#include <linux/nfsd/state.h>
#include <linux/nfsd/xdr4.h>
#include <linux/namei.h>
+#include <linux/swap.h>
#include <linux/mutex.h>
+#include <linux/lockd/bind.h>
+#include <linux/module.h>
#define NFSDDBG_FACILITY NFSDDBG_PROC
}
static int num_delegations;
+unsigned int max_delegations;
/*
* Open owner state (share locks)
struct nfs4_callback *cb = &stp->st_stateowner->so_client->cl_callback;
dprintk("NFSD alloc_init_deleg\n");
- if (num_delegations > STATEID_HASH_SIZE * 4)
+ if (fp->fi_had_conflict)
+ return NULL;
+ if (num_delegations > max_delegations)
return NULL;
dp = kmem_cache_alloc(deleg_slab, GFP_KERNEL);
if (dp == NULL)
/* The following nfsd_close may not actually close the file,
* but we want to remove the lease in any case. */
if (dp->dl_flock)
- setlease(filp, F_UNLCK, &dp->dl_flock);
+ vfs_setlease(filp, F_UNLCK, &dp->dl_flock);
nfsd_close(filp);
}
return clp;
}
+static void
+shutdown_callback_client(struct nfs4_client *clp)
+{
+ struct rpc_clnt *clnt = clp->cl_callback.cb_client;
+
+ /* shutdown rpc client, ending any outstanding recall rpcs */
+ if (clnt) {
+ clp->cl_callback.cb_client = NULL;
+ rpc_shutdown_client(clnt);
+ }
+}
+
static inline void
free_client(struct nfs4_client *clp)
{
+ shutdown_callback_client(clp);
if (clp->cl_cred.cr_group_info)
put_group_info(clp->cl_cred.cr_group_info);
kfree(clp->cl_name.data);
}
static void
-shutdown_callback_client(struct nfs4_client *clp)
-{
- struct rpc_clnt *clnt = clp->cl_callback.cb_client;
-
- /* shutdown rpc client, ending any outstanding recall rpcs */
- if (clnt) {
- clp->cl_callback.cb_client = NULL;
- rpc_shutdown_client(clnt);
- rpciod_down();
- }
-}
-
-static void
expire_client(struct nfs4_client *clp)
{
struct nfs4_stateowner *sop;
dprintk("NFSD: expire_client cl_count %d\n",
atomic_read(&clp->cl_count));
- shutdown_callback_client(clp);
-
INIT_LIST_HEAD(&reaplist);
spin_lock(&recall_lock);
while (!list_empty(&clp->cl_delegations)) {
}
static inline int
-same_name(const char *n1, const char *n2) {
+same_name(const char *n1, const char *n2)
+{
return 0 == memcmp(n1, n2, HEXDIR_LEN);
}
static int
-cmp_verf(nfs4_verifier *v1, nfs4_verifier *v2) {
- return(!memcmp(v1->data,v2->data,sizeof(v1->data)));
+same_verf(nfs4_verifier *v1, nfs4_verifier *v2)
+{
+ return 0 == memcmp(v1->data, v2->data, sizeof(v1->data));
}
static int
-cmp_clid(clientid_t * cl1, clientid_t * cl2) {
- return((cl1->cl_boot == cl2->cl_boot) &&
- (cl1->cl_id == cl2->cl_id));
+same_clid(clientid_t *cl1, clientid_t *cl2)
+{
+ return (cl1->cl_boot == cl2->cl_boot) && (cl1->cl_id == cl2->cl_id);
}
/* XXX what about NGROUP */
static int
-cmp_creds(struct svc_cred *cr1, struct svc_cred *cr2){
- return(cr1->cr_uid == cr2->cr_uid);
-
+same_creds(struct svc_cred *cr1, struct svc_cred *cr2)
+{
+ return cr1->cr_uid == cr2->cr_uid;
}
static void
clp->cl_clientid.cl_id = current_clientid++;
}
-static void
-gen_confirm(struct nfs4_client *clp) {
- struct timespec tv;
- u32 * p;
+static void gen_confirm(struct nfs4_client *clp)
+{
+ static u32 i;
+ u32 *p;
- tv = CURRENT_TIME;
