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NFSv4.1: Move slot table and session struct definitions to nfs4session.h

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Clean up. Gather NFSv4.1 slot definitions in fs/nfs/nfs4session.h.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2012-11-26 14:20:49 -05:00
parent c34309a45e
commit 76e697ba7e
11 changed files with 108 additions and 92 deletions
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1
fs/nfs/blocklayout/blocklayout.c
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@ -40,6 +40,7 @@
#include <linux/pagevec.h>
#include "../pnfs.h"
#include "../nfs4session.h"
#include "../internal.h"
#include "blocklayout.h"

1
fs/nfs/callback_xdr.c
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@ -16,6 +16,7 @@
#include "nfs4_fs.h"
#include "callback.h"
#include "internal.h"
#include "nfs4session.h"
#define CB_OP_TAGLEN_MAXSZ (512)
#define CB_OP_HDR_RES_MAXSZ (2 + CB_OP_TAGLEN_MAXSZ)

21
fs/nfs/internal.h
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@ -18,27 +18,6 @@ struct nfs_string;
*/
#define NFS_MAX_READAHEAD (RPC_DEF_SLOT_TABLE - 1)
/*
* Determine if sessions are in use.
*/
static inline int nfs4_has_session(const struct nfs_client *clp)
{
#ifdef CONFIG_NFS_V4_1
if (clp->cl_session)
return 1;
#endif /* CONFIG_NFS_V4_1 */
return 0;
}
static inline int nfs4_has_persistent_session(const struct nfs_client *clp)
{
#ifdef CONFIG_NFS_V4_1
if (nfs4_has_session(clp))
return (clp->cl_session->flags & SESSION4_PERSIST);
#endif /* CONFIG_NFS_V4_1 */
return 0;
}
static inline void nfs_attr_check_mountpoint(struct super_block *parent, struct nfs_fattr *fattr)
{
if (!nfs_fsid_equal(&NFS_SB(parent)->fsid, &fattr->fsid))

12
fs/nfs/nfs4_fs.h
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@ -29,11 +29,6 @@ enum nfs4_client_state {
NFS4CLNT_BIND_CONN_TO_SESSION,
};
enum nfs4_session_state {
NFS4_SESSION_INITING,
NFS4_SESSION_DRAINING,
};
#define NFS4_RENEW_TIMEOUT 0x01
#define NFS4_RENEW_DELEGATION_CB 0x02
@ -327,13 +322,6 @@ int nfs41_discover_server_trunking(struct nfs_client *clp,
extern void nfs4_schedule_session_recovery(struct nfs4_session *, int);
extern void nfs41_server_notify_target_slotid_update(struct nfs_client *clp);
extern void nfs4_session_drain_complete(struct nfs4_session *session,
struct nfs4_slot_table *tbl);
static inline bool nfs4_session_draining(struct nfs4_session *session)
{
return !!test_bit(NFS4_SESSION_DRAINING, &session->session_state);
}
#else
static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err)
{

1
fs/nfs/nfs4filelayout.c
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@ -35,6 +35,7 @@
#include <linux/sunrpc/metrics.h>
#include "nfs4session.h"
#include "internal.h"
#include "delegation.h"
#include "nfs4filelayout.h"

101
fs/nfs/nfs4session.h
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@ -7,6 +7,68 @@
#ifndef __LINUX_FS_NFS_NFS4SESSION_H
#define __LINUX_FS_NFS_NFS4SESSION_H
/* maximum number of slots to use */
#define NFS4_DEF_SLOT_TABLE_SIZE (16U)
#define NFS4_MAX_SLOT_TABLE (256U)
#define NFS4_NO_SLOT ((u32)-1)
#if IS_ENABLED(CONFIG_NFS_V4)
/* Sessions slot seqid */
struct nfs4_slot {
struct nfs4_slot_table *table;
struct nfs4_slot *next;
unsigned long generation;
unsigned long renewal_time;
u32 slot_nr;
u32 seq_nr;
};
/* Sessions */
#define SLOT_TABLE_SZ DIV_ROUND_UP(NFS4_MAX_SLOT_TABLE, 8*sizeof(long))
struct nfs4_slot_table {
struct nfs4_session *session; /* Parent session */
struct nfs4_slot *slots; /* seqid per slot */
unsigned long used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */
spinlock_t slot_tbl_lock;
struct rpc_wait_queue slot_tbl_waitq; /* allocators may wait here */
u32 max_slots; /* # slots in table */
u32 max_slotid; /* Max allowed slotid value */
u32 highest_used_slotid; /* sent to server on each SEQ.
* op for dynamic resizing */
u32 target_highest_slotid; /* Server max_slot target */
u32 server_highest_slotid; /* Server highest slotid */
unsigned long generation; /* Generation counter for
target_highest_slotid */
struct completion complete;
};
/*
* Session related parameters
*/
struct nfs4_session {
struct nfs4_sessionid sess_id;
u32 flags;
unsigned long session_state;
u32 hash_alg;
u32 ssv_len;
/* The fore and back channel */
struct nfs4_channel_attrs fc_attrs;
struct nfs4_slot_table fc_slot_table;
struct nfs4_channel_attrs bc_attrs;
struct nfs4_slot_table bc_slot_table;
struct nfs_client *clp;
/* Create session arguments */
unsigned int fc_target_max_rqst_sz;
unsigned int fc_target_max_resp_sz;
};
enum nfs4_session_state {
NFS4_SESSION_INITING,
NFS4_SESSION_DRAINING,
};
#if defined(CONFIG_NFS_V4_1)
extern struct nfs4_slot *nfs4_alloc_slot(struct nfs4_slot_table *tbl);
extern void nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *slot);
@ -24,6 +86,31 @@ extern void nfs4_destroy_session(struct nfs4_session *session);
extern int nfs4_init_session(struct nfs_server *server);
extern int nfs4_init_ds_session(struct nfs_client *, unsigned long);
extern void nfs4_session_drain_complete(struct nfs4_session *session,
struct nfs4_slot_table *tbl);
static inline bool nfs4_session_draining(struct nfs4_session *session)
{
return !!test_bit(NFS4_SESSION_DRAINING, &session->session_state);
}
/*
* Determine if sessions are in use.
*/
static inline int nfs4_has_session(const struct nfs_client *clp)
{
if (clp->cl_session)
return 1;
return 0;
}
static inline int nfs4_has_persistent_session(const struct nfs_client *clp)
{
if (nfs4_has_session(clp))
return (clp->cl_session->flags & SESSION4_PERSIST);
return 0;
}
#else /* defined(CONFIG_NFS_V4_1) */
static inline int nfs4_init_session(struct nfs_server *server)
@ -31,5 +118,19 @@ static inline int nfs4_init_session(struct nfs_server *server)
return 0;
}
/*
* Determine if sessions are in use.
*/
static inline int nfs4_has_session(const struct nfs_client *clp)
{
return 0;
}
static inline int nfs4_has_persistent_session(const struct nfs_client *clp)
{
return 0;
}
#endif /* defined(CONFIG_NFS_V4_1) */
#endif /* IS_ENABLED(CONFIG_NFS_V4) */
#endif /* __LINUX_FS_NFS_NFS4SESSION_H */

