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-rw-r--r--include/linux/nfs_fs.h241
1 files changed, 0 insertions, 241 deletions
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index dbac7f363e5d..fb33e7655cfa 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -15,7 +15,6 @@
15#include <linux/pagemap.h> 15#include <linux/pagemap.h>
16#include <linux/rwsem.h> 16#include <linux/rwsem.h>
17#include <linux/wait.h> 17#include <linux/wait.h>
18#include <linux/uio.h>
19 18
20#include <linux/nfs_fs_sb.h> 19#include <linux/nfs_fs_sb.h>
21 20
@@ -29,7 +28,6 @@
29#include <linux/nfs4.h> 28#include <linux/nfs4.h>
30#include <linux/nfs_xdr.h> 29#include <linux/nfs_xdr.h>
31#include <linux/rwsem.h> 30#include <linux/rwsem.h>
32#include <linux/workqueue.h>
33#include <linux/mempool.h> 31#include <linux/mempool.h>
34 32
35/* 33/*
@@ -44,13 +42,6 @@
44#define NFS_DEF_FILE_IO_BUFFER_SIZE 4096 42#define NFS_DEF_FILE_IO_BUFFER_SIZE 4096
45 43
46/* 44/*
47 * The upper limit on timeouts for the exponential backoff algorithm.
48 */
49#define NFS_WRITEBACK_DELAY (5*HZ)
50#define NFS_WRITEBACK_LOCKDELAY (60*HZ)
51#define NFS_COMMIT_DELAY (5*HZ)
52
53/*
54 * superblock magic number for NFS 45 * superblock magic number for NFS
55 */ 46 */
56#define NFS_SUPER_MAGIC 0x6969 47#define NFS_SUPER_MAGIC 0x6969
@@ -60,9 +51,6 @@
60 */ 51 */
61#define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) 52#define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS)
62 53
63#define NFS_RW_SYNC 0x0001 /* O_SYNC handling */
64#define NFS_RW_SWAP 0x0002 /* This is a swap request */
65
66/* 54/*
67 * When flushing a cluster of dirty pages, there can be different 55 * When flushing a cluster of dirty pages, there can be different
68 * strategies: 56 * strategies:
@@ -434,11 +422,6 @@ static inline void nfs_writedata_free(struct nfs_write_data *p)
434 mempool_free(p, nfs_wdata_mempool); 422 mempool_free(p, nfs_wdata_mempool);
435} 423}
436 424
437/* Hack for future NFS swap support */
438#ifndef IS_SWAPFILE
439# define IS_SWAPFILE(inode) (0)
440#endif
441
442/* 425/*
443 * linux/fs/nfs/read.c 426 * linux/fs/nfs/read.c
444 */ 427 */
@@ -515,230 +498,6 @@ extern void * nfs_root_data(void);
515 498
516#define NFS_JUKEBOX_RETRY_TIME (5 * HZ) 499#define NFS_JUKEBOX_RETRY_TIME (5 * HZ)
517 500
518#ifdef CONFIG_NFS_V4
519
520struct idmap;
521
522/*
523 * In a seqid-mutating op, this macro controls which error return
524 * values trigger incrementation of the seqid.
525 *
526 * from rfc 3010:
527 * The client MUST monotonically increment the sequence number for the
528 * CLOSE, LOCK, LOCKU, OPEN, OPEN_CONFIRM, and OPEN_DOWNGRADE
529 * operations. This is true even in the event that the previous
530 * operation that used the sequence number received an error. The only
531 * exception to this rule is if the previous operation received one of
532 * the following errors: NFSERR_STALE_CLIENTID, NFSERR_STALE_STATEID,
533 * NFSERR_BAD_STATEID, NFSERR_BAD_SEQID, NFSERR_BADXDR,
534 * NFSERR_RESOURCE, NFSERR_NOFILEHANDLE.