p = (u32 *)clp->cl_confirm.data;
- *p++ = tv.tv_sec;
- *p++ = tv.tv_nsec;
+ *p++ = get_seconds();
+ *p++ = i++;
}
static int
if (name.len == 0)
return 0;
if (name.len > NFS4_OPAQUE_LIMIT) {
- printk("NFSD: check_name: name too long(%d)!\n", name.len);
+ dprintk("NFSD: check_name: name too long(%d)!\n", name.len);
return 0;
}
return 1;
unsigned int idhashval = clientid_hashval(clid->cl_id);
list_for_each_entry(clp, &conf_id_hashtbl[idhashval], cl_idhash) {
- if (cmp_clid(&clp->cl_clientid, clid))
+ if (same_clid(&clp->cl_clientid, clid))
return clp;
}
return NULL;
unsigned int idhashval = clientid_hashval(clid->cl_id);
list_for_each_entry(clp, &unconf_id_hashtbl[idhashval], cl_idhash) {
- if (cmp_clid(&clp->cl_clientid, clid))
+ if (same_clid(&clp->cl_clientid, clid))
return clp;
}
return NULL;
return;
}
-/*
- * RFC 3010 has a complex implmentation description of processing a
- * SETCLIENTID request consisting of 5 bullets, labeled as
- * CASE0 - CASE4 below.
- *
- * NOTES:
- * callback information will be processed in a future patch
- *
- * an unconfirmed record is added when:
- * NORMAL (part of CASE 4): there is no confirmed nor unconfirmed record.
- * CASE 1: confirmed record found with matching name, principal,
- * verifier, and clientid.
- * CASE 2: confirmed record found with matching name, principal,
- * and there is no unconfirmed record with matching
- * name and principal
- *
- * an unconfirmed record is replaced when:
- * CASE 3: confirmed record found with matching name, principal,
- * and an unconfirmed record is found with matching
- * name, principal, and with clientid and
- * confirm that does not match the confirmed record.
- * CASE 4: there is no confirmed record with matching name and
- * principal. there is an unconfirmed record with
- * matching name, principal.
- *
- * an unconfirmed record is deleted when:
- * CASE 1: an unconfirmed record that matches input name, verifier,
- * and confirmed clientid.
- * CASE 4: any unconfirmed records with matching name and principal
- * that exist after an unconfirmed record has been replaced
- * as described above.
- *
- */
__be32
nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_setclientid *setclid)
nfs4_lock_state();
conf = find_confirmed_client_by_str(dname, strhashval);
if (conf) {
- /*
- * CASE 0:
- * clname match, confirmed, different principal
- * or different ip_address
- */
+ /* RFC 3530 14.2.33 CASE 0: */
status = nfserr_clid_inuse;
- if (!cmp_creds(&conf->cl_cred, &rqstp->rq_cred)
+ if (!same_creds(&conf->cl_cred, &rqstp->rq_cred)
|| conf->cl_addr != sin->sin_addr.s_addr) {
dprintk("NFSD: setclientid: string in use by client"
"at %u.%u.%u.%u\n", NIPQUAD(conf->cl_addr));
goto out;
}
}
+ /*
+ * section 14.2.33 of RFC 3530 (under the heading "IMPLEMENTATION")
+ * has a description of SETCLIENTID request processing consisting
+ * of 5 bullet points, labeled as CASE0 - CASE4 below.
+ */
unconf = find_unconfirmed_client_by_str(dname, strhashval);
status = nfserr_resource;
if (!conf) {
- /*
- * CASE 4:
- * placed first, because it is the normal case.
