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nfsd4: split stateowners into open and lockowners

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The stateowner has some fields that only make sense for openowners, and
some that only make sense for lockowners, and I find it a lot clearer if
those are separated out.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2011-07-30 23:33:59 -04:00
parent f4dee24cca
commit fe0750e5c4
5 changed files with 224 additions and 198 deletions
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18
fs/nfsd/nfs4proc.c
View File

@ -250,7 +250,7 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
fh_dup2(current_fh, &resfh);
/* set reply cache */
fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
&resfh.fh_handle);
if (!created)
status = do_open_permission(rqstp, current_fh, open,
@ -277,7 +277,7 @@ do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_
memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
/* set replay cache */
fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
&current_fh->fh_handle);
open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
@ -306,9 +306,9 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
__be32 status;
struct nfsd4_compoundres *resp;
dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
(int)open->op_fname.len, open->op_fname.data,
open->op_stateowner);
open->op_openowner);
/* This check required by spec. */
if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
@ -332,7 +332,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
resp = rqstp->rq_resp;
status = nfsd4_process_open1(&resp->cstate, open);
if (status == nfserr_replay_me) {
struct nfs4_replay *rp = &open->op_stateowner->so_replay;
struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
fh_put(&cstate->current_fh);
fh_copy_shallow(&cstate->current_fh.fh_handle,
&rp->rp_openfh);
@ -374,7 +374,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
goto out;
break;
case NFS4_OPEN_CLAIM_PREVIOUS:
open->op_stateowner->so_confirmed = 1;
open->op_openowner->oo_confirmed = 1;
/*
* The CURRENT_FH is already set to the file being
* opened. (1) set open->op_cinfo, (2) set
@ -387,7 +387,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
goto out;
break;
case NFS4_OPEN_CLAIM_DELEGATE_PREV:
open->op_stateowner->so_confirmed = 1;
open->op_openowner->oo_confirmed = 1;
dprintk("NFSD: unsupported OPEN claim type %d\n",
open->op_claim_type);
status = nfserr_notsupp;
@ -405,8 +405,8 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
*/
status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
out:
if (open->op_stateowner)
cstate->replay_owner = open->op_stateowner;
if (open->op_openowner)
cstate->replay_owner = &open->op_openowner->oo_owner;
else
nfs4_unlock_state();
return status;

367
fs/nfsd/nfs4state.c
View File

@ -63,7 +63,7 @@ static u64 current_sessionid = 1;
static struct nfs4_stateid * find_stateid(stateid_t *stid, int flags);
static struct nfs4_delegation * search_for_delegation(stateid_t *stid);
static struct nfs4_delegation * find_delegation_stateid(struct inode *ino, stateid_t *stid);
static int check_for_locks(struct nfs4_file *filp, struct nfs4_stateowner *lowner);
static int check_for_locks(struct nfs4_file *filp, struct nfs4_lockowner *lowner);
/* Locking: */
@ -77,7 +77,8 @@ static DEFINE_MUTEX(client_mutex);
*/
static DEFINE_SPINLOCK(recall_lock);
static struct kmem_cache *stateowner_slab = NULL;
static struct kmem_cache *openowner_slab = NULL;
static struct kmem_cache *lockowner_slab = NULL;
static struct kmem_cache *file_slab = NULL;
static struct kmem_cache *stateid_slab = NULL;
static struct kmem_cache *deleg_slab = NULL;
@ -432,41 +433,39 @@ static void release_lock_stateid(struct nfs4_stateid *stp)
unhash_generic_stateid(stp);
file = find_any_file(stp->st_file);
if (file)
locks_remove_posix(file, (fl_owner_t)stp->st_stateowner);
locks_remove_posix(file, (fl_owner_t)lockowner(stp->st_stateowner));
free_generic_stateid(stp);
}
static void unhash_lockowner(struct nfs4_stateowner *sop)
static void unhash_lockowner(struct nfs4_lockowner *lo)
{
struct nfs4_stateid *stp;
