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Commit dcef0413 authored by J. Bruce Fields's avatar J. Bruce Fields
Browse files

nfsd4: move some of nfs4_stateid into a separate structure 



We want delegations to share more with open/lock stateid's, so first
we'll pull out some of the common stuff we want to share.

Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent 91a8c040

fs/nfsd/nfs4state.c

+87 −87
Original line number Diff line number Diff line
@@ -159,7 +159,7 @@ static struct list_head open_ownerstr_hashtbl[OPEN_OWNER_HASH_SIZE]; 
#define FILE_HASH_BITS                   8

#define FILE_HASH_SIZE                  (1 << FILE_HASH_BITS)



/* hash table for (open)nfs4_stateid */

/* hash table for (open)nfs4_ol_stateid */

#define STATEID_HASH_BITS              10

#define STATEID_HASH_SIZE              (1 << STATEID_HASH_BITS)

#define STATEID_HASH_MASK              (STATEID_HASH_SIZE - 1)
@@ -219,7 +219,7 @@ static void nfs4_file_put_access(struct nfs4_file *fp, int oflag) 
}



static struct nfs4_delegation *

alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_fh *current_fh, u32 type)

alloc_init_deleg(struct nfs4_client *clp, struct nfs4_ol_stateid *stp, struct svc_fh *current_fh, u32 type)

{

	struct nfs4_delegation *dp;

	struct nfs4_file *fp = stp->st_file;
@@ -380,7 +380,7 @@ set_deny(unsigned int *deny, unsigned long bmap) { 
}



static int

test_share(struct nfs4_stateid *stp, struct nfsd4_open *open) {

test_share(struct nfs4_ol_stateid *stp, struct nfsd4_open *open) {

	unsigned int access, deny;



	set_access(&access, stp->st_access_bmap);
@@ -403,14 +403,14 @@ static int nfs4_access_to_omode(u32 access) 
	BUG();

}



static void unhash_generic_stateid(struct nfs4_stateid *stp)

static void unhash_generic_stateid(struct nfs4_ol_stateid *stp)

{

	list_del(&stp->st_hash);

	list_del(&stp->st_stid.sc_hash);

	list_del(&stp->st_perfile);

	list_del(&stp->st_perstateowner);

}



static void close_generic_stateid(struct nfs4_stateid *stp)

static void close_generic_stateid(struct nfs4_ol_stateid *stp)

{

	int i;
@@ -426,13 +426,13 @@ static void close_generic_stateid(struct nfs4_stateid *stp) 
	stp->st_file = NULL;

}



static void free_generic_stateid(struct nfs4_stateid *stp)

static void free_generic_stateid(struct nfs4_ol_stateid *stp)

{

	close_generic_stateid(stp);

	kmem_cache_free(stateid_slab, stp);

}



static void release_lock_stateid(struct nfs4_stateid *stp)

static void release_lock_stateid(struct nfs4_ol_stateid *stp)

{

	struct file *file;
@@ -445,14 +445,14 @@ static void release_lock_stateid(struct nfs4_stateid *stp) 


static void unhash_lockowner(struct nfs4_lockowner *lo)

{

	struct nfs4_stateid *stp;

	struct nfs4_ol_stateid *stp;



	list_del(&lo->lo_owner.so_idhash);

	list_del(&lo->lo_owner.so_strhash);

	list_del(&lo->lo_perstateid);

	while (!list_empty(&lo->lo_owner.so_stateids)) {

		stp = list_first_entry(&lo->lo_owner.so_stateids,

				struct nfs4_stateid, st_perstateowner);

				struct nfs4_ol_stateid, st_perstateowner);

		release_lock_stateid(stp);

	}

}
@@ -464,7 +464,7 @@ static void release_lockowner(struct nfs4_lockowner *lo) 
}



static void

release_stateid_lockowners(struct nfs4_stateid *open_stp)

release_stateid_lockowners(struct nfs4_ol_stateid *open_stp)

{

	struct nfs4_lockowner *lo;
@@ -475,7 +475,7 @@ release_stateid_lockowners(struct nfs4_stateid *open_stp) 
	}

}



static void release_open_stateid(struct nfs4_stateid *stp)

static void release_open_stateid(struct nfs4_ol_stateid *stp)

