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authorBenny Halevy <bhalevy@panasas.com>2011-05-20 13:47:33 +0200
committerBoaz Harrosh <bharrosh@panasas.com>2011-05-29 20:50:42 +0300
commit1775bc342c6eacd6304493cbb2e0cda1a0182246 (patch)
treeb0a884a41f565a41957524146ff6ee51b2b7db7b /fs/nfs/pnfs.h
parenta1eaecbc4c8307e27772d6584ef85a2e93250661 (diff)
downloadlinux-1775bc342c6eacd6304493cbb2e0cda1a0182246.tar.bz2
NFSv4.1: purge deviceid cache on nfs_free_client
Use the pnfs_layoutdriver_type both as a qualifier for the deviceid, distinguishing deviceid from different layout types on the server, and for freeing the layout-driver allocated structure containing the nfs4_deviceid_node. [BUG in _deviceid_purge_client] [layout_driver MUST set free_deviceid_node if using dev-cache] [let ver < 4.1 compile] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [removed EXPORT_SYMBOL_GPL(nfs4_deviceid_purge_client)] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Diffstat (limited to 'fs/nfs/pnfs.h')
-rw-r--r--fs/nfs/pnfs.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 3831ad04a231..80a5d0e2cc43 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -65,6 +65,8 @@ enum {
NFS_LAYOUT_DESTROYED, /* no new use of layout allowed */
};
+struct nfs4_deviceid_node;
+
/* Per-layout driver specific registration structure */
struct pnfs_layoutdriver_type {
struct list_head pnfs_tblid;
@@ -90,6 +92,8 @@ struct pnfs_layoutdriver_type {
*/
enum pnfs_try_status (*read_pagelist) (struct nfs_read_data *nfs_data);
enum pnfs_try_status (*write_pagelist) (struct nfs_write_data *nfs_data, int how);
+
+ void (*free_deviceid_node) (struct nfs4_deviceid_node *);
};
struct pnfs_layout_hdr {
@@ -160,6 +164,7 @@ int pnfs_layoutcommit_inode(struct inode *inode, bool sync);
/* pnfs_dev.c */
struct nfs4_deviceid_node {
struct hlist_node node;
+ const struct pnfs_layoutdriver_type *ld;
const struct nfs_client *nfs_client;
struct nfs4_deviceid deviceid;
atomic_t ref;
@@ -169,10 +174,12 @@ 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_init_deviceid_node(struct nfs4_deviceid_node *,
+ const struct pnfs_layoutdriver_type *,
const struct nfs_client *,
const struct nfs4_deviceid *);
struct nfs4_deviceid_node *nfs4_insert_deviceid_node(struct nfs4_deviceid_node *);
bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *);
+void nfs4_deviceid_purge_client(const struct nfs_client *);
static inline int lo_fail_bit(u32 iomode)
{
@@ -349,6 +356,10 @@ static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync)
{
return 0;
}
+
+static inline void nfs4_deviceid_purge_client(struct nfs_client *ncl)
+{
+}
#endif /* CONFIG_NFS_V4_1 */
#endif /* FS_NFS_PNFS_H */