list_del(&sop->so_idhash);
list_del(&sop->so_strhash);
list_del(&sop->so_perstateid);
while (!list_empty(&sop->so_stateids)) {
stp = list_first_entry(&sop->so_stateids,
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);
release_lock_stateid(stp);
}
}
static void release_lockowner(struct nfs4_stateowner *sop)
static void release_lockowner(struct nfs4_lockowner *lo)
{
unhash_lockowner(sop);
nfs4_free_stateowner(sop);
unhash_lockowner(lo);
nfs4_free_lockowner(lo);
}
static void
release_stateid_lockowners(struct nfs4_stateid *open_stp)
{
struct nfs4_stateowner *lock_sop;
struct nfs4_lockowner *lo;
while (!list_empty(&open_stp->st_lockowners)) {
lock_sop = list_entry(open_stp->st_lockowners.next,
struct nfs4_stateowner, so_perstateid);
/* list_del(&open_stp->st_lockowners); */
BUG_ON(lock_sop->so_is_open_owner);
release_lockowner(lock_sop);
lo = list_entry(open_stp->st_lockowners.next,
struct nfs4_lockowner, lo_perstateid);
release_lockowner(lo);
}
}
@ -477,26 +476,25 @@ static void release_open_stateid(struct nfs4_stateid *stp)
free_generic_stateid(stp);
}
static void unhash_openowner(struct nfs4_stateowner *sop)
static void unhash_openowner(struct nfs4_openowner *oo)
{
struct nfs4_stateid *stp;
list_del(&sop->so_idhash);
list_del(&sop->so_strhash);
list_del(&sop->so_perclient);
list_del(&sop->so_perstateid); /* XXX: necessary? */
while (!list_empty(&sop->so_stateids)) {
stp = list_first_entry(&sop->so_stateids,
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);
release_open_stateid(stp);
}
}
static void release_openowner(struct nfs4_stateowner *sop)
static void release_openowner(struct nfs4_openowner *oo)
{
unhash_openowner(sop);
list_del(&sop->so_close_lru);
nfs4_free_stateowner(sop);
unhash_openowner(oo);
list_del(&oo->oo_close_lru);
nfs4_free_openowner(oo);
}
#define SESSION_HASH_SIZE 512
@ -961,7 +959,7 @@ unhash_client_locked(struct nfs4_client *clp)
static void
expire_client(struct nfs4_client *clp)
{
struct nfs4_stateowner *sop;
struct nfs4_openowner *oo;
struct nfs4_delegation *dp;
struct list_head reaplist;
@ -979,8 +977,8 @@ expire_client(struct nfs4_client *clp)
unhash_delegation(dp);
}
while (!list_empty(&clp->cl_openowners)) {
sop = list_entry(clp->cl_openowners.next, struct nfs4_stateowner, so_perclient);
release_openowner(sop);
oo = list_entry(clp->cl_openowners.next, struct nfs4_openowner, oo_perclient);
release_openowner(oo);
}
nfsd4_shutdown_callback(clp);
if (clp->cl_cb_conn.cb_xprt)
@ -2173,7 +2171,8 @@ nfsd4_free_slab(struct kmem_cache **slab)
void
nfsd4_free_slabs(void)
{
nfsd4_free_slab(&stateowner_slab);
nfsd4_free_slab(&openowner_slab);
nfsd4_free_slab(&lockowner_slab);
nfsd4_free_slab(&file_slab);
nfsd4_free_slab(&stateid_slab);
nfsd4_free_slab(&deleg_slab);
@ -2182,9 +2181,13 @@ nfsd4_free_slabs(void)
static int
nfsd4_init_slabs(void)
{
stateowner_slab = kmem_cache_create("nfsd4_stateowners",
sizeof(struct nfs4_stateowner), 0, 0, NULL);
if (stateowner_slab == NULL)
openowner_slab = kmem_cache_create("nfsd4_openowners",
sizeof(struct nfs4_openowner), 0, 0, NULL);
if (openowner_slab == NULL)
goto out_nomem;
lockowner_slab = kmem_cache_create("nfsd4_lockowners",
sizeof(struct nfs4_openowner), 0, 0, NULL);
if (lockowner_slab == NULL)
goto out_nomem;
file_slab = kmem_cache_create("nfsd4_files",
sizeof(struct nfs4_file), 0, 0, NULL);
@ -2205,11 +2208,16 @@ out_nomem:
return -ENOMEM;
}
void
nfs4_free_stateowner(struct nfs4_stateowner *sop)
void nfs4_free_openowner(struct nfs4_openowner *oo)
{
kfree(sop->so_owner.data);
kmem_cache_free(stateowner_slab, sop);
kfree(oo->oo_owner.so_owner.data);
kmem_cache_free(openowner_slab, oo);
}
void nfs4_free_lockowner(struct nfs4_lockowner *lo)
{
kfree(lo->lo_owner.so_owner.data);
kmem_cache_free(lockowner_slab, lo);
}
static void init_nfs4_replay(struct nfs4_replay *rp)
@ -2219,74 +2227,72 @@ static void init_nfs4_replay(struct nfs4_replay *rp)
rp->rp_buf = rp->rp_ibuf;
}
static inline struct nfs4_stateowner *alloc_stateowner(struct xdr_netobj *owner, struct nfs4_client *clp)
static inline void *alloc_stateowner(struct kmem_cache *slab, struct xdr_netobj *owner, struct nfs4_client *clp)