{

	unhash_generic_stateid(stp);

	release_stateid_lockowners(stp);
@@ -484,14 +484,14 @@ static void release_open_stateid(struct nfs4_stateid *stp) 


static void unhash_openowner(struct nfs4_openowner *oo)

{

	struct nfs4_stateid *stp;

	struct nfs4_ol_stateid *stp;



	list_del(&oo->oo_owner.so_idhash);

	list_del(&oo->oo_owner.so_strhash);

	list_del(&oo->oo_perclient);

	while (!list_empty(&oo->oo_owner.so_stateids)) {

		stp = list_first_entry(&oo->oo_owner.so_stateids,

				struct nfs4_stateid, st_perstateowner);

				struct nfs4_ol_stateid, st_perstateowner);

		release_open_stateid(stp);

	}

}
@@ -1068,26 +1068,26 @@ same_stateid(stateid_t *id_one, stateid_t *id_two) 
	return id_one->si_fileid == id_two->si_fileid;

}



static struct nfs4_stateid *find_stateid(stateid_t *t)

static struct nfs4_ol_stateid *find_stateid(stateid_t *t)

{

	struct nfs4_stateid *s;

	struct nfs4_stid *s;

	unsigned int hashval;



	hashval = stateid_hashval(t->si_stateownerid, t->si_fileid);

	list_for_each_entry(s, &stateid_hashtbl[hashval], st_hash)

		if (same_stateid(&s->st_stateid, t))

			return s;

	list_for_each_entry(s, &stateid_hashtbl[hashval], sc_hash)

		if (same_stateid(&s->sc_stateid, t))

			return openlockstateid(s);

	return NULL;

}



static struct nfs4_stateid *find_stateid_by_type(stateid_t *t, char typemask)

static struct nfs4_ol_stateid *find_stateid_by_type(stateid_t *t, char typemask)

{

	struct nfs4_stateid *s;

	struct nfs4_ol_stateid *s;



	s = find_stateid(t);

	if (!s)

		return NULL;

	if (typemask & s->st_type)

	if (typemask & s->st_stid.sc_type)

		return s;

	return NULL;

}
@@ -2232,7 +2232,7 @@ nfsd4_init_slabs(void) 
	if (file_slab == NULL)

		goto out_nomem;

	stateid_slab = kmem_cache_create("nfsd4_stateids",

			sizeof(struct nfs4_stateid), 0, 0, NULL);

			sizeof(struct nfs4_ol_stateid), 0, 0, NULL);

	if (stateid_slab == NULL)

		goto out_nomem;

	deleg_slab = kmem_cache_create("nfsd4_delegations",
@@ -2314,23 +2314,23 @@ alloc_init_open_stateowner(unsigned int strhashval, struct nfs4_client *clp, str 
}



static inline void

init_open_stateid(struct nfs4_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) {

init_open_stateid(struct nfs4_ol_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) {

	struct nfs4_openowner *oo = open->op_openowner;

	unsigned int hashval = stateid_hashval(oo->oo_owner.so_id, fp->fi_id);



	INIT_LIST_HEAD(&stp->st_lockowners);

	list_add(&stp->st_hash, &stateid_hashtbl[hashval]);

	list_add(&stp->st_stid.sc_hash, &stateid_hashtbl[hashval]);

	list_add(&stp->st_perstateowner, &oo->oo_owner.so_stateids);

	list_add(&stp->st_perfile, &fp->fi_stateids);

	stp->st_type = NFS4_OPEN_STID;

	stp->st_stid.sc_type = NFS4_OPEN_STID;

	stp->st_stateowner = &oo->oo_owner;

	get_nfs4_file(fp);

	stp->st_file = fp;

	stp->st_stateid.si_boot = boot_time;

	stp->st_stateid.si_stateownerid = oo->oo_owner.so_id;

	stp->st_stateid.si_fileid = fp->fi_id;

	stp->st_stid.sc_stateid.si_boot = boot_time;

	stp->st_stid.sc_stateid.si_stateownerid = oo->oo_owner.so_id;

	stp->st_stid.sc_stateid.si_fileid = fp->fi_id;

	/* note will be incremented before first return to client: */

	stp->st_stateid.si_generation = 0;

	stp->st_stid.sc_stateid.si_generation = 0;

	stp->st_access_bmap = 0;

	stp->st_deny_bmap = 0;

