From: Benny Halevy <bhalevy@xxxxxxxxxxxxxxx>
Signed-off-by: Benny Halevy <bhalevy@xxxxxxxxxxxxxxx>
---
fs/nfsd/nfs4state.c | 55 +++++++++++++++++++++++++++--------------------------
1 file changed, 28 insertions(+), 27 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 841495aa9170..34273ca482c3 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 = NULL;
static struct kmem_cache *lockowner_slab = NULL;
@@ -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);
}
@@ -436,10 +436,10 @@ static void
unhash_delegation(struct nfs4_delegation *dp)
{
list_del_init(&dp->dl_perclnt);
- spin_lock(&recall_lock);
+ spin_lock(&state_lock);
list_del_init(&dp->dl_perfile);
list_del_init(&dp->dl_recall_lru);
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
nfs4_put_deleg_lease(dp->dl_file);
put_nfs4_file(dp->dl_file);
dp->dl_file = NULL;
@@ -1136,13 +1136,13 @@ 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);
@@ -2499,9 +2499,9 @@ 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);
}
static void
@@ -2685,15 +2685,15 @@ 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;
}
@@ -2730,6 +2730,7 @@ 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
@@ -2766,11 +2767,11 @@ 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
@@ -3072,15 +3073,15 @@ static int nfs4_set_delegation(struct nfs4_delegation *dp, struct nfs4_file *fp)
goto out_free;
return 0;
}
- spin_lock(&recall_lock);
+ spin_lock(&state_lock);
if (fp->fi_had_conflict) {
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
status = -EAGAIN;
goto out_free;
}
atomic_inc(&fp->fi_delegees);
list_add(&dp->dl_perfile, &fp->fi_delegations);
- spin_unlock(&recall_lock);
+ spin_unlock(&state_lock);
list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations);
return 0;
out_free:
@@ -3422,7 +3423,7 @@ 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);
@@ -4900,9 +4901,9 @@ 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);
@@ -4916,11 +4917,11 @@ 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;
}
@@ -4929,9 +4930,9 @@ 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;
@@ -5149,12 +5150,12 @@ 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);
--
1.9.0
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