{
struct nfs4_stateowner *sop;
sop = kmem_cache_alloc(stateowner_slab, GFP_KERNEL);
sop = kmem_cache_alloc(slab, GFP_KERNEL);
if (!sop)
return NULL;
sop->so_owner.data = kmemdup(owner->data, owner->len, GFP_KERNEL);
if (!sop->so_owner.data) {
kmem_cache_free(stateowner_slab, sop);
kmem_cache_free(slab, sop);
return NULL;
}
sop->so_owner.len = owner->len;
INIT_LIST_HEAD(&sop->so_perclient);
INIT_LIST_HEAD(&sop->so_stateids);
INIT_LIST_HEAD(&sop->so_perstateid);
INIT_LIST_HEAD(&sop->so_close_lru);
sop->so_id = current_ownerid++;
sop->so_time = 0;
sop->so_client = clp;
init_nfs4_replay(&sop->so_replay);
return sop;
}
static void hash_openowner(struct nfs4_stateowner *sop, struct nfs4_client *clp, unsigned int strhashval)
static void hash_openowner(struct nfs4_openowner *oo, struct nfs4_client *clp, unsigned int strhashval)
{
unsigned int idhashval;
idhashval = open_ownerid_hashval(sop->so_id);
list_add(&sop->so_idhash, &open_ownerid_hashtbl[idhashval]);
list_add(&sop->so_strhash, &open_ownerstr_hashtbl[strhashval]);
list_add(&sop->so_perclient, &clp->cl_openowners);
idhashval = open_ownerid_hashval(oo->oo_owner.so_id);
list_add(&oo->oo_owner.so_idhash, &open_ownerid_hashtbl[idhashval]);
list_add(&oo->oo_owner.so_strhash, &open_ownerstr_hashtbl[strhashval]);
list_add(&oo->oo_perclient, &clp->cl_openowners);
}
static struct nfs4_stateowner *
static struct nfs4_openowner *
alloc_init_open_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfsd4_open *open) {
struct nfs4_stateowner *sop;
struct nfs4_openowner *oo;
sop = alloc_stateowner(&open->op_owner, clp);
if (!sop)
oo = alloc_stateowner(openowner_slab, &open->op_owner, clp);
if (!oo)
return NULL;
sop->so_is_open_owner = 1;
sop->so_seqid = open->op_seqid;
sop->so_confirmed = 0;
hash_openowner(sop, clp, strhashval);
return sop;
oo->oo_owner.so_is_open_owner = 1;
oo->oo_owner.so_seqid = open->op_seqid;
oo->oo_confirmed = 0;
oo->oo_time = 0;
INIT_LIST_HEAD(&oo->oo_close_lru);
hash_openowner(oo, clp, strhashval);
return oo;
}
static inline void
init_stateid(struct nfs4_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) {
struct nfs4_stateowner *sop = open->op_stateowner;
unsigned int hashval = stateid_hashval(sop->so_id, fp->fi_id);
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_hash);
INIT_LIST_HEAD(&stp->st_perstateowner);
INIT_LIST_HEAD(&stp->st_lockowners);
INIT_LIST_HEAD(&stp->st_perfile);
list_add(&stp->st_hash, &stateid_hashtbl[hashval]);
list_add(&stp->st_perstateowner, &sop->so_stateids);
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_stateowner = sop;
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 = sop->so_id;
stp->st_stateid.si_stateownerid = oo->oo_owner.so_id;
stp->st_stateid.si_fileid = fp->fi_id;
/* note will be incremented before first return to client: */
stp->st_stateid.si_generation = 0;
@ -2299,12 +2305,12 @@ init_stateid(struct nfs4_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *
}
static void
move_to_close_lru(struct nfs4_stateowner *sop)
move_to_close_lru(struct nfs4_openowner *oo)
{
dprintk("NFSD: move_to_close_lru nfs4_stateowner %p\n", sop);
dprintk("NFSD: move_to_close_lru nfs4_openowner %p\n", oo);
list_move_tail(&sop->so_close_lru, &close_lru);
sop->so_time = get_seconds();
list_move_tail(&oo->oo_close_lru, &close_lru);
oo->oo_time = get_seconds();
}
static int
@ -2316,14 +2322,14 @@ same_owner_str(struct nfs4_stateowner *sop, struct xdr_netobj *owner,
(sop->so_client->cl_clientid.cl_id == clid->cl_id);
}
static struct nfs4_stateowner *
static struct nfs4_openowner *
find_openstateowner_str(unsigned int hashval, struct nfsd4_open *open)
{
struct nfs4_stateowner *so = NULL;
list_for_each_entry(so, &open_ownerstr_hashtbl[hashval], so_strhash) {
if (same_owner_str(so, &open->op_owner, &open->op_clientid))
return so;
return container_of(so, struct nfs4_openowner, oo_owner);
}
return NULL;
}
@ -2474,7 +2480,7 @@ nfsd4_process_open1(struct nfsd4_compound_state *cstate,
clientid_t *clientid = &open->op_clientid;
struct nfs4_client *clp = NULL;
unsigned int strhashval;
struct nfs4_stateowner *sop = NULL;