	__set_bit(open->op_share_access & ~NFS4_SHARE_WANT_MASK,
@@ -2422,7 +2422,7 @@ nfs4_share_conflict(struct svc_fh *current_fh, unsigned int deny_type) 
{

	struct inode *ino = current_fh->fh_dentry->d_inode;

	struct nfs4_file *fp;

	struct nfs4_stateid *stp;

	struct nfs4_ol_stateid *stp;

	__be32 ret;



	dprintk("NFSD: nfs4_share_conflict\n");
@@ -2611,9 +2611,9 @@ nfs4_check_deleg(struct nfs4_file *fp, struct nfsd4_open *open, 
}



static __be32

nfs4_check_open(struct nfs4_file *fp, struct nfsd4_open *open, struct nfs4_stateid **stpp)

nfs4_check_open(struct nfs4_file *fp, struct nfsd4_open *open, struct nfs4_ol_stateid **stpp)

{

	struct nfs4_stateid *local;

	struct nfs4_ol_stateid *local;

	struct nfs4_openowner *oo = open->op_openowner;



	list_for_each_entry(local, &fp->fi_stateids, st_perfile) {
@@ -2630,7 +2630,7 @@ nfs4_check_open(struct nfs4_file *fp, struct nfsd4_open *open, struct nfs4_state 
	return nfs_ok;

}



static inline struct nfs4_stateid *

static inline struct nfs4_ol_stateid *

nfs4_alloc_stateid(void)

{

	return kmem_cache_alloc(stateid_slab, GFP_KERNEL);
@@ -2672,11 +2672,11 @@ static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file *fp, 
}



static __be32

nfs4_new_open(struct svc_rqst *rqstp, struct nfs4_stateid **stpp,

nfs4_new_open(struct svc_rqst *rqstp, struct nfs4_ol_stateid **stpp,

		struct nfs4_file *fp, struct svc_fh *cur_fh,

		struct nfsd4_open *open)

{

	struct nfs4_stateid *stp;

	struct nfs4_ol_stateid *stp;

	__be32 status;



	stp = nfs4_alloc_stateid();
@@ -2708,7 +2708,7 @@ nfsd4_truncate(struct svc_rqst *rqstp, struct svc_fh *fh, 
}



static __be32

nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *cur_fh, struct nfs4_stateid *stp, struct nfsd4_open *open)

nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *cur_fh, struct nfs4_ol_stateid *stp, struct nfsd4_open *open)

{

	u32 op_share_access = open->op_share_access & ~NFS4_SHARE_WANT_MASK;

	bool new_access;
@@ -2820,7 +2820,7 @@ static int nfs4_set_delegation(struct nfs4_delegation *dp, int flag) 
 * Attempt to hand out a delegation.

 */

static void

nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_stateid *stp)

nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_ol_stateid *stp)

{

	struct nfs4_delegation *dp;

	struct nfs4_openowner *oo = container_of(stp->st_stateowner, struct nfs4_openowner, oo_owner);
@@ -2888,7 +2888,7 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf 
	struct nfsd4_compoundres *resp = rqstp->rq_resp;

	struct nfs4_file *fp = NULL;

	struct inode *ino = current_fh->fh_dentry->d_inode;

	struct nfs4_stateid *stp = NULL;

	struct nfs4_ol_stateid *stp = NULL;

	struct nfs4_delegation *dp = NULL;

	__be32 status;
@@ -2938,8 +2938,8 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf 
			goto out;

		}

	}

	update_stateid(&stp->st_stateid);

	memcpy(&open->op_stateid, &stp->st_stateid, sizeof(stateid_t));

	update_stateid(&stp->st_stid.sc_stateid);

	memcpy(&open->op_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));



	if (nfsd4_has_session(&resp->cstate))

		open->op_openowner->oo_confirmed = 1;
@@ -2953,7 +2953,7 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf 
	status = nfs_ok;



	dprintk("%s: stateid=" STATEID_FMT "\n", __func__,

		STATEID_VAL(&stp->st_stateid));

		STATEID_VAL(&stp->st_stid.sc_stateid));

out:

	if (fp)

		put_nfs4_file(fp);
@@ -3122,7 +3122,7 @@ static struct nfs4_openowner * search_close_lru(u32 st_id) 
}



static inline int

nfs4_check_fh(struct svc_fh *fhp, struct nfs4_stateid *stp)

nfs4_check_fh(struct svc_fh *fhp, struct nfs4_ol_stateid *stp)

