| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| J. Bruce Fields | 584 | 27.74% | 70 | 32.11% |
| Neil Brown | 376 | 17.86% | 29 | 13.30% |
| Jeff Layton | 250 | 11.88% | 29 | 13.30% |
| Christoph Hellwig | 208 | 9.88% | 12 | 5.50% |
| Andy Adamson | 155 | 7.36% | 11 | 5.05% |
| Olga Kornievskaia | 140 | 6.65% | 4 | 1.83% |
| Dai Ngo | 72 | 3.42% | 4 | 1.83% |
| Trond Myklebust | 61 | 2.90% | 11 | 5.05% |
| Stanislav Kinsbursky | 46 | 2.19% | 6 | 2.75% |
| Sachin Bhamare | 36 | 1.71% | 1 | 0.46% |
| Benny Halevy | 28 | 1.33% | 6 | 2.75% |
| Marc Eshel | 24 | 1.14% | 2 | 0.92% |
| Scott Mayhew | 19 | 0.90% | 2 | 0.92% |
| Anna Schumaker | 17 | 0.81% | 3 | 1.38% |
| Andrew Morton | 16 | 0.76% | 4 | 1.83% |
| Ricardo Labiaga | 11 | 0.52% | 1 | 0.46% |
| Elena Reshetova | 7 | 0.33% | 3 | 1.38% |
| Alexandros Batsakis | 6 | 0.29% | 1 | 0.46% |
| Arnd Bergmann | 6 | 0.29% | 2 | 0.92% |
| Linus Torvalds (pre-git) | 6 | 0.29% | 3 | 1.38% |
| Chuck Lever | 6 | 0.29% | 2 | 0.92% |
| Vasily Averin | 4 | 0.19% | 1 | 0.46% |
| Kinglong Mee | 4 | 0.19% | 2 | 0.92% |
| Andrew Elble | 4 | 0.19% | 1 | 0.46% |
| Takuma Umeya | 4 | 0.19% | 1 | 0.46% |
| Al Viro | 3 | 0.14% | 1 | 0.46% |
| Meelap Shah | 3 | 0.14% | 1 | 0.46% |
| Eric W. Biedermann | 2 | 0.10% | 1 | 0.46% |
| S. Wendy Cheng | 2 | 0.10% | 1 | 0.46% |
| Oleg Drokin | 2 | 0.10% | 1 | 0.46% |
| Julia Lawall | 2 | 0.10% | 1 | 0.46% |
| Boaz Harrosh | 1 | 0.05% | 1 | 0.46% |
| Total | 2105 | 218 |
/* * Copyright (c) 2001 The Regents of the University of Michigan. * All rights reserved. * * Kendrick Smith <kmsmith@umich.edu> * Andy Adamson <andros@umich.edu> * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef _NFSD4_STATE_H #define _NFSD4_STATE_H #include <linux/idr.h> #include <linux/refcount.h> #include <linux/sunrpc/svc_xprt.h> #include "nfsfh.h" #include "nfsd.h" typedef struct { u32 cl_boot; u32 cl_id; } clientid_t; typedef struct { clientid_t so_clid; u32 so_id; } stateid_opaque_t; typedef struct { u32 si_generation; stateid_opaque_t si_opaque; } stateid_t; typedef struct { stateid_t cs_stid; #define NFS4_COPY_STID 1 #define NFS4_COPYNOTIFY_STID 2 unsigned char cs_type; refcount_t cs_count; } copy_stateid_t; struct nfsd4_callback { struct nfs4_client *cb_clp; struct rpc_message cb_msg; const struct nfsd4_callback_ops *cb_ops; struct work_struct cb_work; int cb_seq_status; int cb_status; bool cb_need_restart; bool cb_holds_slot; }; struct nfsd4_callback_ops { void (*prepare)(struct nfsd4_callback *); int (*done)(struct nfsd4_callback *, struct rpc_task *); void (*release)(struct nfsd4_callback *); }; /* * A core object that represents a "common" stateid. These are generally * embedded within the different (more specific) stateid objects and contain * fields that are of general use to any stateid. */ struct nfs4_stid { refcount_t sc_count; #define NFS4_OPEN_STID 1 #define NFS4_LOCK_STID 2 #define NFS4_DELEG_STID 4 /* For an open stateid kept around *only* to process close replays: */ #define NFS4_CLOSED_STID 8 /* For a deleg stateid kept around only to process free_stateid's: */ #define NFS4_REVOKED_DELEG_STID 16 #define NFS4_CLOSED_DELEG_STID 32 #define NFS4_LAYOUT_STID 64 struct list_head sc_cp_list; unsigned char sc_type; stateid_t sc_stateid; spinlock_t sc_lock; struct nfs4_client *sc_client; struct nfs4_file *sc_file; void (*sc_free)(struct nfs4_stid *); }; /* Keep a list of stateids issued