From: Benny Halevy <bhalevy@xxxxxxxxxxxxxxx>
...as the name is a bit more descriptive and we've started using it for
other purposes.
Signed-off-by: Benny Halevy <bhalevy@xxxxxxxxxxxxxxx>
---
fs/nfsd/nfs4state.c | 63 +++++++++++++++++++++++++++--------------------------
1 file changed, 32 insertions(+), 31 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 96bdd90b96b1..040000de3732 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -81,7 +81,7 @@ static DEFINE_MUTEX(client_mutex);
* effort to decrease the scope of the client_mutex, this spinlock may
* eventually cover more:
*/
-static DEFINE_SPINLOCK(recall_lock);
+static DEFINE_SPINLOCK(state_lock);
static struct kmem_cache *openowner_slab;
static struct kmem_cache *lockowner_slab;
@@ -235,9 +235,9 @@ static void nfsd4_free_file(struct nfs4_file *f)
static inline void
put_nfs4_file(struct nfs4_file *fi)
{
- if (atomic_dec_and_lock(&fi->fi_ref, &recall_lock)) {
+ if (atomic_dec_and_lock(&fi->fi_ref, &state_lock)) {
hlist_del(&fi->fi_hash);
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
iput(fi->fi_inode);
nfsd4_free_file(fi);
}
@@ -436,7 +436,7 @@ static void unhash_stid(struct nfs4_stid *s)
static void
hash_delegation_locked(struct nfs4_delegation *dp, struct nfs4_file *fp)
{
- lockdep_assert_held(&recall_lock);
+ lockdep_assert_held(&state_lock);
list_add(&dp->dl_perfile, &fp->fi_delegations);
list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations);
@@ -446,11 +446,11 @@ hash_delegation_locked(struct nfs4_delegation *dp, struct nfs4_file *fp)
static void
unhash_delegation(struct nfs4_delegation *dp)
{
- spin_lock(&recall_lock);
+ spin_lock(&state_lock);
list_del_init(&dp->dl_perclnt);
list_del_init(&dp->dl_perfile);
list_del_init(&dp->dl_recall_lru);
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
if (dp->dl_file) {
nfs4_put_deleg_lease(dp->dl_file);
put_nfs4_file(dp->dl_file);
@@ -1161,13 +1161,13 @@ destroy_client(struct nfs4_client *clp)
struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id);
INIT_LIST_HEAD(&reaplist);
- spin_lock(&recall_lock);
+ spin_lock(&state_lock);
while (!list_empty(&clp->cl_delegations)) {
dp = list_entry(clp->cl_delegations.next, struct nfs4_delegation, dl_perclnt);
list_del_init(&dp->dl_perclnt);
list_move(&dp->dl_recall_lru, &reaplist);
}
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
while (!list_empty(&reaplist)) {
dp = list_entry(reaplist.next, struct nfs4_delegation, dl_recall_lru);
destroy_delegation(dp);
@@ -2527,9 +2527,9 @@ static void nfsd4_init_file(struct nfs4_file *fp, struct inode *ino)
fp->fi_lease = NULL;
memset(fp->fi_fds, 0, sizeof(fp->fi_fds));
memset(fp->fi_access, 0, sizeof(fp->fi_access));
- spin_lock(&recall_lock);
+ spin_lock(&state_lock);
hlist_add_head(&fp->fi_hash, &file_hashtbl[hashval]);
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
}
void
@@ -2700,15 +2700,15 @@ find_file(struct inode *ino)
unsigned int hashval = file_hashval(ino);
struct nfs4_file *fp;
- spin_lock(&recall_lock);
+ spin_lock(&state_lock);
hlist_for_each_entry(fp, &file_hashtbl[hashval], fi_hash) {
if (fp->fi_inode == ino) {
get_nfs4_file(fp);
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
return fp;
}
}
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
return NULL;
}
@@ -2745,6 +2745,7 @@ static void nfsd_break_one_deleg(struct nfs4_delegation *dp)
struct nfs4_client *clp = dp->dl_stid.sc_client;
struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id);
+ lockdep_assert_held(&state_lock);
/* We're assuming the state code never drops its reference
* without first removing the lease. Since we're in this lease
* callback (and since the lease code is serialized by the kernel