{

	return fhp->fh_dentry->d_inode != stp->st_file->fi_inode;

}
@@ -3153,7 +3153,7 @@ access_permit_write(unsigned long access_bmap) 
}



static

__be32 nfs4_check_openmode(struct nfs4_stateid *stp, int flags)

__be32 nfs4_check_openmode(struct nfs4_ol_stateid *stp, int flags)

{

        __be32 status = nfserr_openmode;
@@ -3237,7 +3237,7 @@ static int is_delegation_stateid(stateid_t *stateid) 


__be32 nfs4_validate_stateid(stateid_t *stateid, bool has_session)

{

	struct nfs4_stateid *stp = NULL;

	struct nfs4_ol_stateid *stp = NULL;

	__be32 status = nfserr_stale_stateid;



	if (STALE_STATEID(stateid))
@@ -3252,7 +3252,7 @@ __be32 nfs4_validate_stateid(stateid_t *stateid, bool has_session) 
	    && !openowner(stp->st_stateowner)->oo_confirmed)

		goto out;



	status = check_stateid_generation(stateid, &stp->st_stateid, has_session);

	status = check_stateid_generation(stateid, &stp->st_stid.sc_stateid, has_session);

	if (status)

		goto out;
@@ -3268,7 +3268,7 @@ __be32 
nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,

			   stateid_t *stateid, int flags, struct file **filpp)

{

	struct nfs4_stateid *stp = NULL;

	struct nfs4_ol_stateid *stp = NULL;

	struct nfs4_delegation *dp = NULL;

	struct svc_fh *current_fh = &cstate->current_fh;

	struct inode *ino = current_fh->fh_dentry->d_inode;
@@ -3317,7 +3317,7 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate, 
		if (stp->st_stateowner->so_is_open_owner

		    && !openowner(stp->st_stateowner)->oo_confirmed)

			goto out;

		status = check_stateid_generation(stateid, &stp->st_stateid,

		status = check_stateid_generation(stateid, &stp->st_stid.sc_stateid,

						  nfsd4_has_session(cstate));

		if (status)

			goto out;
@@ -3347,7 +3347,7 @@ nfsd4_free_delegation_stateid(stateid_t *stateid) 
}



static __be32

nfsd4_free_lock_stateid(struct nfs4_stateid *stp)

nfsd4_free_lock_stateid(struct nfs4_ol_stateid *stp)

{

	if (check_for_locks(stp->st_file, lockowner(stp->st_stateowner)))

		return nfserr_locks_held;
@@ -3374,7 +3374,7 @@ nfsd4_free_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 
		   struct nfsd4_free_stateid *free_stateid)

{

	stateid_t *stateid = &free_stateid->fr_stateid;

	struct nfs4_stateid *stp;

	struct nfs4_ol_stateid *stp;

	__be32 ret;



	nfs4_lock_state();
@@ -3388,11 +3388,11 @@ nfsd4_free_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 
		ret = nfserr_bad_stateid;

		goto out;

	}

	ret = check_stateid_generation(stateid, &stp->st_stateid, 1);

	ret = check_stateid_generation(stateid, &stp->st_stid.sc_stateid, 1);

	if (ret)

		goto out;



	if (stp->st_type == NFS4_OPEN_STID) {

	if (stp->st_stid.sc_type == NFS4_OPEN_STID) {

		ret = nfserr_locks_held;

		goto out;

	} else {
@@ -3421,7 +3421,7 @@ static __be32 nfs4_nospecial_stateid_checks(stateid_t *stateid) 
	return nfs_ok;

}



static __be32 nfs4_seqid_op_checks(struct nfsd4_compound_state *cstate, stateid_t *stateid, u32 seqid, struct nfs4_stateid *stp)

static __be32 nfs4_seqid_op_checks(struct nfsd4_compound_state *cstate, stateid_t *stateid, u32 seqid, struct nfs4_ol_stateid *stp)

{

	struct svc_fh *current_fh = &cstate->current_fh;

	struct nfs4_stateowner *sop = stp->st_stateowner;
@@ -3432,7 +3432,7 @@ static __be32 nfs4_seqid_op_checks(struct nfsd4_compound_state *cstate, stateid_ 
	status = nfsd4_check_seqid(cstate, sop, seqid);

	if (status)

		return status;

	return check_stateid_generation(stateid, &stp->st_stateid, nfsd4_has_session(cstate));

	return check_stateid_generation(stateid, &stp->st_stid.sc_stateid, nfsd4_has_session(cstate));

