xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

NFS: Generalise the nfs_client structure

Browse Source 
Generalise the nfs_client structure by:

 (1) Moving nfs_client to a more general place (nfs_fs_sb.h).

 (2) Renaming its maintenance routines to be non-NFS4 specific.

 (3) Move those maintenance routines to a new non-NFS4 specific file (client.c)
     and move the declarations to internal.h.

 (4) Make nfs_find/get_client() take a full sockaddr_in to include the port
     number (will be required for NFS2/3).

 (5) Make nfs_find/get_client() take the NFS protocol version (again will be
     required to differentiate NFS2, 3 & 4 client records).

Also:

 (6) Make nfs_client construction proceed akin to inodes, marking them as under
     construction and providing a function to indicate completion.

 (7) Make nfs_get_client() wait interruptibly if it finds a client that it can
     share, but that client is currently being constructed.

 (8) Make nfs4_create_client() use (6) and (7) instead of locking cl_sem.

Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
David Howells
2006-08-22 20:06:10 -04:00
committed by Trond Myklebust
parent e9326dcab4
commit 24c8dbbb5f
12 changed files with 425 additions and 222 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
include/linux/nfs_fs_sb.h
View File

@@ -6,6 +6,66 @@
struct nfs_iostats;
/*
* The nfs_client identifies our client state to the server.
*/
struct nfs_client {
atomic_t cl_count;
int cl_cons_state; /* current construction state (-ve: init error) */
#define NFS_CS_READY 0 /* ready to be used */
#define NFS_CS_INITING 1 /* busy initialising */
int cl_nfsversion; /* NFS protocol version */
unsigned long cl_res_state; /* NFS resources state */
#define NFS_CS_RPCIOD 0 /* - rpciod started */
#define NFS_CS_CALLBACK 1 /* - callback started */
#define NFS_CS_IDMAP 2 /* - idmap started */
struct sockaddr_in cl_addr; /* server identifier */
char * cl_hostname; /* hostname of server */
struct list_head cl_share_link; /* link in global client list */
struct list_head cl_superblocks; /* List of nfs_server structs */
struct rpc_clnt * cl_rpcclient;
#ifdef CONFIG_NFS_V4
u64 cl_clientid; /* constant */
nfs4_verifier cl_confirm;
unsigned long cl_state;
u32 cl_lockowner_id;
/*
* The following rwsem ensures exclusive access to the server
* while we recover the state following a lease expiration.
*/
struct rw_semaphore cl_sem;
struct list_head cl_delegations;
struct list_head cl_state_owners;
struct list_head cl_unused;
int cl_nunused;
spinlock_t cl_lock;
unsigned long cl_lease_time;
unsigned long cl_last_renewal;
struct work_struct cl_renewd;
struct work_struct cl_recoverd;
struct rpc_wait_queue cl_rpcwaitq;
/* used for the setclientid verifier */
struct timespec cl_boot_time;
/* idmapper */
struct idmap * cl_idmap;
/* Our own IP address, as a null-terminated string.
* This is used to generate the clientid, and the callback address.
*/
char cl_ipaddr[16];
unsigned char cl_id_uniquifier;
#endif
};
/*
* NFS client parameters stored in the superblock.
*/