struct nfs4_openowner *oo = NULL;
__be32 status;
if (!check_name(open->op_owner))
@ -2484,34 +2490,34 @@ nfsd4_process_open1(struct nfsd4_compound_state *cstate,
return nfserr_stale_clientid;
strhashval = open_ownerstr_hashval(clientid->cl_id, &open->op_owner);
sop = find_openstateowner_str(strhashval, open);
open->op_stateowner = sop;
if (!sop) {
oo = find_openstateowner_str(strhashval, open);
open->op_openowner = oo;
if (!oo) {
/* Make sure the client's lease hasn't expired. */
clp = find_confirmed_client(clientid);
if (clp == NULL)
return nfserr_expired;
goto renew;
}
if (!sop->so_confirmed) {
if (!oo->oo_confirmed) {
/* Replace unconfirmed owners without checking for replay. */
clp = sop->so_client;
release_openowner(sop);
open->op_stateowner = NULL;
clp = oo->oo_owner.so_client;
release_openowner(oo);
open->op_openowner = NULL;
goto renew;
}
status = nfsd4_check_seqid(cstate, sop, open->op_seqid);
status = nfsd4_check_seqid(cstate, &oo->oo_owner, open->op_seqid);
if (status)
return status;
renew:
if (open->op_stateowner == NULL) {
sop = alloc_init_open_stateowner(strhashval, clp, open);
if (sop == NULL)
if (open->op_openowner == NULL) {
oo = alloc_init_open_stateowner(strhashval, clp, open);
if (oo == NULL)
return nfserr_jukebox;
open->op_stateowner = sop;
open->op_openowner = oo;
}
list_del_init(&sop->so_close_lru);
renew_client(sop->so_client);
list_del_init(&oo->oo_close_lru);
renew_client(oo->oo_owner.so_client);
return nfs_ok;
}
@ -2565,7 +2571,7 @@ out:
return nfs_ok;
if (status)
return status;
open->op_stateowner->so_confirmed = 1;
open->op_openowner->oo_confirmed = 1;
return nfs_ok;
}
@ -2573,14 +2579,14 @@ static __be32
nfs4_check_open(struct nfs4_file *fp, struct nfsd4_open *open, struct nfs4_stateid **stpp)
{
struct nfs4_stateid *local;
struct nfs4_stateowner *sop = open->op_stateowner;
struct nfs4_openowner *oo = open->op_openowner;
list_for_each_entry(local, &fp->fi_stateids, st_perfile) {
/* ignore lock owners */
if (local->st_stateowner->so_is_open_owner == 0)
continue;
/* remember if we have seen this open owner */
if (local->st_stateowner == sop)
if (local->st_stateowner == &oo->oo_owner)
*stpp = local;
/* check for conflicting share reservations */
if (!test_share(local, open))
@ -2698,8 +2704,8 @@ nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *c
static void
nfs4_set_claim_prev(struct nfsd4_open *open)
{
open->op_stateowner->so_confirmed = 1;
open->op_stateowner->so_client->cl_firststate = 1;
open->op_openowner->oo_confirmed = 1;
open->op_openowner->oo_owner.so_client->cl_firststate = 1;
}
/* Should we give out recallable state?: */
@ -2782,11 +2788,11 @@ static void
nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_stateid *stp)
{
struct nfs4_delegation *dp;
struct nfs4_stateowner *sop = stp->st_stateowner;
struct nfs4_openowner *oo = container_of(stp->st_stateowner, struct nfs4_openowner, oo_owner);
int cb_up;
int status, flag = 0;
cb_up = nfsd4_cb_channel_good(sop->so_client);
cb_up = nfsd4_cb_channel_good(oo->oo_owner.so_client);
flag = NFS4_OPEN_DELEGATE_NONE;
open->op_recall = 0;
switch (open->op_claim_type) {
@ -2802,7 +2808,7 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
* had the chance to reclaim theirs.... */
if (locks_in_grace())
goto out;
if (!cb_up || !sop->so_confirmed)
if (!cb_up || !oo->oo_confirmed)
goto out;
if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
flag = NFS4_OPEN_DELEGATE_WRITE;
@ -2813,7 +2819,7 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
goto out;
}
dp = alloc_init_deleg(sop->so_client, stp, fh, flag);
dp = alloc_init_deleg(oo->oo_owner.so_client, stp, fh, flag);
if (dp == NULL)
goto out_no_deleg;
status = nfs4_set_delegation(dp, flag);
@ -2901,7 +2907,7 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
memcpy(&open->op_stateid, &stp->st_stateid, sizeof(stateid_t));
if (nfsd4_has_session(&resp->cstate))
open->op_stateowner->so_confirmed = 1;
open->op_openowner->oo_confirmed = 1;
/*
* Attempt to hand out a delegation. No error return, because the
@ -2922,7 +2928,7 @@ out:
* To finish the open response, we just need to set the rflags.
