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Diffstat (limited to 'fs/nfs/fscache.c')
-rw-r--r--fs/nfs/fscache.c83
1 files changed, 78 insertions, 5 deletions
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);
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-17 00:15:54 +0000