+ /*
+ * RFC 3530 14.2.33 CASE 4:
+ * placed first, because it is the normal case
*/
if (unconf)
expire_client(unconf);
new = create_client(clname, dname);
if (new == NULL)
goto out;
- copy_verf(new, &clverifier);
- new->cl_addr = sin->sin_addr.s_addr;
- copy_cred(&new->cl_cred,&rqstp->rq_cred);
gen_clid(new);
- gen_confirm(new);
- gen_callback(new, setclid);
- add_to_unconfirmed(new, strhashval);
- } else if (cmp_verf(&conf->cl_verifier, &clverifier)) {
+ } else if (same_verf(&conf->cl_verifier, &clverifier)) {
/*
- * CASE 1:
- * cl_name match, confirmed, principal match
- * verifier match: probable callback update
- *
- * remove any unconfirmed nfs4_client with
- * matching cl_name, cl_verifier, and cl_clientid
- *
- * create and insert an unconfirmed nfs4_client with same
- * cl_name, cl_verifier, and cl_clientid as existing
- * nfs4_client, but with the new callback info and a
- * new cl_confirm
+ * RFC 3530 14.2.33 CASE 1:
+ * probable callback update
*/
if (unconf) {
/* Note this is removing unconfirmed {*x***},
new = create_client(clname, dname);
if (new == NULL)
goto out;
- copy_verf(new,&conf->cl_verifier);
- new->cl_addr = sin->sin_addr.s_addr;
- copy_cred(&new->cl_cred,&rqstp->rq_cred);
copy_clid(new, conf);
- gen_confirm(new);
- gen_callback(new, setclid);
- add_to_unconfirmed(new,strhashval);
} else if (!unconf) {
/*
- * CASE 2:
- * clname match, confirmed, principal match
- * verfier does not match
- * no unconfirmed. create a new unconfirmed nfs4_client
- * using input clverifier, clname, and callback info
- * and generate a new cl_clientid and cl_confirm.
+ * RFC 3530 14.2.33 CASE 2:
+ * probable client reboot; state will be removed if
+ * confirmed.
*/
new = create_client(clname, dname);
if (new == NULL)
goto out;
- copy_verf(new,&clverifier);
- new->cl_addr = sin->sin_addr.s_addr;
- copy_cred(&new->cl_cred,&rqstp->rq_cred);
gen_clid(new);
- gen_confirm(new);
- gen_callback(new, setclid);
- add_to_unconfirmed(new, strhashval);
- } else if (!cmp_verf(&conf->cl_confirm, &unconf->cl_confirm)) {
- /*
- * CASE3:
- * confirmed found (name, principal match)
- * confirmed verifier does not match input clverifier
- *
- * unconfirmed found (name match)
- * confirmed->cl_confirm != unconfirmed->cl_confirm
- *
- * remove unconfirmed.
- *
- * create an unconfirmed nfs4_client
- * with same cl_name as existing confirmed nfs4_client,
- * but with new callback info, new cl_clientid,
- * new cl_verifier and a new cl_confirm
+ } else {
+ /*
+ * RFC 3530 14.2.33 CASE 3:
+ * probable client reboot; state will be removed if
+ * confirmed.
*/
expire_client(unconf);
new = create_client(clname, dname);
if (new == NULL)
goto out;
- copy_verf(new,&clverifier);
- new->cl_addr = sin->sin_addr.s_addr;
- copy_cred(&new->cl_cred,&rqstp->rq_cred);
gen_clid(new);
- gen_confirm(new);
- gen_callback(new, setclid);
- add_to_unconfirmed(new, strhashval);
- } else {
- /* No cases hit !!! */
- status = nfserr_inval;
- goto out;
-
}
+ copy_verf(new, &clverifier);
+ new->cl_addr = sin->sin_addr.s_addr;
+ copy_cred(&new->cl_cred, &rqstp->rq_cred);
+ gen_confirm(new);
+ gen_callback(new, setclid);
+ add_to_unconfirmed(new, strhashval);
setclid->se_clientid.cl_boot = new->cl_clientid.cl_boot;
setclid->se_clientid.cl_id = new->cl_clientid.cl_id;
memcpy(setclid->se_confirm.data, new->cl_confirm.data, sizeof(setclid->se_confirm.data));
/*
- * RFC 3010 has a complex implmentation description of processing a
- * SETCLIENTID_CONFIRM request consisting of 4 bullets describing
- * processing on a DRC miss, labeled as CASE1 - CASE4 below.