*/
open->op_rflags = NFS4_OPEN_RESULT_LOCKTYPE_POSIX;
if (!open->op_stateowner->so_confirmed &&
if (!open->op_openowner->oo_confirmed &&
!nfsd4_has_session(&resp->cstate))
open->op_rflags |= NFS4_OPEN_RESULT_CONFIRM;
@ -2981,7 +2987,7 @@ static time_t
nfs4_laundromat(void)
{
struct nfs4_client *clp;
struct nfs4_stateowner *sop;
struct nfs4_openowner *oo;
struct nfs4_delegation *dp;
struct list_head *pos, *next, reaplist;
time_t cutoff = get_seconds() - nfsd4_lease;
@ -3038,16 +3044,16 @@ nfs4_laundromat(void)
}
test_val = nfsd4_lease;
list_for_each_safe(pos, next, &close_lru) {
sop = list_entry(pos, struct nfs4_stateowner, so_close_lru);
if (time_after((unsigned long)sop->so_time, (unsigned long)cutoff)) {
u = sop->so_time - cutoff;
oo = container_of(pos, struct nfs4_openowner, oo_close_lru);
if (time_after((unsigned long)oo->oo_time, (unsigned long)cutoff)) {
u = oo->oo_time - cutoff;
if (test_val > u)
test_val = u;
break;
}
dprintk("NFSD: purging unused open stateowner (so_id %d)\n",
sop->so_id);
release_openowner(sop);
oo->oo_owner.so_id);
release_openowner(oo);
}
if (clientid_val < NFSD_LAUNDROMAT_MINTIMEOUT)
clientid_val = NFSD_LAUNDROMAT_MINTIMEOUT;
@ -3069,13 +3075,12 @@ laundromat_main(struct work_struct *not_used)
queue_delayed_work(laundry_wq, &laundromat_work, t*HZ);
}
static struct nfs4_stateowner *
search_close_lru(u32 st_id)
static struct nfs4_openowner * search_close_lru(u32 st_id)
{
struct nfs4_stateowner *local;
struct nfs4_openowner *local;
list_for_each_entry(local, &close_lru, so_close_lru) {
if (local->so_id == st_id)
list_for_each_entry(local, &close_lru, oo_close_lru) {
if (local->oo_owner.so_id == st_id)
return local;
}
return NULL;
@ -3209,7 +3214,8 @@ __be32 nfs4_validate_stateid(stateid_t *stateid, bool has_session)
goto out;
status = nfserr_bad_stateid;
if (!stp->st_stateowner->so_confirmed)
if (stp->st_stateowner->so_is_open_owner
&& !openowner(stp->st_stateowner)->oo_confirmed)
goto out;
status = check_stateid_generation(stateid, &stp->st_stateid, has_session);
@ -3274,7 +3280,8 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
status = nfserr_bad_stateid;
if (nfs4_check_fh(current_fh, stp))
goto out;
if (!stp->st_stateowner->so_confirmed)
if (stp->st_stateowner->so_is_open_owner
&& !openowner(stp->st_stateowner)->oo_confirmed)
goto out;
status = check_stateid_generation(stateid, &stp->st_stateid,
nfsd4_has_session(cstate));
@ -3308,7 +3315,7 @@ nfsd4_free_delegation_stateid(stateid_t *stateid)
static __be32
nfsd4_free_lock_stateid(struct nfs4_stateid *stp)
{
if (check_for_locks(stp->st_file, stp->st_stateowner))
if (check_for_locks(stp->st_file, lockowner(stp->st_stateowner)))
return nfserr_locks_held;
release_lock_stateid(stp);
return nfs_ok;
@ -3417,7 +3424,8 @@ nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
if (status)
return status;
if (!sop->so_confirmed && !(flags & CONFIRM)) {
if (sop->so_is_open_owner && !openowner(sop)->oo_confirmed
&& !(flags & CONFIRM)) {
dprintk("NFSD: preprocess_seqid_op: stateowner not"
" confirmed yet!\n");
return nfserr_bad_stateid;
@ -3434,7 +3442,7 @@ nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_open_confirm *oc)
{
__be32 status;
struct nfs4_stateowner *sop;
struct nfs4_openowner *oo;
struct nfs4_stateid *stp;
dprintk("NFSD: nfsd4_open_confirm on file %.*s\n",
@ -3452,17 +3460,17 @@ nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
CONFIRM | OPEN_STATE, &stp);
if (status)
goto out;
sop = stp->st_stateowner;
oo = openowner(stp->st_stateowner);
status = nfserr_bad_stateid;
if (sop->so_confirmed)
if (oo->oo_confirmed)
goto out;
sop->so_confirmed = 1;
oo->oo_confirmed = 1;
update_stateid(&stp->st_stateid);
memcpy(&oc->oc_resp_stateid, &stp->st_stateid, sizeof(stateid_t));
dprintk("NFSD: %s: success, seqid=%d stateid=" STATEID_FMT "\n",
__func__, oc->oc_seqid, STATEID_VAL(&stp->st_stateid));
nfsd4_create_clid_dir(sop->so_client);
nfsd4_create_clid_dir(oo->oo_owner.so_client);
status = nfs_ok;
out:
if (!cstate->replay_owner)
@ -3513,7 +3521,6 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp,
&od->od_stateid, OPEN_STATE, &stp);
if (status)
goto out;
status = nfserr_inval;
if (!test_bit(od->od_share_access, &stp->st_access_bmap)) {
dprintk("NFSD:access not a subset current bitmap: 0x%lx, input access=%08x\n",