@@ -2781,11 +2782,11 @@ static void nfsd_break_deleg_cb(struct file_lock *fl)
*/
fl->fl_break_time = 0;
- spin_lock(&recall_lock);
+ spin_lock(&state_lock);
fp->fi_had_conflict = true;
list_for_each_entry(dp, &fp->fi_delegations, dl_perfile)
nfsd_break_one_deleg(dp);
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
}
static
@@ -3065,9 +3066,9 @@ static int nfs4_setlease(struct nfs4_delegation *dp)
fp->fi_lease = fl;
fp->fi_deleg_file = get_file(fl->fl_file);
atomic_set(&fp->fi_delegees, 1);
- spin_lock(&recall_lock);
+ spin_lock(&state_lock);
hash_delegation_locked(dp, fp);
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
return 0;
out_free:
locks_free_lock(fl);
@@ -3082,14 +3083,14 @@ static int nfs4_set_delegation(struct nfs4_delegation *dp, struct nfs4_file *fp)
dp->dl_file = fp;
if (!fp->fi_lease)
return nfs4_setlease(dp);
- spin_lock(&recall_lock);
+ spin_lock(&state_lock);
atomic_inc(&fp->fi_delegees);
if (fp->fi_had_conflict) {
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
return -EAGAIN;
}
hash_delegation_locked(dp, fp);
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
return 0;
}
@@ -3423,7 +3424,7 @@ nfs4_laundromat(struct nfsd_net *nn)
clp->cl_clientid.cl_id);
expire_client(clp);
}
- spin_lock(&recall_lock);
+ spin_lock(&state_lock);
list_for_each_safe(pos, next, &nn->del_recall_lru) {
dp = list_entry (pos, struct nfs4_delegation, dl_recall_lru);
if (net_generic(dp->dl_stid.sc_client->net, nfsd_net_id) != nn)
@@ -3435,7 +3436,7 @@ nfs4_laundromat(struct nfsd_net *nn)
}
list_move(&dp->dl_recall_lru, &reaplist);
}
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
list_for_each_safe(pos, next, &reaplist) {
dp = list_entry (pos, struct nfs4_delegation, dl_recall_lru);
revoke_delegation(dp);
@@ -4900,7 +4901,7 @@ static u64 nfsd_find_all_delegations(struct nfs4_client *clp, u64 max,
struct nfs4_delegation *dp, *next;
u64 count = 0;
- lockdep_assert_held(&recall_lock);
+ lockdep_assert_held(&state_lock);
list_for_each_entry_safe(dp, next, &clp->cl_delegations, dl_perclnt) {
if (victims)
list_move(&dp->dl_recall_lru, victims);
@@ -4916,9 +4917,9 @@ u64 nfsd_forget_client_delegations(struct nfs4_client *clp, u64 max)
LIST_HEAD(victims);
u64 count;
- spin_lock(&recall_lock);
+ spin_lock(&state_lock);
count = nfsd_find_all_delegations(clp, max, &victims);
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
list_for_each_entry_safe(dp, next, &victims, dl_recall_lru)
revoke_delegation(dp);
@@ -4932,11 +4933,11 @@ u64 nfsd_recall_client_delegations(struct nfs4_client *clp, u64 max)
LIST_HEAD(victims);
u64 count;
- spin_lock(&recall_lock);
+ spin_lock(&state_lock);
count = nfsd_find_all_delegations(clp, max, &victims);
list_for_each_entry_safe(dp, next, &victims, dl_recall_lru)
nfsd_break_one_deleg(dp);
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
return count;
}
@@ -4945,9 +4946,9 @@ u64 nfsd_print_client_delegations(struct nfs4_client *clp, u64 max)
{
u64 count = 0;
- spin_lock(&recall_lock);
+ spin_lock(&state_lock);
count = nfsd_find_all_delegations(clp, max, NULL);
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
nfsd_print_count(clp, count, "delegations");
return count;
@@ -5158,12 +5159,12 @@ nfs4_state_shutdown_net(struct net *net)
nfs4_lock_state();
INIT_LIST_HEAD(&reaplist);
- spin_lock(&recall_lock);
+ spin_lock(&state_lock);
list_for_each_safe(pos, next, &nn->del_recall_lru) {
dp = list_entry (pos, struct nfs4_delegation, dl_recall_lru);
list_move(&dp->dl_recall_lru, &reaplist);
}
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
list_for_each_safe(pos, next, &reaplist) {
dp = list_entry (pos, struct nfs4_delegation, dl_recall_lru);
destroy_delegation(dp);
--
1.9.3
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