- *
- * NOTE: callback information will be processed here in a future patch
+ * Section 14.2.34 of RFC 3530 (under the heading "IMPLEMENTATION") has
+ * a description of SETCLIENTID_CONFIRM request processing consisting of 4
+ * bullets, labeled as CASE1 - CASE4 below.
*/
__be32
nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
if (unconf && unconf->cl_addr != sin->sin_addr.s_addr)
goto out;
+ /*
+ * section 14.2.34 of RFC 3530 has a description of
+ * SETCLIENTID_CONFIRM request processing consisting
+ * of 4 bullet points, labeled as CASE1 - CASE4 below.
+ */
if ((conf && unconf) &&
- (cmp_verf(&unconf->cl_confirm, &confirm)) &&
- (cmp_verf(&conf->cl_verifier, &unconf->cl_verifier)) &&
- (same_name(conf->cl_recdir,unconf->cl_recdir)) &&
- (!cmp_verf(&conf->cl_confirm, &unconf->cl_confirm))) {
- /* CASE 1:
- * unconf record that matches input clientid and input confirm.
- * conf record that matches input clientid.
- * conf and unconf records match names, verifiers
- */
- if (!cmp_creds(&conf->cl_cred, &unconf->cl_cred))
+ (same_verf(&unconf->cl_confirm, &confirm)) &&
+ (!same_verf(&conf->cl_confirm, &unconf->cl_confirm))) {
+ /*
+ * RFC 3530 14.2.34 CASE 1:
+ * callback update
+ */
+ if (!same_creds(&conf->cl_cred, &unconf->cl_cred))
status = nfserr_clid_inuse;
else {
/* XXX: We just turn off callbacks until we can handle
status = nfs_ok;
}
- } else if ((conf && !unconf) ||
- ((conf && unconf) &&
- (!cmp_verf(&conf->cl_verifier, &unconf->cl_verifier) ||
- !same_name(conf->cl_recdir, unconf->cl_recdir)))) {
- /* CASE 2:
- * conf record that matches input clientid.
- * if unconf record matches input clientid, then
- * unconf->cl_name or unconf->cl_verifier don't match the
- * conf record.
+ } else if (conf && !unconf) {
+ /*
+ * RFC 3530 14.2.34 CASE 2:
+ * probable retransmitted request; play it safe and
+ * do nothing.
*/
- if (!cmp_creds(&conf->cl_cred,&rqstp->rq_cred))
+ if (!same_creds(&conf->cl_cred, &rqstp->rq_cred))
status = nfserr_clid_inuse;
else
status = nfs_ok;
} else if (!conf && unconf
- && cmp_verf(&unconf->cl_confirm, &confirm)) {
- /* CASE 3:
- * conf record not found.
- * unconf record found.
- * unconf->cl_confirm matches input confirm
+ && same_verf(&unconf->cl_confirm, &confirm)) {
+ /*
+ * RFC 3530 14.2.34 CASE 3:
+ * Normal case; new or rebooted client:
*/
- if (!cmp_creds(&unconf->cl_cred, &rqstp->rq_cred)) {
+ if (!same_creds(&unconf->cl_cred, &rqstp->rq_cred)) {
status = nfserr_clid_inuse;
} else {
unsigned int hash =
}
move_to_confirmed(unconf);
conf = unconf;
+ nfsd4_probe_callback(conf);
status = nfs_ok;
}
- } else if ((!conf || (conf && !cmp_verf(&conf->cl_confirm, &confirm)))
- && (!unconf || (unconf && !cmp_verf(&unconf->cl_confirm,
+ } else if ((!conf || (conf && !same_verf(&conf->cl_confirm, &confirm)))
+ && (!unconf || (unconf && !same_verf(&unconf->cl_confirm,
&confirm)))) {
- /* CASE 4:
- * conf record not found, or if conf, conf->cl_confirm does not
- * match input confirm.