@ -3546,8 +3553,8 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_close *close)
{
__be32 status;
struct nfs4_openowner *oo;
struct nfs4_stateid *stp;
struct nfs4_stateowner *so;
dprintk("NFSD: nfsd4_close on file %.*s\n",
(int)cstate->current_fh.fh_dentry->d_name.len,
@ -3563,19 +3570,19 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
* Also, we should make sure this isn't just the result of
* a replayed close:
*/
so = search_close_lru(close->cl_stateid.si_stateownerid);
oo = search_close_lru(close->cl_stateid.si_stateownerid);
/* It's not stale; let's assume it's expired: */
if (so == NULL)
if (oo == NULL)
goto out;
cstate->replay_owner = so;
status = nfsd4_check_seqid(cstate, so, close->cl_seqid);
cstate->replay_owner = &oo->oo_owner;
status = nfsd4_check_seqid(cstate, &oo->oo_owner, close->cl_seqid);
if (status)
goto out;
status = nfserr_bad_seqid;
}
if (status)
goto out;
so = stp->st_stateowner;
oo = openowner(stp->st_stateowner);
status = nfs_ok;
update_stateid(&stp->st_stateid);
memcpy(&close->cl_stateid, &stp->st_stateid, sizeof(stateid_t));
@ -3587,8 +3594,8 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
* released by the laundromat service after the lease period
* to enable us to handle CLOSE replay
*/
if (list_empty(&so->so_stateids))
move_to_close_lru(so);
if (list_empty(&oo->oo_owner.so_stateids))
move_to_close_lru(oo);
out:
if (!cstate->replay_owner)
nfs4_unlock_state();
@ -3768,17 +3775,17 @@ static const struct lock_manager_operations nfsd_posix_mng_ops = {
static inline void
nfs4_set_lock_denied(struct file_lock *fl, struct nfsd4_lock_denied *deny)
{
struct nfs4_stateowner *sop;
struct nfs4_lockowner *lo;
if (fl->fl_lmops == &nfsd_posix_mng_ops) {
sop = (struct nfs4_stateowner *) fl->fl_owner;
deny->ld_owner.data = kmemdup(sop->so_owner.data,
sop->so_owner.len, GFP_KERNEL);
lo = (struct nfs4_lockowner *) fl->fl_owner;
deny->ld_owner.data = kmemdup(lo->lo_owner.so_owner.data,
lo->lo_owner.so_owner.len, GFP_KERNEL);
if (!deny->ld_owner.data)
/* We just don't care that much */
goto nevermind;
deny->ld_owner.len = sop->so_owner.len;
deny->ld_clientid = sop->so_client->cl_clientid;
deny->ld_owner.len = lo->lo_owner.so_owner.len;
deny->ld_clientid = lo->lo_owner.so_client->cl_clientid;
} else {
nevermind:
deny->ld_owner.len = 0;
@ -3795,8 +3802,8 @@ nevermind:
deny->ld_type = NFS4_WRITE_LT;
}
static struct nfs4_stateowner *
find_lockstateowner_str(struct inode *inode, clientid_t *clid,
static struct nfs4_lockowner *
find_lockowner_str(struct inode *inode, clientid_t *clid,
struct xdr_netobj *owner)
{
unsigned int hashval = lock_ownerstr_hashval(inode, clid->cl_id, owner);
@ -3804,19 +3811,19 @@ find_lockstateowner_str(struct inode *inode, clientid_t *clid,
list_for_each_entry(op, &lock_ownerstr_hashtbl[hashval], so_strhash) {
if (same_owner_str(op, owner, clid))
return op;
return lockowner(op);
}
return NULL;
}
static void hash_lockowner(struct nfs4_stateowner *sop, 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_stateid *open_stp)
{
unsigned int idhashval;
idhashval = lockownerid_hashval(sop->so_id);
list_add(&sop->so_idhash, &lock_ownerid_hashtbl[idhashval]);
list_add(&sop->so_strhash, &lock_ownerstr_hashtbl[strhashval]);
list_add(&sop->so_perstateid, &open_stp->st_lockowners);
idhashval = lockownerid_hashval(lo->lo_owner.so_id);
list_add(&lo->lo_owner.so_idhash, &lock_ownerid_hashtbl[idhashval]);
list_add(&lo->lo_owner.so_strhash, &lock_ownerstr_hashtbl[strhashval]);
list_add(&lo->lo_perstateid, &open_stp->st_lockowners);
}
/*
@ -3827,28 +3834,27 @@ static void hash_lockowner(struct nfs4_stateowner *sop, unsigned int strhashval,
* strhashval = lock_ownerstr_hashval
*/
static struct nfs4_stateowner *
static struct nfs4_lockowner *
alloc_init_lock_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfs4_stateid *open_stp, struct nfsd4_lock *lock) {
struct nfs4_stateowner *sop;
struct nfs4_lockowner *lo;
sop = alloc_stateowner(&lock->lk_new_owner, clp);
if (!sop)
lo = alloc_stateowner(lockowner_slab, &lock->lk_new_owner, clp);
if (!lo)
return NULL;
INIT_LIST_HEAD(&sop->so_stateids);
sop->so_is_open_owner = 0;
INIT_LIST_HEAD(&lo->lo_owner.so_stateids);
lo->lo_owner.so_is_open_owner = 0;
