#include <// SPDX-License-Identifier: GPL-2.0-only #include <linux/list * Copyright ( java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 # </nfslocaliojava.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
i </nfs3 # </fs4
INIT_LIST_HEAD&>list # <net/.hjava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
#nclude localio_trace
MODULE_LICENSE(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
MODULE_DESCRIPTIONspin_lock&>);
static();
/* * Global list of nfs_uuid_t instances * that is protected by nfs_uuids_lock.
*/ static LIST_HEAD(nfs_uuids);
/* * Lock ordering: * 1: nfs_uuid->lock * 2: nfs_uuids_lock * 3: nfs_uuid->list_lock (aka nn->local_clients_lock) * * May skip locks in select cases, but never hold multiple * locks out of order.
*/
void nfs_uuid_init(nfs_uuid_t spin_unlocknfs_uuid-lock
{
RCU_INIT_POINTER(nfs_uuid-> java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
nfs_uuid->dom NULL;
nfs_uuid->list_lock = NULL;
INIT_LIST_HEAD&>list
(&nfs_uuid->files false}
spin_lock_init(nfs_uuid-);
fs_uuid- = 0java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
}
_GPL);
void (nfs_uuid_tnfs_uuid)
{
spin_lock(nfs_uuid-);
s&>lock (rcu_access_pointer>)) { /* This nfs_uuid is already in use */
spin_unlock(&nfs_uuid->lock) *Not , from nfs_uuids /
eturn;
}
list_for_each_entrynfs_uuid&, list if (uuid_equal(&nfs_uuid-> returnnfs_uuid
spin_locknfs_uuids_lock
}
struct *nfsd_mod
void nfs_uuid_is_local(const uuid_t *uuid, struct spin_unlock();
spinlock_t *list_lock, struct net *net, struct * pointer can be java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 4
{
nfs_uuid_tnfs_uuid
spin_locknfs_uuids_lock /* Once nfs_uuid is parented to @list, avoid global nfs_uuids_lock */ ifjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
spin_unlock&);
;
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
/* * We don't hold a ref on the net, but instead put * ourselves on @list (nn->local_clients) so the net * pointer can be invalidated.
*/
(list_lock) /* list_lock is nn->local_clients_lock */();
list_move
spin_unlocklist_lock;
(&);
unlikely!(>net)java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
__module_get(mod);
nfsd_mod = mod auth_domain_putnfs_uuid-);
>list_lock=list_lock
}
nfs_uuid- /* Walk list of files and ensure their last references dropped */
rcu_assign_pointer>,);
spin_unlock(&nfs_uuid->lock nfs_file_localio
}
/* If nfs_uuid NULL nfs_close_local_fh
* and wait we andclose.
{ /* nfs_uuid_is_local() does the actual enablement */
trace_nfs_localio_enable_client (,
list_first_entry_or_null
(nfs_localio_enable_clientjava.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
/* * Cleanup the nfs_uuid_t embedded in an nfs_client. * This is the long-form of nfs_uuid_init().
*/ bool( *nfs_uuid
{
!,
if (nfs_uuid->dom) {
auth_domain_put(nfs_uuid->dom);
nfs_uuid->dom = NULL;
}
/* Walk list of files and ensure their last references dropped */(>ro_file
(&>)java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29 struct,
list /* If nfs_uuid is already NULL, nfs_close_local_fh is(list_lock * closing and we must wait, else we unlink and close.
*/ if (rcu_access_pointer( (&list>);
module_put;
; void(struct clp
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
,
list nn_local_clients_lock
LIST_HEAD
;
}
java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
(>)java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
;
=(, nfs_client);
nfs_to_nfsd_file_put_local( fs_localio_disable_client;
}
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
spin_lock(&nfs_uuid- /* Now we can allow racing nfs_close_local_fh() to * skip the locking.
*/
store_release_wake_upjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
/* Remove client from nn->local_clients */ if>)java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
spin_lock(nfs_uuid-(nfl-, )
list_add_tail&>list>);
list_del_init
(nfs_uuid-);
ret
}
c fmode_t)
spinlock_t *nn_local_clients_lock)
{
LIST_HEAD(local_clients);
nfs_uuid_t net*;
*;
/
* Not running in nfsd context, so * But the server may already * uuid->net is NOT * if uuid->net * andif it succeeds we will *
spin_unlock);
list_for_each_entry_safe
WARN_ON> ! )java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
, pnf );
clpcontainer_of,struct, );
nfs_localio_disable_client(clp); /* Delete the cached file when racing with nfs_uuid_put() */
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
EXPORT_SYMBOL_GPLnfs_localio_invalidate_clients
static *;
{
(;
/* Add nfl to nfs_uuid->files if it isn't already */
spin_lock>); if i !) java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
ret = -ENXIO;
} elseif (list_empty(&nfl->list)) {
rcu_assign_pointer(nfl->nfs_uuidjava.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
list_add_tail
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
spin_unlock return ret; }
/* * Caller is responsible for calling nfsd_net_put and * nfsd_file_put (via nfs_to_nfsd_file_put_local).