- * unconf record not found, or if unconf, unconf->cl_confirm
- * does not match input confirm.
+ /*
+ * RFC 3530 14.2.34 CASE 4:
+ * Client probably hasn't noticed that we rebooted yet.
*/
status = nfserr_stale_clientid;
} else {
status = nfserr_clid_inuse;
}
out:
- if (!status)
- nfsd4_probe_callback(conf);
nfs4_unlock_state();
return status;
}
list_add(&fp->fi_hash, &file_hashtbl[hashval]);
fp->fi_inode = igrab(ino);
fp->fi_id = current_fileid++;
+ fp->fi_had_conflict = false;
return fp;
}
return NULL;
*slab = NULL;
}
-static void
+void
nfsd4_free_slabs(void)
{
nfsd4_free_slab(&stateowner_slab);
nfsd4_init_slabs(void)
{
stateowner_slab = kmem_cache_create("nfsd4_stateowners",
- sizeof(struct nfs4_stateowner), 0, 0, NULL, NULL);
+ sizeof(struct nfs4_stateowner), 0, 0, NULL);
if (stateowner_slab == NULL)
goto out_nomem;
file_slab = kmem_cache_create("nfsd4_files",
- sizeof(struct nfs4_file), 0, 0, NULL, NULL);
+ sizeof(struct nfs4_file), 0, 0, NULL);
if (file_slab == NULL)
goto out_nomem;
stateid_slab = kmem_cache_create("nfsd4_stateids",
- sizeof(struct nfs4_stateid), 0, 0, NULL, NULL);
+ sizeof(struct nfs4_stateid), 0, 0, NULL);
if (stateid_slab == NULL)
goto out_nomem;
deleg_slab = kmem_cache_create("nfsd4_delegations",
- sizeof(struct nfs4_delegation), 0, 0, NULL, NULL);
+ sizeof(struct nfs4_delegation), 0, 0, NULL);
if (deleg_slab == NULL)
goto out_nomem;
return 0;
}
static int
-cmp_owner_str(struct nfs4_stateowner *sop, struct xdr_netobj *owner, clientid_t *clid) {
- return ((sop->so_owner.len == owner->len) &&
- !memcmp(sop->so_owner.data, owner->data, owner->len) &&
- (sop->so_client->cl_clientid.cl_id == clid->cl_id));
+same_owner_str(struct nfs4_stateowner *sop, struct xdr_netobj *owner,
+ clientid_t *clid)
+{
+ return (sop->so_owner.len == owner->len) &&
+ 0 == memcmp(sop->so_owner.data, owner->data, owner->len) &&
+ (sop->so_client->cl_clientid.cl_id == clid->cl_id);
}
static struct nfs4_stateowner *
struct nfs4_stateowner *so = NULL;
list_for_each_entry(so, &ownerstr_hashtbl[hashval], so_strhash) {
- if (cmp_owner_str(so, &open->op_owner, &open->op_clientid))
+ if (same_owner_str(so, &open->op_owner, &open->op_clientid))
return so;
}
return NULL;
{
struct nfs4_delegation *dp = __dp;
- daemonize("nfsv4-recall");
-
+ dp->dl_file->fi_had_conflict = true;
nfsd4_cb_recall(dp);
return 0;
}
* lock) we know the server hasn't removed the lease yet, we know
* it's safe to take a reference: */
atomic_inc(&dp->dl_count);
+ atomic_inc(&dp->dl_client->cl_count);
spin_lock(&recall_lock);
list_add_tail(&dp->dl_recall_lru, &del_recall_lru);
/* only place dl_time is set. protected by lock_kernel*/
dp->dl_time = get_seconds();
- /* XXX need to merge NFSD_LEASE_TIME with fs/locks.c:lease_break_time */
- fl->fl_break_time = jiffies + NFSD_LEASE_TIME * HZ;
+ /*
+ * We don't want the locks code to timeout the lease for us;
+ * we'll remove it ourself if the delegation isn't returned
+ * in time.