/* It is the openowner seqid that will be incremented in encode in the
* case of new lockowners; so increment the lock seqid manually: */
sop->so_seqid = lock->lk_new_lock_seqid + 1;
sop->so_confirmed = 1;
hash_lockowner(sop, strhashval, clp, open_stp);
return sop;
lo->lo_owner.so_seqid = lock->lk_new_lock_seqid + 1;
hash_lockowner(lo, strhashval, clp, open_stp);
return lo;
}
static struct nfs4_stateid *
alloc_init_lock_stateid(struct nfs4_stateowner *sop, struct nfs4_file *fp, struct nfs4_stateid *open_stp)
alloc_init_lock_stateid(struct nfs4_lockowner *lo, struct nfs4_file *fp, struct nfs4_stateid *open_stp)
{
struct nfs4_stateid *stp;
unsigned int hashval = stateid_hashval(sop->so_id, fp->fi_id);
unsigned int hashval = stateid_hashval(lo->lo_owner.so_id, fp->fi_id);
stp = nfs4_alloc_stateid();
if (stp == NULL)
@ -3859,13 +3865,13 @@ alloc_init_lock_stateid(struct nfs4_stateowner *sop, struct nfs4_file *fp, struc
INIT_LIST_HEAD(&stp->st_lockowners); /* not used */
list_add(&stp->st_hash, &stateid_hashtbl[hashval]);
list_add(&stp->st_perfile, &fp->fi_stateids);
list_add(&stp->st_perstateowner, &sop->so_stateids);
stp->st_stateowner = sop;
list_add(&stp->st_perstateowner, &lo->lo_owner.so_stateids);
stp->st_stateowner = &lo->lo_owner;
stp->st_type = NFS4_LOCK_STID;
get_nfs4_file(fp);
stp->st_file = fp;
stp->st_stateid.si_boot = boot_time;
stp->st_stateid.si_stateownerid = sop->so_id;
stp->st_stateid.si_stateownerid = lo->lo_owner.so_id;
stp->st_stateid.si_fileid = fp->fi_id;
/* note will be incremented before first return to client: */
stp->st_stateid.si_generation = 0;
@ -3902,8 +3908,8 @@ __be32
nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_lock *lock)
{
struct nfs4_stateowner *open_sop = NULL;
struct nfs4_stateowner *lock_sop = NULL;
struct nfs4_openowner *open_sop = NULL;
struct nfs4_lockowner *lock_sop = NULL;
struct nfs4_stateid *lock_stp;
struct nfs4_file *fp;
struct file *filp = NULL;
@ -3949,23 +3955,23 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
OPEN_STATE, &open_stp);
if (status)
goto out;
open_sop = openowner(open_stp->st_stateowner);
status = nfserr_bad_stateid;
open_sop = open_stp->st_stateowner;
if (!nfsd4_has_session(cstate) &&
!same_clid(&open_sop->so_client->cl_clientid,
!same_clid(&open_sop->oo_owner.so_client->cl_clientid,
&lock->v.new.clientid))
goto out;
/* create lockowner and lock stateid */
fp = open_stp->st_file;
strhashval = lock_ownerstr_hashval(fp->fi_inode,
open_sop->so_client->cl_clientid.cl_id,
strhashval = lock_ownerstr_hashval(fp->fi_inode,
open_sop->oo_owner.so_client->cl_clientid.cl_id,
&lock->v.new.owner);
/* XXX: Do we need to check for duplicate stateowners on
* the same file, or should they just be allowed (and
* create new stateids)? */
status = nfserr_jukebox;
lock_sop = alloc_init_lock_stateowner(strhashval,
open_sop->so_client, open_stp, lock);
open_sop->oo_owner.so_client, open_stp, lock);
if (lock_sop == NULL)
goto out;
lock_stp = alloc_init_lock_stateid(lock_sop, fp, open_stp);
@ -3974,12 +3980,12 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
} else {
/* lock (lock owner + lock stateid) already exists */
status = nfs4_preprocess_seqid_op(cstate,
lock->lk_old_lock_seqid,
&lock->lk_old_lock_stateid,
lock->lk_old_lock_seqid,
&lock->lk_old_lock_stateid,
LOCK_STATE, &lock_stp);
if (status)
goto out;
lock_sop = lock_stp->st_stateowner;
lock_sop = lockowner(lock_stp->st_stateowner);
fp = lock_stp->st_file;
}
/* lock_sop and lock_stp have been created or found */
@ -4092,7 +4098,7 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
{
struct inode *inode;
struct file_lock file_lock;
struct nfs4_stateowner *so;
struct nfs4_lockowner *lo;
int error;
__be32 status;
@ -4128,10 +4134,9 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
goto out;
}
so = find_lockstateowner_str(inode,
&lockt->lt_clientid, &lockt->lt_owner);
if (so)
file_lock.fl_owner = (fl_owner_t)so;
lo = find_lockowner_str(inode, &lockt->lt_clientid, &lockt->lt_owner);
if (lo)
file_lock.fl_owner = (fl_owner_t)lo;
file_lock.fl_pid = current->tgid;
file_lock.fl_flags = FL_POSIX;
@ -4186,7 +4191,7 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
BUG_ON(!filp);
locks_init_lock(&file_lock);
file_lock.fl_type = F_UNLCK;
file_lock.fl_owner = (fl_owner_t) stp->st_stateowner;
