diff options
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/callback_proc.c | 17 | ||||
| -rw-r--r-- | fs/nfs/nfs42proc.c | 22 | ||||
| -rw-r--r-- | fs/nfs/nfs4client.c | 15 |
3 files changed, 49 insertions, 5 deletions
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index acdda259912e..cd733649646b 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -681,11 +681,12 @@ __be32 nfs4_callback_offload(void *data, void *dummy, struct cb_offloadargs *args = data; struct nfs_server *server; struct nfs4_copy_state *copy; + bool found = false; + spin_lock(&cps->clp->cl_lock); rcu_read_lock(); list_for_each_entry_rcu(server, &cps->clp->cl_superblocks, client_link) { - spin_lock(&server->nfs_client->cl_lock); list_for_each_entry(copy, &server->ss_copies, copies) { if (memcmp(args->coa_stateid.other, copy->stateid.other, @@ -693,13 +694,23 @@ __be32 nfs4_callback_offload(void *data, void *dummy, continue; nfs4_copy_cb_args(copy, args); complete(©->completion); - spin_unlock(&server->nfs_client->cl_lock); + found = true; goto out; } - spin_unlock(&server->nfs_client->cl_lock); } out: rcu_read_unlock(); + if (!found) { + copy = kzalloc(sizeof(struct nfs4_copy_state), GFP_NOFS); + if (!copy) { + spin_unlock(&cps->clp->cl_lock); + return htonl(NFS4ERR_SERVERFAULT); + } + memcpy(©->stateid, &args->coa_stateid, NFS4_STATEID_SIZE); + nfs4_copy_cb_args(copy, args); + list_add_tail(©->copies, &cps->clp->pending_cb_stateids); + } + spin_unlock(&cps->clp->cl_lock); return 0; } diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index 023aea8f6cf1..c7d31f72070e 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -138,14 +138,31 @@ static int handle_async_copy(struct nfs42_copy_res *res, { struct nfs4_copy_state *copy; int status = NFS4_OK; + bool found_pending = false; + + spin_lock(&server->nfs_client->cl_lock); + list_for_each_entry(copy, &server->nfs_client->pending_cb_stateids, + copies) { + if (memcmp(&res->write_res.stateid, ©->stateid, + NFS4_STATEID_SIZE)) + continue; + found_pending = true; + list_del(©->copies); + break; + } + if (found_pending) { + spin_unlock(&server->nfs_client->cl_lock); + goto out; + } copy = kzalloc(sizeof(struct nfs4_copy_state), GFP_NOFS); - if (!copy) + if (!copy) { + spin_unlock(&server->nfs_client->cl_lock); return -ENOMEM; + } memcpy(©->stateid, &res->write_res.stateid, NFS4_STATEID_SIZE); init_completion(©->completion); - spin_lock(&server->nfs_client->cl_lock); list_add_tail(©->copies, &server->ss_copies); spin_unlock(&server->nfs_client->cl_lock); @@ -153,6 +170,7 @@ static int handle_async_copy(struct nfs42_copy_res *res, spin_lock(&server->nfs_client->cl_lock); list_del_init(©->copies); spin_unlock(&server->nfs_client->cl_lock); +out: res->write_res.count = copy->count; memcpy(&res->write_res.verifier, ©->verf, sizeof(copy->verf)); status = -copy->error; diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index d7124fb12041..146e30862234 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -156,9 +156,23 @@ nfs4_shutdown_ds_clients(struct nfs_client *clp) } } +static void +nfs4_cleanup_callback(struct nfs_client *clp) +{ + struct nfs4_copy_state *cp_state; + + while (!list_empty(&clp->pending_cb_stateids)) { + cp_state = list_entry(clp->pending_cb_stateids.next, + struct nfs4_copy_state, copies); + list_del(&cp_state->copies); + kfree(cp_state); + } +} + void nfs41_shutdown_client(struct nfs_client *clp) { if (nfs4_has_session(clp)) { + nfs4_cleanup_callback(clp); nfs4_shutdown_ds_clients(clp); nfs4_destroy_session(clp->cl_session); nfs4_destroy_clientid(clp); @@ -202,6 +216,7 @@ struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *cl_init) #if IS_ENABLED(CONFIG_NFS_V4_1) init_waitqueue_head(&clp->cl_lock_waitq); #endif + INIT_LIST_HEAD(&clp->pending_cb_stateids); return clp; error: |