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Diffstat (limited to 'fs/nfsd/nfs4state.c')
-rw-r--r--fs/nfsd/nfs4state.c97
1 files changed, 49 insertions, 48 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index c06a1ba80d73..f6b2a09f793f 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -48,6 +48,7 @@
#include "current_stateid.h"
#include "netns.h"
+#include "pnfs.h"
#define NFSDDBG_FACILITY NFSDDBG_PROC
@@ -150,16 +151,6 @@ renew_client_locked(struct nfs4_client *clp)
clp->cl_time = get_seconds();
}
-static inline void
-renew_client(struct nfs4_client *clp)
-{
- struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id);
-
- spin_lock(&nn->client_lock);
- renew_client_locked(clp);
- spin_unlock(&nn->client_lock);
-}
-
static void put_client_renew_locked(struct nfs4_client *clp)
{
struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id);
@@ -282,7 +273,7 @@ static void nfsd4_free_file_rcu(struct rcu_head *rcu)
kmem_cache_free(file_slab, fp);
}
-static inline void
+void
put_nfs4_file(struct nfs4_file *fi)
{
might_lock(&state_lock);
@@ -295,12 +286,6 @@ put_nfs4_file(struct nfs4_file *fi)
}
}
-static inline void
-get_nfs4_file(struct nfs4_file *fi)
-{
- atomic_inc(&fi->fi_ref);
-}
-
static struct file *
__nfs4_get_fd(struct nfs4_file *f, int oflag)
{
@@ -358,7 +343,7 @@ find_readable_file(struct nfs4_file *f)
return ret;
}
-static struct file *
+struct file *
find_any_file(struct nfs4_file *f)
{
struct file *ret;
@@ -408,14 +393,6 @@ static unsigned int file_hashval(struct knfsd_fh *fh)
return nfsd_fh_hashval(fh) & (FILE_HASH_SIZE - 1);
}
-static bool nfsd_fh_match(struct knfsd_fh *fh1, struct knfsd_fh *fh2)
-{
- return fh1->fh_size == fh2->fh_size &&
- !memcmp(fh1->fh_base.fh_pad,
- fh2->fh_base.fh_pad,
- fh1->fh_size);
-}
-
static struct hlist_head file_hashtbl[FILE_HASH_SIZE];
static void
@@ -494,7 +471,7 @@ static void nfs4_file_put_access(struct nfs4_file *fp, u32 access)
__nfs4_file_put_access(fp, O_RDONLY);
}
-static struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl,
+struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl,
struct kmem_cache *slab)
{
struct nfs4_stid *stid;
@@ -688,17 +665,17 @@ static void nfs4_put_deleg_lease(struct nfs4_file *fp)
struct file *filp = NULL;
spin_lock(&fp->fi_lock);
- if (fp->fi_deleg_file && atomic_dec_and_test(&fp->fi_delegees))
+ if (fp->fi_deleg_file && --fp->fi_delegees == 0)
swap(filp, fp->fi_deleg_file);
spin_unlock(&fp->fi_lock);
if (filp) {
- vfs_setlease(filp, F_UNLCK, NULL, NULL);
+ vfs_setlease(filp, F_UNLCK, NULL, (void **)&fp);
fput(filp);
}
}
-static void unhash_stid(struct nfs4_stid *s)
+void nfs4_unhash_stid(struct nfs4_stid *s)
{
s->sc_type = 0;
}
@@ -1006,7 +983,7 @@ static void unhash_lock_stateid(struct nfs4_ol_stateid *stp)
list_del_init(&stp->st_locks);
unhash_ol_stateid(stp);
- unhash_stid(&stp->st_stid);
+ nfs4_unhash_stid(&stp->st_stid);
}
static void release_lock_stateid(struct nfs4_ol_stateid *stp)
@@ -1518,7 +1495,12 @@ unhash_session(struct nfsd4_session *ses)
static int
STALE_CLIENTID(clientid_t *clid, struct nfsd_net *nn)
{
- if (clid->cl_boot == nn->boot_time)
+ /*
+ * We're assuming the clid was not given out from a boot
+ * precisely 2^32 (about 136 years) before this one. That seems
+ * a safe assumption:
+ */
+ if (clid->cl_boot == (u32)nn->boot_time)
return 0;
dprintk("NFSD stale clientid (%08x/%08x) boot_time %08lx\n",
clid->cl_boot, clid->cl_id, nn->boot_time);
@@ -1558,6 +1540,9 @@ static struct nfs4_client *alloc_client(struct xdr_netobj name)
INIT_LIST_HEAD(&clp->cl_lru);
INIT_LIST_HEAD(&clp->cl_callbacks);
INIT_LIST_HEAD(&clp->cl_revoked);
+#ifdef CONFIG_NFSD_PNFS
+ INIT_LIST_HEAD(&clp->cl_lo_states);
+#endif
spin_lock_init(&clp->cl_lock);
rpc_init_wait_queue(&clp->cl_cb_waitq, "Backchannel slot table");
return clp;
@@ -1662,6 +1647,7 @@ __destroy_client(struct nfs4_client *clp)
nfs4_get_stateowner(&oo->oo_owner);
release_openowner(oo);
}
+ nfsd4_return_all_client_layouts(clp);
nfsd4_shutdown_callback(clp);
if (clp->cl_cb_conn.cb_xprt)
svc_xprt_put(clp->cl_cb_conn.cb_xprt);
@@ -2145,8 +2131,11 @@ nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
static void