by the COPY_NOTIFY, associate it with the * parent OPEN/LOCK/DELEG stateid. */ struct nfs4_cpntf_state { copy_stateid_t cp_stateid; struct list_head cp_list; /* per parent nfs4_stid */ stateid_t cp_p_stateid; /* copy of parent's stateid */ clientid_t cp_p_clid; /* copy of parent's clid */ time64_t cpntf_time; /* last time stateid used */ }; /* * Represents a delegation stateid. The nfs4_client holds references to these * and they are put when it is being destroyed or when the delegation is * returned by the client: * * o 1 reference as long as a delegation is still in force (taken when it's * alloc'd, put when it's returned or revoked) * * o 1 reference as long as a recall rpc is in progress (taken when the lease * is broken, put when the rpc exits) * * o 1 more ephemeral reference for each nfsd thread currently doing something * with that delegation without holding the cl_lock * * If the server attempts to recall a delegation and the client doesn't do so * before a timeout, the server may also revoke the delegation. In that case, * the object will either be destroyed (v4.0) or moved to a per-client list of * revoked delegations (v4.1+). * * This object is a superset of the nfs4_stid. */ struct nfs4_delegation { struct nfs4_stid dl_stid; /* must be first field */ struct list_head dl_perfile; struct list_head dl_perclnt; struct list_head dl_recall_lru; /* delegation recalled */ struct nfs4_clnt_odstate *dl_clnt_odstate; u32 dl_type; time64_t dl_time; /* For recall: */ int dl_retries; struct nfsd4_callback dl_recall; bool dl_recalled; }; #define cb_to_delegation(cb) \ container_of(cb, struct nfs4_delegation, dl_recall) /* client delegation callback info */ struct nfs4_cb_conn { /* SETCLIENTID info */ struct sockaddr_storage cb_addr; struct sockaddr_storage cb_saddr; size_t cb_addrlen; u32 cb_prog; /* used only in 4.0 case; per-session otherwise */ u32 cb_ident; /* minorversion 0 only */ struct svc_xprt *cb_xprt; /* minorversion 1 only */ }; static inline struct nfs4_delegation *delegstateid(struct nfs4_stid *s) { return container_of(s, struct nfs4_delegation, dl_stid); } /* Maximum number of slots per session. 160 is useful for long haul TCP */ #define NFSD_MAX_SLOTS_PER_SESSION 160 /* Maximum session per slot cache size */ #define NFSD_SLOT_CACHE_SIZE 2048 /* Maximum number of NFSD_SLOT_CACHE_SIZE slots per session */ #define NFSD_CACHE_SIZE_SLOTS_PER_SESSION 32 #define NFSD_MAX_MEM_PER_SESSION \ (NFSD_CACHE_SIZE_SLOTS_PER_SESSION * NFSD_SLOT_CACHE_SIZE) struct nfsd4_slot { u32 sl_seqid; __be32 sl_status; struct svc_cred sl_cred; u32 sl_datalen; u16 sl_opcnt; #define NFSD4_SLOT_INUSE (1 << 0) #define NFSD4_SLOT_CACHETHIS (1 << 1) #define NFSD4_SLOT_INITIALIZED (1 << 2) #define NFSD4_SLOT_CACHED (1 << 3) u8 sl_flags; char sl_data[]; }; struct nfsd4_channel_attrs { u32 headerpadsz; u32 maxreq_sz; u32 maxresp_sz; u32 maxresp_cached; u32 maxops; u32 maxreqs; u32 nr_rdma_attrs; u32 rdma_attrs; }; struct nfsd4_cb_sec { u32 flavor; /* (u32)(-1) used to mean "no valid flavor" */ kuid_t uid; kgid_t gid; }; struct nfsd4_create_session { clientid_t clientid; struct nfs4_sessionid sessionid; u32 seqid; u32 flags; struct nfsd4_channel_attrs fore_channel; struct nfsd4_channel_attrs back_channel; u32 callback_prog; struct nfsd4_cb_sec cb_sec; }; struct nfsd4_backchannel_ctl { u32 bc_cb_program; struct nfsd4_cb_sec bc_cb_sec; }; struct nfsd4_bind_conn_to_session { struct nfs4_sessionid sessionid; u32 dir; }; /* The single slot clientid cache structure */ struct nfsd4_clid_slot { u32 sl_seqid; __be32 sl_status; struct nfsd4_create_session sl_cr_ses; }; struct nfsd4_conn { struct list_head cn_persession; struct svc_xprt *cn_xprt; struct svc_xpt_user cn_xpt_user; struct nfsd4_session *cn_session; /* CDFC4_FORE, CDFC4_BACK: */ unsigned char cn_flags; }; /* * Representation of a v4.1+ session. These are refcounted in a similar fashion * to the nfs4_client. References are only taken when the server is actively * working on the object (primarily during the processing of compounds). */ struct nfsd4_session { atomic_t se_ref; struct list_head se_hash; /* hash by sessionid */ struct list_head se_perclnt; /* See SESSION4_PERSIST, etc. for standard flags; this is internal-only: */ #define NFS4_SESSION_DEAD 0x010 u32 se_flags; struct nfs4_client *se_client; struct nfs4_sessionid se_sessionid; struct nfsd4_channel_attrs se_fchannel; struct nfsd4_channel_attrs se_bchannel; struct nfsd4_cb_sec se_cb_sec; struct list_head se_conns; u32 se_cb_prog; u32 se_cb_seq_nr; struct nfsd4_slot *se_slots[]; /* forward channel slots */ }; /* formatted contents of nfs4_sessionid */ struct nfsd4_sessionid { clientid_t clientid; u32 sequence; u32 reserved; }; #define HEXDIR_LEN 33 /* hex version of 16 byte md5 of cl_name plus '\0' */ /* * State Meaning Where set * -------------------------------------------------------------------------- * | NFSD4_ACTIVE | Confirmed, active | Default | * |------------------- ----------------------------------------------------| * | NFSD4_COURTESY | Courtesy state. | nfs4_get_client_reaplist | * | | Lease/lock/share | | * | | reservation conflict | | * | | can cause Courtesy | | * | | client to be expired | | * |------------------------------------------------------------------------| * | NFSD4_EXPIRABLE | Courtesy client to be| nfs4_laundromat | * | | expired by Laundromat| try_to_expire_client | * | | due to conflict | | * |------------------------------------------------------------------------| */ enum { NFSD4_ACTIVE = 0, NFSD4_COURTESY, NFSD4_EXPIRABLE, }; /* * struct nfs4_client - one per client. Clientids live here. * * The initial object created by an NFS client using SETCLIENTID (for NFSv4.0) * or EXCHANGE_ID (for NFSv4.1+). These objects are refcounted and timestamped. * Each nfsd_net_ns object contains a set of these and they are tracked via * short and long form clientid. They are hashed and searched for under the * per-nfsd_net client_lock spinlock. * * References to it are only held during the processing of compounds, and in * certain other operations. In their "resting state" they have a refcount of * 0. If they are not renewed within a lease period, they become eligible for * destruction by the laundromat. * * These objects can also be destroyed prematurely by the fault injection code, * or if the client sends certain forms of SETCLIENTID or EXCHANGE_ID updates. * Care is taken *not* to do this however when the objects have an elevated * refcount. * * o Each nfs4_client is hashed by clientid * * o Each nfs4_clients is also hashed by name (the opaque quantity initially * sent by the client to identify itself). * * o cl_perclient list is used to ensure no dangling stateowner references * when we expire the nfs4_client */ struct nfs4_client { struct list_head cl_idhash; /* hash by cl_clientid.id */ struct rb_node cl_namenode; /* link into by-name trees */ struct list_head *cl_ownerstr_hashtbl; struct list_head cl_openowners; struct idr cl_stateids; /* stateid lookup */ struct list_head cl_delegations; struct list_head cl_revoked; /* unacknowledged, revoked 4.1 state */ struct list_head cl_lru; /* tail queue */ #ifdef CONFIG_NFSD_PNFS struct list_head cl_lo_states; /* outstanding layout states */ #endif struct xdr_netobj cl_name; /* id generated by client */ nfs4_verifier cl_verifier; /* generated by client */ time64_t cl_time; /* time of last lease renewal */ struct sockaddr_storage cl_addr; /* client ipaddress */ bool cl_mach_cred; /* SP4_MACH_CRED in force */ struct svc_cred cl_cred; /* setclientid principal */ clientid_t cl_clientid; /* generated by server */ nfs4_verifier cl_confirm; /* generated by server */ u32 cl_minorversion; /* NFSv4.1 client implementation id: */ struct xdr_netobj cl_nii_domain; struct xdr_netobj cl_nii_name; struct timespec64 cl_nii_time; /* for v4.0 and v4.1 callbacks: */ struct nfs4_cb_conn cl_cb_conn; #define NFSD4_CLIENT_CB_UPDATE (0) #define NFSD4_CLIENT_CB_KILL (1) #define NFSD4_CLIENT_STABLE (2) /* client on stable storage */ #define NFSD4_CLIENT_RECLAIM_COMPLETE (3) /* reclaim_complete done */ #define NFSD4_CLIENT_CONFIRMED (4) /* client is confirmed */ #define NFSD4_CLIENT_UPCALL_LOCK (5) /* upcall serialization */ #define NFSD4_CLIENT_CB_FLAG_MASK (1 << NFSD4_CLIENT_CB_UPDATE | \ 1 << NFSD4_CLIENT_CB_KILL) #define NFSD4_CLIENT_CB_RECALL_ANY (6) unsigned long cl_flags; const struct cred *cl_cb_cred; struct rpc_clnt *cl_cb_client; u32 cl_cb_ident; #define NFSD4_CB_UP 0 #define NFSD4_CB_UNKNOWN 1 #define NFSD4_CB_DOWN 2 #define NFSD4_CB_FAULT 3 int cl_cb_state; struct nfsd4_callback cl_cb_null; struct nfsd4_session *cl_cb_session; /* for all client information that callback code might need: */ spinlock_t cl_lock; /* for nfs41 */ struct list_head cl_sessions; struct nfsd4_clid_slot cl_cs_slot; /* create_session slot */ u32 cl_exchange_flags; /* number of rpc's in progress over an associated session: */ atomic_t cl_rpc_users; struct nfsdfs_client cl_nfsdfs; struct nfs4_op_map cl_spo_must_allow; /* debugging info directory under nfsd/clients/ : */ struct dentry *cl_nfsd_dentry; /* 'info' file within that directory. Ref is not counted, * but will remain valid iff cl_nfsd_dentry != NULL */ struct dentry *cl_nfsd_info_dentry; /* for nfs41 callbacks */ /* We currently support a single back channel with a single slot */ unsigned long cl_cb_slot_busy; struct rpc_wait_queue cl_cb_waitq; /* backchannel callers may */ /* wait here for slots */ struct net *net; struct list_head async_copies; /* list of async copies */ spinlock_t async_lock; /* lock for async copies */ atomic_t cl_cb_inflight; /* Outstanding callbacks */ unsigned int cl_state; atomic_t cl_delegs_in_recall; struct nfsd4_cb_recall_any *cl_ra; time64_t cl_ra_time; struct list_head cl_ra_cblist; }; /* struct nfs4_client_reset * one per old client. Populates reset_str_hashtbl. Filled from conf_id_hashtbl * upon lease reset, or from upcall to state_daemon (to read in state * from non-volitile storage) upon reboot. */ struct nfs4_client_reclaim { struct list_head cr_strhash; /* hash by cr_name */ struct nfs4_client *cr_clp; /* pointer to associated clp */ struct xdr_netobj cr_name; /* recovery dir name */ struct xdr_netobj cr_princhash; }; /* A reasonable value