kernel-ark/include/linux/nfs_fs_sb.h
Chuck Lever 67ec9f46b8 NFS: report how long an NFS file system has been mounted
Add a field in nfs_server to record a timestamp when a mount succeeds.
Report the number of seconds the file system has been mounted via
nfs_show_stats().

Test plan:
Mount an NFS file system, watch the mountstats reports and compare with
clock time.

Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-03-20 13:44:15 -05:00

66 lines
2.1 KiB
C

#ifndef _NFS_FS_SB
#define _NFS_FS_SB
#include <linux/list.h>
#include <linux/backing-dev.h>
struct nfs_iostats;
/*
* NFS client parameters stored in the superblock.
*/
struct nfs_server {
struct rpc_clnt * client; /* RPC client handle */
struct rpc_clnt * client_sys; /* 2nd handle for FSINFO */
struct rpc_clnt * client_acl; /* ACL RPC client handle */
struct nfs_rpc_ops * rpc_ops; /* NFS protocol vector */
struct nfs_iostats * io_stats; /* I/O statistics */
struct backing_dev_info backing_dev_info;
int flags; /* various flags */
unsigned int caps; /* server capabilities */
unsigned int rsize; /* read size */
unsigned int rpages; /* read size (in pages) */
unsigned int wsize; /* write size */
unsigned int wpages; /* write size (in pages) */
unsigned int wtmult; /* server disk block size */
unsigned int dtsize; /* readdir size */
unsigned int bsize; /* server block size */
unsigned int acregmin; /* attr cache timeouts */
unsigned int acregmax;
unsigned int acdirmin;
unsigned int acdirmax;
unsigned long retrans_timeo; /* retransmit timeout */
unsigned int retrans_count; /* number of retransmit tries */
unsigned int namelen;
char * hostname; /* remote hostname */
struct nfs_fh fh;
struct sockaddr_in addr;
unsigned long mount_time; /* when this fs was mounted */
#ifdef CONFIG_NFS_V4
/* Our own IP address, as a null-terminated string.
* This is used to generate the clientid, and the callback address.
*/
char ip_addr[16];
char * mnt_path;
struct nfs4_client * nfs4_state; /* all NFSv4 state starts here */
struct list_head nfs4_siblings; /* List of other nfs_server structs
* that share the same clientid
*/
u32 attr_bitmask[2];/* V4 bitmask representing the set
of attributes supported on this
filesystem */
u32 acl_bitmask; /* V4 bitmask representing the ACEs
that are supported on this
filesystem */
#endif
};
/* Server capabilities */
#define NFS_CAP_READDIRPLUS (1U << 0)
#define NFS_CAP_HARDLINKS (1U << 1)
#define NFS_CAP_SYMLINKS (1U << 2)
#define NFS_CAP_ACLS (1U << 3)
#define NFS_CAP_ATOMIC_OPEN (1U << 4)
#endif