}



/*
@@ -3441,7 +3441,7 @@ static __be32 nfs4_seqid_op_checks(struct nfsd4_compound_state *cstate, stateid_ 
static __be32

nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,

			 stateid_t *stateid, char typemask,

			 struct nfs4_stateid **stpp)

			 struct nfs4_ol_stateid **stpp)

{

	__be32 status;
@@ -3461,7 +3461,7 @@ nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid, 
	return nfs4_seqid_op_checks(cstate, stateid, seqid, *stpp);

}



static __be32 nfs4_preprocess_confirmed_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid, stateid_t *stateid, struct nfs4_stateid **stpp)

static __be32 nfs4_preprocess_confirmed_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid, stateid_t *stateid, struct nfs4_ol_stateid **stpp)

{

	__be32 status;

	struct nfs4_openowner *oo;
@@ -3482,7 +3482,7 @@ nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 
{

	__be32 status;

	struct nfs4_openowner *oo;

	struct nfs4_stateid *stp;

	struct nfs4_ol_stateid *stp;



	dprintk("NFSD: nfsd4_open_confirm on file %.*s\n",

			(int)cstate->current_fh.fh_dentry->d_name.len,
@@ -3504,10 +3504,10 @@ nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 
	if (oo->oo_confirmed)

		goto out;

	oo->oo_confirmed = 1;

	update_stateid(&stp->st_stateid);

	memcpy(&oc->oc_resp_stateid, &stp->st_stateid, sizeof(stateid_t));

	update_stateid(&stp->st_stid.sc_stateid);

	memcpy(&oc->oc_resp_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));

	dprintk("NFSD: %s: success, seqid=%d stateid=" STATEID_FMT "\n",

		__func__, oc->oc_seqid, STATEID_VAL(&stp->st_stateid));

		__func__, oc->oc_seqid, STATEID_VAL(&stp->st_stid.sc_stateid));



	nfsd4_create_clid_dir(oo->oo_owner.so_client);

	status = nfs_ok;
@@ -3517,7 +3517,7 @@ nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 
	return status;

}



static inline void nfs4_file_downgrade(struct nfs4_stateid *stp, unsigned int to_access)

static inline void nfs4_file_downgrade(struct nfs4_ol_stateid *stp, unsigned int to_access)

{

	int i;
@@ -3545,7 +3545,7 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp, 
		     struct nfsd4_open_downgrade *od)

{

	__be32 status;

	struct nfs4_stateid *stp;

	struct nfs4_ol_stateid *stp;



	dprintk("NFSD: nfsd4_open_downgrade on file %.*s\n", 

			(int)cstate->current_fh.fh_dentry->d_name.len,
@@ -3575,8 +3575,8 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp, 


	reset_union_bmap_deny(od->od_share_deny, &stp->st_deny_bmap);



	update_stateid(&stp->st_stateid);

	memcpy(&od->od_stateid, &stp->st_stateid, sizeof(stateid_t));

	update_stateid(&stp->st_stid.sc_stateid);

	memcpy(&od->od_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));

	status = nfs_ok;

out:

	if (!cstate->replay_owner)
@@ -3593,7 +3593,7 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 
{

	__be32 status;

	struct nfs4_openowner *oo;

	struct nfs4_stateid *stp;

	struct nfs4_ol_stateid *stp;



	dprintk("NFSD: nfsd4_close on file %.*s\n", 

			(int)cstate->current_fh.fh_dentry->d_name.len,
@@ -3622,8 +3622,8 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 
		goto out; 

	oo = openowner(stp->st_stateowner);

	status = nfs_ok;

	update_stateid(&stp->st_stateid);

	memcpy(&close->cl_stateid, &stp->st_stateid, sizeof(stateid_t));

	update_stateid(&stp->st_stid.sc_stateid);

	memcpy(&close->cl_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));



	/* release_stateid() calls nfsd_close() if needed */

	release_open_stateid(stp);
@@ -3828,7 +3828,7 @@ find_lockowner_str(struct inode *inode, clientid_t *clid, 
	return NULL;