+ */
+ fl->fl_break_time = 0;
t = kthread_run(do_recall, dp, "%s", "nfs4_cb_recall");
if (IS_ERR(t)) {
printk(KERN_INFO "NFSD: Callback thread failed for "
"for client (clientid %08x/%08x)\n",
clp->cl_clientid.cl_boot, clp->cl_clientid.cl_id);
+ put_nfs4_client(dp->dl_client);
nfs4_put_delegation(dp);
}
}
/*
* Set the delegation file_lock back pointer.
*
- * Called from __setlease() with lock_kernel() held.
+ * Called from setlease() with lock_kernel() held.
*/
static
void nfsd_copy_lock_deleg_cb(struct file_lock *new, struct file_lock *fl)
}
/*
- * Called from __setlease() with lock_kernel() held
+ * Called from setlease() with lock_kernel() held
*/
static
int nfsd_same_client_deleg_cb(struct file_lock *onlist, struct file_lock *try)
fl.fl_file = stp->st_vfs_file;
fl.fl_pid = current->tgid;
- /* setlease checks to see if delegation should be handed out.
+ /* vfs_setlease checks to see if delegation should be handed out.
* the lock_manager callbacks fl_mylease and fl_change are used
*/
- if ((status = setlease(stp->st_vfs_file,
+ if ((status = vfs_setlease(stp->st_vfs_file,
flag == NFS4_OPEN_DELEGATE_READ? F_RDLCK: F_WRLCK, &flp))) {
dprintk("NFSD: setlease failed [%d], no delegation\n", status);
unhash_delegation(dp);
if (open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS
&& flag == NFS4_OPEN_DELEGATE_NONE
&& open->op_delegate_type != NFS4_OPEN_DELEGATE_NONE)
- printk("NFSD: WARNING: refusing delegation reclaim\n");
+ dprintk("NFSD: WARNING: refusing delegation reclaim\n");
open->op_delegate_type = flag;
}
io_during_grace_disallowed(struct inode *inode, int flags)
{
return nfs4_in_grace() && (flags & (RD_STATE | WR_STATE))
- && MANDATORY_LOCK(inode);
+ && mandatory_lock(inode);
}
/*
*sopp = NULL;
if (ZERO_STATEID(stateid) || ONE_STATEID(stateid)) {
- printk("NFSD: preprocess_seqid_op: magic stateid!\n");
+ dprintk("NFSD: preprocess_seqid_op: magic stateid!\n");
return nfserr_bad_stateid;
}
lkflg = setlkflg(lock->lk_type);
if (lock->lk_is_new) {
- if (!sop->so_is_open_owner)
- return nfserr_bad_stateid;
- if (!cmp_clid(&clp->cl_clientid, lockclid))
+ if (!sop->so_is_open_owner)
+ return nfserr_bad_stateid;
+ if (!same_clid(&clp->cl_clientid, lockclid))
return nfserr_bad_stateid;
- /* stp is the open stateid */
- status = nfs4_check_openmode(stp, lkflg);
- if (status)
- return status;
- } else {
- /* stp is the lock stateid */
- status = nfs4_check_openmode(stp->st_openstp, lkflg);
- if (status)
- return status;
+ /* stp is the open stateid */
+ status = nfs4_check_openmode(stp, lkflg);
+ if (status)
+ return status;
+ } else {
+ /* stp is the lock stateid */
+ status = nfs4_check_openmode(stp->st_openstp, lkflg);
+ if (status)
+ return status;
}
-
}
if ((flags & CHECK_FH) && nfs4_check_fh(current_fh, stp)) {
- printk("NFSD: preprocess_seqid_op: fh-stateid mismatch!\n");
+ dprintk("NFSD: preprocess_seqid_op: fh-stateid mismatch!\n");
return nfserr_bad_stateid;
}
goto check_replay;