1
fs/nfs/nfs4state.c
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@ -57,6 +57,7 @@
#include "callback.h"
#include "delegation.h"
#include "internal.h"
#include "nfs4session.h"
#include "pnfs.h"
#include "netns.h"

1
fs/nfs/nfs4xdr.c
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@ -56,6 +56,7 @@
#include "nfs4_fs.h"
#include "internal.h"
#include "nfs4session.h"
#include "pnfs.h"
#include "netns.h"

1
fs/nfs/super.c
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@ -64,6 +64,7 @@
#include "iostat.h"
#include "internal.h"
#include "fscache.h"
#include "nfs4session.h"
#include "pnfs.h"
#include "nfs.h"

49
include/linux/nfs_fs_sb.h
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@ -198,53 +198,4 @@ struct nfs_server {
#define NFS_CAP_POSIX_LOCK (1U << 14)
#define NFS_CAP_UIDGID_NOMAP (1U << 15)
/* maximum number of slots to use */
#define NFS4_DEF_SLOT_TABLE_SIZE (16U)
#define NFS4_MAX_SLOT_TABLE (256U)
#define NFS4_NO_SLOT ((u32)-1)
#if IS_ENABLED(CONFIG_NFS_V4)
/* Sessions */
#define SLOT_TABLE_SZ DIV_ROUND_UP(NFS4_MAX_SLOT_TABLE, 8*sizeof(long))
struct nfs4_slot_table {
struct nfs4_session *session; /* Parent session */
struct nfs4_slot *slots; /* seqid per slot */
unsigned long used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */
spinlock_t slot_tbl_lock;
struct rpc_wait_queue slot_tbl_waitq; /* allocators may wait here */
u32 max_slots; /* # slots in table */
u32 max_slotid; /* Max allowed slotid value */
u32 highest_used_slotid; /* sent to server on each SEQ.
* op for dynamic resizing */
u32 target_highest_slotid; /* Server max_slot target */
u32 server_highest_slotid; /* Server highest slotid */
unsigned long generation; /* Generation counter for
target_highest_slotid */
struct completion complete;
};
/*
* Session related parameters
*/
struct nfs4_session {
struct nfs4_sessionid sess_id;
u32 flags;
unsigned long session_state;
u32 hash_alg;
u32 ssv_len;
/* The fore and back channel */
struct nfs4_channel_attrs fc_attrs;
struct nfs4_slot_table fc_slot_table;
struct nfs4_channel_attrs bc_attrs;
struct nfs4_slot_table bc_slot_table;
struct nfs_client *clp;
/* Create session arguments */
unsigned int fc_target_max_rqst_sz;
unsigned int fc_target_max_resp_sz;
};
#endif /* CONFIG_NFS_V4 */
#endif

11
include/linux/nfs_xdr.h
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@ -185,16 +185,7 @@ struct nfs4_channel_attrs {
u32 max_reqs;
};
/* nfs41 sessions slot seqid */
struct nfs4_slot {
struct nfs4_slot_table *table;
struct nfs4_slot *next;
unsigned long generation;
unsigned long renewal_time;
u32 slot_nr;
u32 seq_nr;
};
struct nfs4_slot;
struct nfs4_sequence_args {
struct nfs4_slot *sa_slot;
u8 sa_cache_this;