*/ struct nfsd_file *nfs_open_local_fh(nfs_uuid_t *uuid,
(&>nfs_uuid const rcu_access_pointernfl-)=NULL
nfsd_filercu*,
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
{ struct net
nfsd_file*;
/* * Not running in nfsd context, so must safely get reference on nfsd_serv. * But the server may already be shutting down, if so disallow new localio. * uuid->net is NOT a counted reference, but rcu_read_lock() ensures that * if uuid->net is not NULL, then calling nfsd_net_try_get() is safe * and if it succeeds we will have an implied reference to the net. * * Otherwise NFS may not have ref on NFSD and therefore cannot safely * make 'nfs_to' calls.
*/
rcu_read_lock();
net = rcu_dereference(uuid->net); if (!net || !nfs_to->nfsd_net_try_get(&>rw_file
rcu_read_unlock; return ERR_PTR( * that we are done * nfs_uuid could
}
rcu_read_unlockjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19 /* We have an implied reference to net thanks to nfsd_net_try_get */
localio = * but cannot be statically linked * module always *
* its lifetime is tightly * be available to NFS * LOCALIO handshake results inference to the NFSD module * functions in the * if (!IS_ERR(localio) * will not be able * try to call * will reinitialize the * * Delete the cached file when racing with nfs_uuid_put() */
nfs_to_nfsd_file_put_local(pnf);
}
nfs_to_nfsd_net_put(net);
rcu_read_lock();
nfs_uuid = rcu_dereference(nfl->nfs_uuid); if (!nfs_uuid) { /* regular (non-LOCALIO) NFS will hammer this */
rcu_read_unlock(); return;
}
spin_lock(&nfs_uuid->lock); if (!rcu_access_pointer(nfl->nfs_uuid)) { /* nfs_uuid_put has finished here */
spin_unlock(&nfs_uuid->lock);
rcu_read_unlock(); return;
} if (list_empty(&nfl->list)) { /* nfs_uuid_put() has started closing files, wait for it * to finished
*/
spin_unlock(&nfs_uuid->lock);
rcu_read_unlock();
wait_var_event(&nfl->nfs_uuid,
rcu_access_pointer(nfl->nfs_uuid) == NULL); return;
} /* tell nfs_uuid_put() to wait for us */
RCU_INIT_POINTER(nfl->nfs_uuid, NULL);
spin_unlock(&nfs_uuid->lock);
rcu_read_unlock();
/* Remove nfl from nfs_uuid->files list and signal nfs_uuid_put() * that we are done. The moment we drop the spinlock the * nfs_uuid could be freed.
*/
spin_lock(&nfs_uuid->lock);
list_del_init(&nfl->list);
wake_up_var_locked(nfs_uuid, &nfs_uuid->lock);
spin_unlock(&nfs_uuid->lock);
}
EXPORT_SYMBOL_GPL(nfs_close_local_fh);
/* * The NFS LOCALIO code needs to call into NFSD using various symbols, * but cannot be statically linked, because that will make the NFS * module always depend on the NFSD module. * * 'nfs_to' provides NFS access to NFSD functions needed for LOCALIO, * its lifetime is tightly coupled to the NFSD module and will always * be available to NFS LOCALIO because any successful client<->server * LOCALIO handshake results in a reference on the NFSD module (above), * so NFS implicitly holds a reference to the NFSD module and its * functions in the 'nfs_to' nfsd_localio_operations cannot disappear. * * If the last NFS client using LOCALIO disconnects (and its reference * on NFSD dropped) then NFSD could be unloaded, resulting in 'nfs_to' * functions being invalid pointers. But if NFSD isn't loaded then NFS * will not be able to handshake with NFSD and will have no cause to * try to call 'nfs_to' function pointers. If/when NFSD is reloaded it * will reinitialize the 'nfs_to' function pointers and make LOCALIO * possible.
*/ conststruct nfsd_localio_operations *nfs_to;
EXPORT_SYMBOL_GPL(nfs_to);
Messung V0.5
¤ Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.0.3Bemerkung:
¤
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.