}



static void hash_lockowner(struct nfs4_lockowner *lo, unsigned int strhashval, struct nfs4_client *clp, struct nfs4_stateid *open_stp)

static void hash_lockowner(struct nfs4_lockowner *lo, unsigned int strhashval, struct nfs4_client *clp, struct nfs4_ol_stateid *open_stp)

{

	unsigned int idhashval;
@@ -3847,7 +3847,7 @@ static void hash_lockowner(struct nfs4_lockowner *lo, unsigned int strhashval, s 
 */



static struct nfs4_lockowner *

alloc_init_lock_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfs4_stateid *open_stp, struct nfsd4_lock *lock) {

alloc_init_lock_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfs4_ol_stateid *open_stp, struct nfsd4_lock *lock) {

	struct nfs4_lockowner *lo;



	lo = alloc_stateowner(lockowner_slab, &lock->lk_new_owner, clp);
@@ -3862,27 +3862,27 @@ alloc_init_lock_stateowner(unsigned int strhashval, struct nfs4_client *clp, str 
	return lo;

}



static struct nfs4_stateid *

alloc_init_lock_stateid(struct nfs4_lockowner *lo, struct nfs4_file *fp, struct nfs4_stateid *open_stp)

static struct nfs4_ol_stateid *

alloc_init_lock_stateid(struct nfs4_lockowner *lo, struct nfs4_file *fp, struct nfs4_ol_stateid *open_stp)

{

	struct nfs4_stateid *stp;

	struct nfs4_ol_stateid *stp;

	unsigned int hashval = stateid_hashval(lo->lo_owner.so_id, fp->fi_id);



	stp = nfs4_alloc_stateid();

	if (stp == NULL)

		goto out;

	list_add(&stp->st_hash, &stateid_hashtbl[hashval]);

	list_add(&stp->st_stid.sc_hash, &stateid_hashtbl[hashval]);

	list_add(&stp->st_perfile, &fp->fi_stateids);

	list_add(&stp->st_perstateowner, &lo->lo_owner.so_stateids);

	stp->st_stateowner = &lo->lo_owner;

	stp->st_type = NFS4_LOCK_STID;

	stp->st_stid.sc_type = NFS4_LOCK_STID;

	get_nfs4_file(fp);

	stp->st_file = fp;

	stp->st_stateid.si_boot = boot_time;

	stp->st_stateid.si_stateownerid = lo->lo_owner.so_id;

	stp->st_stateid.si_fileid = fp->fi_id;

	stp->st_stid.sc_stateid.si_boot = boot_time;

	stp->st_stid.sc_stateid.si_stateownerid = lo->lo_owner.so_id;

	stp->st_stid.sc_stateid.si_fileid = fp->fi_id;

	/* note will be incremented before first return to client: */

	stp->st_stateid.si_generation = 0;

	stp->st_stid.sc_stateid.si_generation = 0;

	stp->st_access_bmap = 0;

	stp->st_deny_bmap = open_stp->st_deny_bmap;

	stp->st_openstp = open_stp;
@@ -3898,7 +3898,7 @@ check_lock_length(u64 offset, u64 length) 
	     LOFF_OVERFLOW(offset, length)));

}



static void get_lock_access(struct nfs4_stateid *lock_stp, u32 access)

static void get_lock_access(struct nfs4_ol_stateid *lock_stp, u32 access)

{

	struct nfs4_file *fp = lock_stp->st_file;

	int oflag = nfs4_access_to_omode(access);
@@ -3918,7 +3918,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 
{

	struct nfs4_openowner *open_sop = NULL;

	struct nfs4_lockowner *lock_sop = NULL;

	struct nfs4_stateid *lock_stp;

	struct nfs4_ol_stateid *lock_stp;

	struct nfs4_file *fp;

	struct file *filp = NULL;

	struct file_lock file_lock;
@@ -3949,7 +3949,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 
		 * Use open owner and open stateid to create lock owner and

		 * lock stateid.