file_lock.fl_owner = (fl_owner_t)lockowner(stp->st_stateowner);
file_lock.fl_pid = current->tgid;
file_lock.fl_file = filp;
file_lock.fl_flags = FL_POSIX;
@ -4225,7 +4230,7 @@ out_nfserr:
* 0: no locks held by lockowner
*/
static int
check_for_locks(struct nfs4_file *filp, struct nfs4_stateowner *lowner)
check_for_locks(struct nfs4_file *filp, struct nfs4_lockowner *lowner)
{
struct file_lock **flpp;
struct inode *inode = filp->fi_inode;
@ -4250,6 +4255,7 @@ 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 xdr_netobj *owner = &rlockowner->rl_owner;
struct list_head matches;
@ -4279,11 +4285,10 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
continue;
list_for_each_entry(stp, &sop->so_stateids,
st_perstateowner) {
if (check_for_locks(stp->st_file, sop))
lo = lockowner(sop);
if (check_for_locks(stp->st_file, lo))
goto out;
/* Note: so_perclient unused for lockowners,
* so it's OK to fool with here. */
list_add(&sop->so_perclient, &matches);
list_add(&lo->lo_list, &matches);
}
}
}
@ -4292,12 +4297,12 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
* have been checked. */
status = nfs_ok;
while (!list_empty(&matches)) {
sop = list_entry(matches.next, struct nfs4_stateowner,
so_perclient);
lo = list_entry(matches.next, struct nfs4_lockowner,
lo_list);
/* unhash_stateowner deletes so_perclient only
* for openowners. */
list_del(&sop->so_perclient);
release_lockowner(sop);
list_del(&lo->lo_list);
release_lockowner(lo);
}
out:
nfs4_unlock_state();

2
fs/nfsd/nfs4xdr.c
View File

@ -646,7 +646,7 @@ nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
memset(open->op_bmval, 0, sizeof(open->op_bmval));
open->op_iattr.ia_valid = 0;
open->op_stateowner = NULL;
open->op_openowner = NULL;
/* seqid, share_access, share_deny, clientid, ownerlen */
READ_BUF(16 + sizeof(clientid_t));

33
fs/nfsd/state.h
View File

@ -337,14 +337,11 @@ struct nfs4_replay {
* reaped (when so_perfilestate is empty) to hold the last close replay.
* reaped by laundramat thread after lease period.
*/
struct nfs4_stateowner {
struct list_head so_idhash; /* hash by so_id */
struct list_head so_strhash; /* hash by op_name */
struct list_head so_perclient;
struct list_head so_stateids;
struct list_head so_perstateid; /* for lockowners only */
struct list_head so_close_lru; /* tail queue */
time_t so_time; /* time of placement on so_close_lru */
int so_is_open_owner; /* 1=openowner,0=lockowner */
u32 so_id;
struct nfs4_client * so_client;
@ -352,10 +349,33 @@ struct nfs4_stateowner {
* sequence id expected from the client: */
u32 so_seqid;
struct xdr_netobj so_owner; /* open owner name */
int so_confirmed; /* successful OPEN_CONFIRM? */
struct nfs4_replay so_replay;
};
struct nfs4_openowner {
struct nfs4_stateowner oo_owner; /* must be first field */
struct list_head oo_perclient;
struct list_head oo_close_lru; /* tail queue */
time_t oo_time; /* time of placement on so_close_lru */
int oo_confirmed; /* successful OPEN_CONFIRM? */
};
struct nfs4_lockowner {
struct nfs4_stateowner lo_owner; /* must be first element */
struct list_head lo_perstateid; /* for lockowners only */
struct list_head lo_list; /* for temporary uses */
};
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);
}
/*
* nfs4_file: a file opened by some number of (open) nfs4_stateowners.
* o fi_perfile list is used to search for conflicting
@ -457,7 +477,8 @@ extern void nfs4_lock_state(void);
extern void nfs4_unlock_state(void);
extern int nfs4_in_grace(void);
extern __be32 nfs4_check_open_reclaim(clientid_t *clid);
extern void nfs4_free_stateowner(struct nfs4_stateowner *sop);
extern void nfs4_free_openowner(struct nfs4_openowner *);
extern void nfs4_free_lockowner(struct nfs4_lockowner *);
extern int set_callback_cred(void);
extern void nfsd4_probe_callback(struct nfs4_client *clp);
extern void nfsd4_probe_callback_sync(struct nfs4_client *clp);

2
fs/nfsd/xdr4.h
View File

@ -227,7 +227,7 @@ struct nfsd4_open {
struct nfsd4_change_info op_cinfo; /* response */
u32 op_rflags; /* response */
int op_truncate; /* used during processing */
struct nfs4_stateowner *op_stateowner; /* used during processing */
struct nfs4_openowner *op_openowner; /* used during processing */
struct nfs4_acl *op_acl;
};
#define op_iattr iattr