535 *
536 */
537#define seqid_mutating_err(err) \
538(((err) != NFSERR_STALE_CLIENTID) && \
539 ((err) != NFSERR_STALE_STATEID) && \
540 ((err) != NFSERR_BAD_STATEID) && \
541 ((err) != NFSERR_BAD_SEQID) && \
542 ((err) != NFSERR_BAD_XDR) && \
543 ((err) != NFSERR_RESOURCE) && \
544 ((err) != NFSERR_NOFILEHANDLE))
545
546enum nfs4_client_state {
547 NFS4CLNT_OK = 0,
548};
549
550/*
551 * The nfs4_client identifies our client state to the server.
552 */
553struct nfs4_client {
554 struct list_head cl_servers; /* Global list of servers */
555 struct in_addr cl_addr; /* Server identifier */
556 u64 cl_clientid; /* constant */
557 nfs4_verifier cl_confirm;
558 unsigned long cl_state;
559
560 u32 cl_lockowner_id;
561
562 /*
563 * The following rwsem ensures exclusive access to the server
564 * while we recover the state following a lease expiration.
565 */
566 struct rw_semaphore cl_sem;
567
568 struct list_head cl_delegations;
569 struct list_head cl_state_owners;
570 struct list_head cl_unused;
571 int cl_nunused;
572 spinlock_t cl_lock;
573 atomic_t cl_count;
574
575 struct rpc_clnt * cl_rpcclient;
576 struct rpc_cred * cl_cred;
577
578 struct list_head cl_superblocks; /* List of nfs_server structs */
579
580 unsigned long cl_lease_time;
581 unsigned long cl_last_renewal;
582 struct work_struct cl_renewd;
583 struct work_struct cl_recoverd;
584
585 wait_queue_head_t cl_waitq;
586 struct rpc_wait_queue cl_rpcwaitq;
587
588 /* used for the setclientid verifier */
589 struct timespec cl_boot_time;
590
591 /* idmapper */
592 struct idmap * cl_idmap;
593
594 /* Our own IP address, as a null-terminated string.
595 * This is used to generate the clientid, and the callback address.
596 */
597 char cl_ipaddr[16];
598 unsigned char cl_id_uniquifier;
599};
600
601/*
602 * NFS4 state_owners and lock_owners are simply labels for ordered
603 * sequences of RPC calls. Their sole purpose is to provide once-only
604 * semantics by allowing the server to identify replayed requests.
605 *
606 * The ->so_sema is held during all state_owner seqid-mutating operations:
607 * OPEN, OPEN_DOWNGRADE, and CLOSE. Its purpose is to properly serialize
608 * so_seqid.
609 */
610struct nfs4_state_owner {
611 struct list_head so_list; /* per-clientid list of state_owners */
612 struct nfs4_client *so_client;
613 u32 so_id; /* 32-bit identifier, unique */
614 struct semaphore so_sema;
615 u32 so_seqid; /* protected by so_sema */
616 atomic_t so_count;
617
618 struct rpc_cred *so_cred; /* Associated cred */
619 struct list_head so_states;
620 struct list_head so_delegations;
621};
622
623/*
624 * struct nfs4_state maintains the client-side state for a given
625 * (state_owner,inode) tuple (OPEN) or state_owner (LOCK).
626 *
627 * OPEN:
628 * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server,
629 * we need to know how many files are open for reading or writing on a
630 * given inode. This information too is stored here.