for REPLAY_ISIZE was estimated as follows: * The OPEN response, typically the largest, requires * 4(status) + 8(stateid) + 20(changeinfo) + 4(rflags) + 8(verifier) + * 4(deleg. type) + 8(deleg. stateid) + 4(deleg. recall flag) + * 20(deleg. space limit) + ~32(deleg. ace) = 112 bytes */ #define NFSD4_REPLAY_ISIZE 112 /* * Replay buffer, where the result of the last seqid-mutating operation * is cached. */ struct nfs4_replay { __be32 rp_status; unsigned int rp_buflen; char *rp_buf; struct knfsd_fh rp_openfh; struct mutex rp_mutex; char rp_ibuf[NFSD4_REPLAY_ISIZE]; }; struct nfs4_stateowner; struct nfs4_stateowner_operations { void (*so_unhash)(struct nfs4_stateowner *); void (*so_free)(struct nfs4_stateowner *); }; /* * A core object that represents either an open or lock owner. The object and * lock owner objects have one of these embedded within them. Refcounts and * other fields common to both owner types are contained within these * structures. */ struct nfs4_stateowner { struct list_head so_strhash; struct list_head so_stateids; struct nfs4_client *so_client; const struct nfs4_stateowner_operations *so_ops; /* after increment in nfsd4_bump_seqid, represents the next * sequence id expected from the client: */ atomic_t so_count; u32 so_seqid; struct xdr_netobj so_owner; /* open owner name */ struct nfs4_replay so_replay; bool so_is_open_owner; }; /* * When a file is opened, the client provides an open state owner opaque string * that indicates the "owner" of that open. These objects are refcounted. * References to it are held by each open state associated with it. This object * is a superset of the nfs4_stateowner struct. */ struct nfs4_openowner { struct nfs4_stateowner oo_owner; /* must be first field */ struct list_head oo_perclient; /* * We keep around openowners a little while after last close, * which saves clients from having to confirm, and allows us to * handle close replays if they come soon enough. The close_lru * is a list of such openowners, to be reaped by the laundromat * thread eventually if they remain unused: */ struct list_head oo_close_lru; struct nfs4_ol_stateid *oo_last_closed_stid; time64_t oo_time; /* time of placement on so_close_lru */ #define NFS4_OO_CONFIRMED 1 unsigned char oo_flags; }; /* * Represents a generic "lockowner". Similar to an openowner. References to it * are held by the lock stateids that are created on its behalf. This object is * a superset of the nfs4_stateowner struct. */ struct nfs4_lockowner { struct nfs4_stateowner lo_owner; /* must be first element */ struct list_head lo_blocked; /* blocked file_locks */ }; static inline struct nfs4_openowner * openowner(struct nfs4_stateowner *so) { return container_of(so, struct nfs4_openowner, oo_owner); } static inline struct nfs4_lockowner * lockowner(struct nfs4_stateowner *so) { return container_of(so, struct nfs4_lockowner, lo_owner); } /* * Per-client state indicating no. of opens and outstanding delegations * on a file from a particular client.'od' stands for 'open & delegation' */ struct nfs4_clnt_odstate { struct nfs4_client *co_client; struct nfs4_file *co_file; struct list_head co_perfile; refcount_t co_odcount; }; /* * nfs4_file: a file opened by some number of (open) nfs4_stateowners. * * These objects are global. nfsd keeps one instance of a nfs4_file per * filehandle (though it may keep multiple file descriptors for each). Each * inode can have