		 */

		struct nfs4_stateid *open_stp = NULL;

		struct nfs4_ol_stateid *open_stp = NULL;

		

		status = nfserr_stale_clientid;

		if (!nfsd4_has_session(cstate) &&
@@ -4052,8 +4052,8 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 
	err = vfs_lock_file(filp, F_SETLK, &file_lock, &conflock);

	switch (-err) {

	case 0: /* success! */

		update_stateid(&lock_stp->st_stateid);

		memcpy(&lock->lk_resp_stateid, &lock_stp->st_stateid, 

		update_stateid(&lock_stp->st_stid.sc_stateid);

		memcpy(&lock->lk_resp_stateid, &lock_stp->st_stid.sc_stateid, 

				sizeof(stateid_t));

		status = 0;

		break;
@@ -4172,7 +4172,7 @@ __be32 
nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,

	    struct nfsd4_locku *locku)

{

	struct nfs4_stateid *stp;

	struct nfs4_ol_stateid *stp;

	struct file *filp = NULL;

	struct file_lock file_lock;

	__be32 status;
@@ -4220,8 +4220,8 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 
	/*

	* OK, unlock succeeded; the only thing left to do is update the stateid.

	*/

	update_stateid(&stp->st_stateid);

	memcpy(&locku->lu_stateid, &stp->st_stateid, sizeof(stateid_t));

	update_stateid(&stp->st_stid.sc_stateid);

	memcpy(&locku->lu_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));



out:

	nfs4_unlock_state();
@@ -4264,7 +4264,7 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp, 
	clientid_t *clid = &rlockowner->rl_clientid;

	struct nfs4_stateowner *sop;

	struct nfs4_lockowner *lo;

	struct nfs4_stateid *stp;

	struct nfs4_ol_stateid *stp;

	struct xdr_netobj *owner = &rlockowner->rl_owner;

	struct list_head matches;

	int i;

fs/nfsd/state.h

+19 −10
Original line number Diff line number Diff line
@@ -328,10 +328,10 @@ struct nfs4_replay { 
*         for lock_owner

*    so_perclient: nfs4_client->cl_perclient entry - used when nfs4_client

*         struct is reaped.

*    so_perfilestate: heads the list of nfs4_stateid (either open or lock) 

*         and is used to ensure no dangling nfs4_stateid references when we 

*    so_perfilestate: heads the list of nfs4_ol_stateid (either open or lock) 

*         and is used to ensure no dangling nfs4_ol_stateid references when we 

*         release a stateowner.

*    so_perlockowner: (open) nfs4_stateid->st_perlockowner entry - used when

*    so_perlockowner: (open) nfs4_ol_stateid->st_perlockowner entry - used when

*         close is called to reap associated byte-range locks

*    so_close_lru: (open) stateowner is placed on this list instead of being

*         reaped (when so_perfilestate is empty) to hold the last close replay.
@@ -430,9 +430,9 @@ static inline struct file *find_any_file(struct nfs4_file *f) 
}



/*

* nfs4_stateid can either be an open stateid or (eventually) a lock stateid

* nfs4_ol_stateid can either be an open stateid or (eventually) a lock stateid

*

* (open)nfs4_stateid: one per (open)nfs4_stateowner, nfs4_file

* (open)nfs4_ol_stateid: one per (open)nfs4_stateowner, nfs4_file

*

* 	st_hash: stateid_hashtbl[] entry or lockstateid_hashtbl entry

* 	st_perfile: file_hashtbl[] entry.
@@ -446,22 +446,31 @@ static inline struct file *find_any_file(struct nfs4_file *f) 
* we should consider defining separate structs for the two cases.

*/



struct nfs4_stateid {

struct nfs4_stid {

#define NFS4_OPEN_STID 1

#define NFS4_LOCK_STID 2

	char st_type;

	struct list_head              st_hash; 

	char sc_type;

	struct list_head sc_hash;

	stateid_t sc_stateid;

};



struct nfs4_ol_stateid {

	struct nfs4_stid    st_stid;

	struct list_head              st_perfile;

	struct list_head              st_perstateowner;

	struct list_head              st_lockowners;

	struct nfs4_stateowner      * st_stateowner;

	struct nfs4_file            * st_file;

	stateid_t                     st_stateid;

	unsigned long                 st_access_bmap;

	unsigned long                 st_deny_bmap;

	struct nfs4_stateid         * st_openstp;

	struct nfs4_ol_stateid         * st_openstp;

};



static inline struct nfs4_ol_stateid *openlockstateid(struct nfs4_stid *s)

{

	return container_of(s, struct nfs4_ol_stateid, st_stid);

}



/* flags for preprocess_seqid_op() */

#define RD_STATE	        0x00000010

#define WR_STATE	        0x00000020