nfsd4_set_ex_flags(struct nfs4_client *new, struct nfsd4_exchange_id *clid)
{
- /* pNFS is not supported */
+#ifdef CONFIG_NFSD_PNFS
+ new->cl_exchange_flags |= EXCHGID4_FLAG_USE_PNFS_MDS;
+#else
new->cl_exchange_flags |= EXCHGID4_FLAG_USE_NON_PNFS;
+#endif
/* Referrals are supported, Migration is not. */
new->cl_exchange_flags |= EXCHGID4_FLAG_SUPP_MOVED_REFER;
@@ -3074,6 +3063,10 @@ static void nfsd4_init_file(struct knfsd_fh *fh, unsigned int hashval,
fp->fi_share_deny = 0;
memset(fp->fi_fds, 0, sizeof(fp->fi_fds));
memset(fp->fi_access, 0, sizeof(fp->fi_access));
+#ifdef CONFIG_NFSD_PNFS
+ INIT_LIST_HEAD(&fp->fi_lo_states);
+ atomic_set(&fp->fi_lo_recalls, 0);
+#endif
hlist_add_head_rcu(&fp->fi_hash, &file_hashtbl[hashval]);
}
@@ -3300,7 +3293,7 @@ find_file_locked(struct knfsd_fh *fh, unsigned int hashval)
struct nfs4_file *fp;
hlist_for_each_entry_rcu(fp, &file_hashtbl[hashval], fi_hash) {
- if (nfsd_fh_match(&fp->fi_fhandle, fh)) {
+ if (fh_match(&fp->fi_fhandle, fh)) {
if (atomic_inc_not_zero(&fp->fi_ref))
return fp;
}
@@ -3308,7 +3301,7 @@ find_file_locked(struct knfsd_fh *fh, unsigned int hashval)
return NULL;
}
-static struct nfs4_file *
+struct nfs4_file *
find_file(struct knfsd_fh *fh)
{
struct nfs4_file *fp;
@@ -3477,7 +3470,8 @@ nfsd_break_deleg_cb(struct file_lock *fl)
}
static int
-nfsd_change_deleg_cb(struct file_lock **onlist, int arg, struct list_head *dispose)
+nfsd_change_deleg_cb(struct file_lock *onlist, int arg,
+ struct list_head *dispose)
{
if (arg & F_UNLCK)
return lease_modify(onlist, arg, dispose);
@@ -3855,12 +3849,12 @@ static int nfs4_setlease(struct nfs4_delegation *dp)
/* Race breaker */
if (fp->fi_deleg_file) {
status = 0;
- atomic_inc(&fp->fi_delegees);
+ ++fp->fi_delegees;
hash_delegation_locked(dp, fp);
goto out_unlock;
}
fp->fi_deleg_file = filp;
- atomic_set(&fp->fi_delegees, 1);
+ fp->fi_delegees = 1;
hash_delegation_locked(dp, fp);
spin_unlock(&fp->fi_lock);
spin_unlock(&state_lock);
@@ -3901,7 +3895,7 @@ nfs4_set_delegation(struct nfs4_client *clp, struct svc_fh *fh,
status = -EAGAIN;
goto out_unlock;
}
- atomic_inc(&fp->fi_delegees);
+ ++fp->fi_delegees;
hash_delegation_locked(dp, fp);
status = 0;
out_unlock:
@@ -4294,7 +4288,7 @@ laundromat_main(struct work_struct *laundry)
static inline __be32 nfs4_check_fh(struct svc_fh *fhp, struct nfs4_ol_stateid *stp)
{
- if (!nfsd_fh_match(&fhp->fh_handle, &stp->st_stid.sc_file->fi_fhandle))
+ if (!fh_match(&fhp->fh_handle, &stp->st_stid.sc_file->fi_fhandle))
return nfserr_bad_stateid;
return nfs_ok;
}
@@ -4445,7 +4439,7 @@ out_unlock:
return status;
}
-static __be32
+__be32
nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
stateid_t *stateid, unsigned char typemask,
struct nfs4_stid **s, struct nfsd_net *nn)
@@ -4859,6 +4853,9 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
update_stateid(&stp->st_stid.sc_stateid);
memcpy(&close->cl_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
+ nfsd4_return_all_file_layouts(stp->st_stateowner->so_client,
+ stp->st_stid.sc_file);
+
nfsd4_close_open_stateid(stp);
/* put reference from nfs4_preprocess_seqid_op */
@@ -5556,10 +5553,11 @@ out_nfserr:
static bool
check_for_locks(struct nfs4_file *fp, struct nfs4_lockowner *lowner)
{
- struct file_lock **flpp;
+ struct file_lock *fl;
int status = false;
struct file *filp = find_any_file(fp);
struct inode *inode;
+ struct file_lock_context *flctx;
if (!filp) {
/* Any valid lock stateid should have some sort of access */
@@ -5568,15 +5566,18 @@ check_for_locks(struct nfs4_file *fp, struct nfs4_lockowner *lowner)
}
inode = file_inode(filp);
+ flctx = inode->i_flctx;
- spin_lock(&inode->i_lock);
- for (flpp = &inode->i_flock; *flpp != NULL; flpp = &(*flpp)->fl_next) {
- if ((*flpp)->fl_owner == (fl_owner_t)lowner) {
- status = true;
- break;
+ if (flctx && !list_empty_careful(&flctx->flc_posix)) {
+ spin_lock(&flctx->flc_lock);
+ list_for_each_entry(fl, &flctx->flc_posix, fl_list) {
+ if (fl->fl_owner == (fl_owner_t)lowner) {
+ status = true;
+ break;
+ }
}
+ spin_unlock(&flctx->flc_lock);
}
- spin_unlock(&inode->i_lock);
fput(filp);
return status;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.