if (sop->so_confirmed && flags & CONFIRM) {
- printk("NFSD: preprocess_seqid_op: expected"
+ dprintk("NFSD: preprocess_seqid_op: expected"
" unconfirmed stateowner!\n");
return nfserr_bad_stateid;
}
if (!sop->so_confirmed && !(flags & CONFIRM)) {
- printk("NFSD: preprocess_seqid_op: stateowner not"
+ dprintk("NFSD: preprocess_seqid_op: stateowner not"
" confirmed yet!\n");
return nfserr_bad_stateid;
}
if (stateid->si_generation > stp->st_stateid.si_generation) {
- printk("NFSD: preprocess_seqid_op: future stateid?!\n");
+ dprintk("NFSD: preprocess_seqid_op: future stateid?!\n");
return nfserr_bad_stateid;
}
if (stateid->si_generation < stp->st_stateid.si_generation) {
- printk("NFSD: preprocess_seqid_op: old stateid!\n");
+ dprintk("NFSD: preprocess_seqid_op: old stateid!\n");
return nfserr_old_stateid;
}
renew_client(sop->so_client);
/* indicate replay to calling function */
return nfserr_replay_me;
}
- printk("NFSD: preprocess_seqid_op: bad seqid (expected %d, got %d)\n",
+ dprintk("NFSD: preprocess_seqid_op: bad seqid (expected %d, got %d)\n",
sop->so_seqid, seqid);
*sopp = NULL;
return nfserr_bad_seqid;
struct nfs4_stateowner *op;
list_for_each_entry(op, &lock_ownerstr_hashtbl[hashval], so_strhash) {
- if (cmp_owner_str(op, owner, clid))
+ if (same_owner_str(op, owner, clid))
return op;
}
return NULL;
/* XXX?: Just to divert the locks_release_private at the start of
* locks_copy_lock: */
locks_init_lock(&conflock);
- err = posix_lock_file(filp, &file_lock, &conflock);
+ err = vfs_lock_file(filp, cmd, &file_lock, &conflock);
switch (-err) {
case 0: /* success! */
update_stateid(&lock_stp->st_stateid);
status = nfserr_deadlock;
break;
default:
- dprintk("NFSD: nfsd4_lock: posix_lock_file_conf() failed! status %d\n",err);
+ dprintk("NFSD: nfsd4_lock: vfs_lock_file() failed! status %d\n",err);
status = nfserr_resource;
break;
}
struct inode *inode;
struct file file;
struct file_lock file_lock;
+ int error;
__be32 status;
if (nfs4_in_grace())
file_lock.fl_type = F_WRLCK;
break;
default:
- printk("NFSD: nfs4_lockt: bad lock type!\n");
+ dprintk("NFSD: nfs4_lockt: bad lock type!\n");
status = nfserr_inval;
goto out;
}
nfs4_transform_lock_offset(&file_lock);
- /* posix_test_lock uses the struct file _only_ to resolve the inode.
+ /* vfs_test_lock uses the struct file _only_ to resolve the inode.
* since LOCKT doesn't require an OPEN, and therefore a struct
- * file may not exist, pass posix_test_lock a struct file with
+ * file may not exist, pass vfs_test_lock a struct file with
* only the dentry:inode set.
*/
memset(&file, 0, sizeof (struct file));
file.f_path.dentry = cstate->current_fh.fh_dentry;
status = nfs_ok;
- posix_test_lock(&file, &file_lock);
+ error = vfs_test_lock(&file, &file_lock);
+ if (error) {
+ status = nfserrno(error);
+ goto out;
+ }
if (file_lock.fl_type != F_UNLCK) {
status = nfserr_denied;
nfs4_set_lock_denied(&file_lock, &lockt->lt_denied);
/*
* Try to unlock the file in the VFS.