631 *
632 * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN)
633 */
634
635struct nfs4_lock_state {
636 struct list_head ls_locks; /* Other lock stateids */
637 fl_owner_t ls_owner; /* POSIX lock owner */
638#define NFS_LOCK_INITIALIZED 1
639 int ls_flags;
640 u32 ls_seqid;
641 u32 ls_id;
642 nfs4_stateid ls_stateid;
643 atomic_t ls_count;
644};
645
646/* bits for nfs4_state->flags */
647enum {
648 LK_STATE_IN_USE,
649 NFS_DELEGATED_STATE,
650};
651
652struct nfs4_state {
653 struct list_head open_states; /* List of states for the same state_owner */
654 struct list_head inode_states; /* List of states for the same inode */
655 struct list_head lock_states; /* List of subservient lock stateids */
656
657 struct nfs4_state_owner *owner; /* Pointer to the open owner */
658 struct inode *inode; /* Pointer to the inode */
659
660 unsigned long flags; /* Do we hold any locks? */
661 struct semaphore lock_sema; /* Serializes file locking operations */
662 rwlock_t state_lock; /* Protects the lock_states list */
663
664 nfs4_stateid stateid;
665
666 unsigned int nreaders;
667 unsigned int nwriters;
668 int state; /* State on the server (R,W, or RW) */
669 atomic_t count;
670};
671
672
673struct nfs4_exception {
674 long timeout;
675 int retry;
676};
677
678struct nfs4_state_recovery_ops {
679 int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *);
680 int (*recover_lock)(struct nfs4_state *, struct file_lock *);
681};
682
683extern struct dentry_operations nfs4_dentry_operations;
684extern struct inode_operations nfs4_dir_inode_operations;
685
686/* nfs4proc.c */
687extern int nfs4_map_errors(int err);
688extern int nfs4_proc_setclientid(struct nfs4_client *, u32, unsigned short);
689extern int nfs4_proc_setclientid_confirm(struct nfs4_client *);
690extern int nfs4_proc_async_renew(struct nfs4_client *);
691extern int nfs4_proc_renew(struct nfs4_client *);
692extern int nfs4_do_close(struct inode *inode, struct nfs4_state *state, mode_t mode);
693extern struct inode *nfs4_atomic_open(struct inode *, struct dentry *, struct nameidata *);
694extern int nfs4_open_revalidate(struct inode *, struct dentry *, int);
695
696extern struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops;
697extern struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops;
698
699/* nfs4renewd.c */
700extern void nfs4_schedule_state_renewal(struct nfs4_client *);
701extern void nfs4_renewd_prepare_shutdown(struct nfs_server *);
702extern void nfs4_kill_renewd(struct nfs4_client *);
703
704/* nfs4state.c */
705extern void init_nfsv4_state(struct nfs_server *);
706extern void destroy_nfsv4_state(struct nfs_server *);
707extern struct nfs4_client *nfs4_get_client(struct in_addr *);
708extern void nfs4_put_client(struct nfs4_client *clp);
709extern int nfs4_init_client(struct nfs4_client *clp);
710extern struct nfs4_client *nfs4_find_client(struct in_addr *);
711extern u32 nfs4_alloc_lockowner_id(struct nfs4_client *);
712
713extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *);
714extern void nfs4_put_state_owner(struct nfs4_state_owner *);
715extern void nfs4_drop_state_owner(struct nfs4_state_owner *);
716extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *);
717extern void nfs4_put_open_state(struct nfs4_state *);
718extern void nfs4_close_state(struct nfs4_state *, mode_t);
719extern struct nfs4_state *nfs4_find_state(struct inode *, struct rpc_cred *, mode_t mode);
720extern void nfs4_increment_seqid(int status, struct nfs4_state_owner *sp);
721extern void nfs4_schedule_state_recovery(struct nfs4_client *);
722extern struct nfs4_lock_state *nfs4_find_lock_state(struct nfs4_state *state, fl_owner_t);
723extern struct nfs4_lock_state *nfs4_get_lock_state(struct nfs4_state *state, fl_owner_t);
724extern void nfs4_put_lock_state(struct nfs4_lock_state *state);
725extern void nfs4_increment_lock_seqid(int status, struct nfs4_lock_state *ls);
726extern void nfs4_notify_setlk(struct nfs4_state *, struct file_lock *, struct nfs4_lock_state *);
727extern void nfs4_notify_unlck(struct nfs4_state *, struct file_lock *, struct nfs4_lock_state *);
728extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t);
729
730
731
732struct nfs4_mount_data;
733#else
734#define init_nfsv4_state(server) do { } while (0)
735#define destroy_nfsv4_state(server) do { } while (0)
736#define nfs4_put_state_owner(inode, owner) do { } while (0)
737#define nfs4_put_open_state(state) do { } while (0)
738#define nfs4_close_state(a, b) do { } while (0)
739#define nfs4_renewd_prepare_shutdown(server) do { } while (0)
740#endif
741
742#endif /* __KERNEL__ */ 501#endif /* __KERNEL__ */
743 502
744/* 503/*