multiple filehandles associated with it, so there is * (potentially) a many to one relationship between this struct and struct * inode. */ struct nfs4_file { refcount_t fi_ref; struct inode * fi_inode; bool fi_aliased; spinlock_t fi_lock; struct rhlist_head fi_rlist; struct list_head fi_stateids; union { struct list_head fi_delegations; struct rcu_head fi_rcu; }; struct list_head fi_clnt_odstate; /* One each for O_RDONLY, O_WRONLY, O_RDWR: */ struct nfsd_file *fi_fds[3]; /* * Each open or lock stateid contributes 0-4 to the counts * below depending on which bits are set in st_access_bitmap: * 1 to fi_access[O_RDONLY] if NFS4_SHARE_ACCES_READ is set * + 1 to fi_access[O_WRONLY] if NFS4_SHARE_ACCESS_WRITE is set * + 1 to both of the above if NFS4_SHARE_ACCESS_BOTH is set. */ atomic_t fi_access[2]; u32 fi_share_deny; struct nfsd_file *fi_deleg_file; int fi_delegees; struct knfsd_fh fi_fhandle; bool fi_had_conflict; #ifdef CONFIG_NFSD_PNFS struct list_head fi_lo_states; atomic_t fi_lo_recalls; #endif }; /* * A generic struct representing either a open or lock stateid. The nfs4_client * holds a reference to each of these objects, and they in turn hold a * reference to their respective stateowners. The client's reference is * released in response to a close or unlock (depending on whether it's an open * or lock stateid) or when the client is being destroyed. * * In the case of v4.0 open stateids, these objects are preserved for a little * while after close in order to handle CLOSE replays. Those are eventually * reclaimed via a LRU scheme by the laundromat. * * This object is a superset of the nfs4_stid. "ol" stands for "Open or Lock". * Better suggestions welcome. */ struct nfs4_ol_stateid { struct nfs4_stid st_stid; struct list_head st_perfile; struct list_head st_perstateowner; struct list_head st_locks; struct nfs4_stateowner *st_stateowner; struct nfs4_clnt_odstate *st_clnt_odstate; /* * These bitmasks use 3 separate bits for READ, ALLOW, and BOTH; see the * comment above bmap_to_share_mode() for explanation: */ unsigned char st_access_bmap; unsigned char st_deny_bmap; struct nfs4_ol_stateid *st_openstp; struct mutex st_mutex; }; static inline struct nfs4_ol_stateid *openlockstateid(struct nfs4_stid *s) { return container_of(s, struct nfs4_ol_stateid, st_stid); } struct nfs4_layout_stateid { struct nfs4_stid ls_stid; struct list_head ls_perclnt; struct list_head ls_perfile; spinlock_t ls_lock; struct list_head ls_layouts; u32 ls_layout_type; struct nfsd_file *ls_file; struct nfsd4_callback ls_recall; stateid_t ls_recall_sid; bool ls_recalled; struct mutex ls_mutex; }; static inline struct nfs4_layout_stateid *layoutstateid(struct nfs4_stid *s) { return container_of(s, struct nfs4_layout_stateid, ls_stid); } /* flags for preprocess_seqid_op() */ #define RD_STATE 0x00000010 #define WR_STATE 0x00000020 enum nfsd4_cb_op { NFSPROC4_CLNT_CB_NULL = 0, NFSPROC4_CLNT_CB_RECALL, NFSPROC4_CLNT_CB_LAYOUT, NFSPROC4_CLNT_CB_OFFLOAD, NFSPROC4_CLNT_CB_SEQUENCE, NFSPROC4_CLNT_CB_NOTIFY_LOCK, NFSPROC4_CLNT_CB_RECALL_ANY, }; /* Returns true iff a is later than b: */ static inline bool nfsd4_stateid_generation_after(stateid_t *a, stateid_t *b) { return (s32)(a->si_generation - b->si_generation) > 0; } /* * When a client tries to get a lock on a file, we set one of these objects * on the blocking lock. When the lock becomes free, we can then issue a * CB_NOTIFY_LOCK to the server. */ struct nfsd4_blocked_lock { struct list_head nbl_list; struct list_head nbl_lru; time64_t nbl_time; struct file_lock nbl_lock; struct knfsd_fh nbl_fh; struct nfsd4_callback nbl_cb; struct kref nbl_kref; }; struct nfsd4_compound_state; struct nfsd_net; struct nfsd4_copy; extern __be32 nfs4_preprocess_stateid_op(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct svc_fh *fhp, stateid_t *stateid, int flags, struct nfsd_file **filp, struct nfs4_stid **cstid); __be32 nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate, stateid_t *stateid, unsigned char typemask, struct nfs4_stid **s, struct nfsd_net *nn); struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *slab, void (*sc_free)(struct nfs4_stid *)); int nfs4_init_copy_state(struct nfsd_net *nn, struct nfsd4_copy *copy); void nfs4_free_copy_state(struct nfsd4_copy *copy); struct nfs4_cpntf_state *nfs4_alloc_init_cpntf_state(struct nfsd_net *nn, struct nfs4_stid *p_stid); void nfs4_unhash_stid(struct nfs4_stid *s); void nfs4_put_stid(struct nfs4_stid *s); void nfs4_inc_and_copy_stateid(stateid_t *dst, struct nfs4_stid *stid); void nfs4_remove_reclaim_record(struct nfs4_client_reclaim *, struct nfsd_net *); extern void nfs4_release_reclaim(struct nfsd_net *); extern struct nfs4_client_reclaim *nfsd4_find_reclaim_client(struct xdr_netobj name, struct nfsd_net *nn); extern __be32 nfs4_check_open_reclaim(struct nfs4_client *); extern void nfsd4_probe_callback(struct nfs4_client *clp); extern void nfsd4_probe_callback_sync(struct nfs4_client *clp); extern void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *); extern void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp, const struct nfsd4_callback_ops *ops, enum nfsd4_cb_op op); extern bool nfsd4_run_cb(struct nfsd4_callback *cb); extern int nfsd4_create_callback_queue(void); extern void nfsd4_destroy_callback_queue(void); extern void nfsd4_shutdown_callback(struct nfs4_client *); extern void nfsd4_shutdown_copy(struct nfs4_client *clp); extern struct nfs4_client_reclaim *nfs4_client_to_reclaim(struct xdr_netobj name, struct xdr_netobj princhash, struct nfsd_net *nn); extern bool nfs4_has_reclaimed_state(struct xdr_netobj name, struct nfsd_net *nn); void put_nfs4_file(struct nfs4_file *fi); extern void nfs4_put_cpntf_state(struct nfsd_net *nn, struct nfs4_cpntf_state *cps); extern __be32 manage_cpntf_state(struct nfsd_net *nn, stateid_t *st, struct nfs4_client *clp, struct nfs4_cpntf_state **cps); static inline void get_nfs4_file(struct nfs4_file *fi) { refcount_inc(&fi->fi_ref); } struct nfsd_file *find_any_file(struct nfs4_file *f); /* grace period management */ void nfsd4_end_grace(struct nfsd_net *nn); /* nfs4recover operations */ extern int nfsd4_client_tracking_init(struct net *net); extern void nfsd4_client_tracking_exit(struct net *net); extern void nfsd4_client_record_create(struct nfs4_client *clp); extern void nfsd4_client_record_remove(struct nfs4_client *clp); extern int nfsd4_client_record_check(struct nfs4_client *clp); extern void nfsd4_record_grace_done(struct nfsd_net *nn); static inline bool try_to_expire_client(struct nfs4_client *clp) { cmpxchg(&clp->cl_state, NFSD4_COURTESY, NFSD4_EXPIRABLE); return clp->cl_state == NFSD4_EXPIRABLE; } extern __be32 nfsd4_deleg_getattr_conflict(struct svc_rqst *rqstp, struct inode *inode); #endif /* NFSD4_STATE_H */
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