*/
- err = posix_lock_file(filp, &file_lock, NULL);
+ err = vfs_lock_file(filp, F_SETLK, &file_lock, NULL);
if (err) {
- dprintk("NFSD: nfs4_locku: posix_lock_file failed!\n");
+ dprintk("NFSD: nfs4_locku: vfs_lock_file failed!\n");
goto out_nfserr;
}
/*
INIT_LIST_HEAD(&matches);
for (i = 0; i < LOCK_HASH_SIZE; i++) {
list_for_each_entry(sop, &lock_ownerid_hashtbl[i], so_idhash) {
- if (!cmp_owner_str(sop, owner, clid))
+ if (!same_owner_str(sop, owner, clid))
continue;
list_for_each_entry(stp, &sop->so_stateids,
st_perstateowner) {
/* initialization to perform at module load time: */
-void
+int
nfs4_state_init(void)
{
- int i;
+ int i, status;
+ status = nfsd4_init_slabs();
+ if (status)
+ return status;
for (i = 0; i < CLIENT_HASH_SIZE; i++) {
INIT_LIST_HEAD(&conf_id_hashtbl[i]);
INIT_LIST_HEAD(&conf_str_hashtbl[i]);
for (i = 0; i < CLIENT_HASH_SIZE; i++)
INIT_LIST_HEAD(&reclaim_str_hashtbl[i]);
reclaim_str_hashtbl_size = 0;
+ return 0;
}
static void
printk("NFSD: Failure reading reboot recovery data\n");
}
+unsigned long
+get_nfs4_grace_period(void)
+{
+ return max(user_lease_time, lease_time) * HZ;
+}
+
+/*
+ * Since the lifetime of a delegation isn't limited to that of an open, a
+ * client may quite reasonably hang on to a delegation as long as it has
+ * the inode cached. This becomes an obvious problem the first time a
+ * client's inode cache approaches the size of the server's total memory.
+ *
+ * For now we avoid this problem by imposing a hard limit on the number
+ * of delegations, which varies according to the server's memory size.
+ */
+static void
+set_max_delegations(void)
+{
+ /*
+ * Allow at most 4 delegations per megabyte of RAM. Quick
+ * estimates suggest that in the worst case (where every delegation
+ * is for a different inode), a delegation could take about 1.5K,
+ * giving a worst case usage of about 6% of memory.
+ */
+ max_delegations = nr_free_buffer_pages() >> (20 - 2 - PAGE_SHIFT);
+}
+
/* initialization to perform when the nfsd service is started: */
static void
__nfs4_state_start(void)
{
- time_t grace_time;
+ unsigned long grace_time;
boot_time = get_seconds();
- grace_time = max(user_lease_time, lease_time);
+ grace_time = get_nfs_grace_period();
lease_time = user_lease_time;
in_grace = 1;
- printk("NFSD: starting %ld-second grace period\n", grace_time);
+ printk(KERN_INFO "NFSD: starting %ld-second grace period\n",
+ grace_time/HZ);
laundry_wq = create_singlethread_workqueue("nfsd4");
- queue_delayed_work(laundry_wq, &laundromat_work, grace_time*HZ);
+ queue_delayed_work(laundry_wq, &laundromat_work, grace_time);
+ set_max_delegations();
}
-int
+void
nfs4_state_start(void)
{
- int status;
-
if (nfs4_init)
- return 0;
- status = nfsd4_init_slabs();
- if (status)
- return status;
+ return;
nfsd4_load_reboot_recovery_data();
__nfs4_state_start();
nfs4_init = 1;
- return 0;
+ return;
}
int
nfs4_lock_state();
nfs4_release_reclaim();
__nfs4_state_shutdown();
- nfsd4_free_slabs();
nfs4_unlock_state();
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff