+struct nfs_fscache_inode_auxdata {
+	struct timespec	mtime;
+	struct timespec	ctime;
+	loff_t		size;
+	u64		change_attr;
+};
+
+/*
  * fscache-index.c
  */
 extern struct fscache_netfs nfs_fscache_netfs;
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-09-26 23:29:20 +0000