static int __del_msg_handle (struct shim_msg_handle * msgq)
{
if (msgq->deleted)
return -EIDRM;
msgq->deleted = true;
free(msgq->queue);
msgq->queuesize = 0;
msgq->queueused = 0;
free(msgq->types);
msgq->ntypes = 0;
struct shim_handle * hdl = MSG_TO_HANDLE(msgq);
lock(msgq_list_lock);
list_del_init(&msgq->list);
put_handle(hdl);
if (!hlist_unhashed(&msgq->key_hlist)) {
hlist_del_init(&msgq->key_hlist);
put_handle(hdl);
}
if (!hlist_unhashed(&msgq->qid_hlist)) {
hlist_del_init(&msgq->qid_hlist);
put_handle(hdl);
}
unlock(msgq_list_lock);
return 0;
}
void pin_remove(struct fs_pin *pin)
{
spin_lock(&pin_lock);
hlist_del_init(&pin->m_list);
hlist_del_init(&pin->s_list);
spin_unlock(&pin_lock);
spin_lock_irq(&pin->wait.lock);
pin->done = 1;
wake_up_locked(&pin->wait);
spin_unlock_irq(&pin->wait.lock);
}
void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
struct kvm_irq_ack_notifier *kian)
{
mutex_lock(&kvm->irq_lock);
hlist_del_init(&kian->link);
mutex_unlock(&kvm->irq_lock);
}
/*
* caller should hold one ref on contexts in freelist.
*/
static void dispose_ctx_list_kr(struct hlist_head *freelist)
{
struct hlist_node __maybe_unused *pos, *next;
struct ptlrpc_cli_ctx *ctx;
struct gss_cli_ctx *gctx;
cfs_hlist_for_each_entry_safe(ctx, pos, next, freelist, cc_cache) {
hlist_del_init(&ctx->cc_cache);
/* reverse ctx: update current seq to buddy svcctx if exist.
* ideally this should be done at gss_cli_ctx_finalize(), but
* the ctx destroy could be delayed by:
* 1) ctx still has reference;
* 2) ctx destroy is asynchronous;
* and reverse import call inval_all_ctx() require this be done
* _immediately_ otherwise newly created reverse ctx might copy
* the very old sequence number from svcctx. */
gctx = ctx2gctx(ctx);
if (!rawobj_empty(&gctx->gc_svc_handle) &&
sec_is_reverse(gctx->gc_base.cc_sec)) {
gss_svc_upcall_update_sequence(&gctx->gc_svc_handle,
(__u32) atomic_read(&gctx->gc_seq));
}
/* we need to wakeup waiting reqs here. the context might
* be forced released before upcall finished, then the
* late-arrived downcall can't find the ctx even. */
sptlrpc_cli_ctx_wakeup(ctx);
unbind_ctx_kr(ctx);
ctx_put_kr(ctx, 0);
}
/*
* Exit and free an icq. Called with both ioc and q locked.
*/
static void ioc_exit_icq(struct io_cq *icq)
{
struct io_context *ioc = icq->ioc;
struct request_queue *q = icq->q;
struct elevator_type *et = q->elevator->type;
lockdep_assert_held(&ioc->lock);
lockdep_assert_held(q->queue_lock);
radix_tree_delete(&ioc->icq_tree, icq->q->id);
hlist_del_init(&icq->ioc_node);
list_del_init(&icq->q_node);
/*
* Both setting lookup hint to and clearing it from @icq are done
* under queue_lock. If it's not pointing to @icq now, it never
* will. Hint assignment itself can race safely.
*/
if (rcu_dereference_raw(ioc->icq_hint) == icq)
rcu_assign_pointer(ioc->icq_hint, NULL);
if (et->ops.elevator_exit_icq_fn) {
ioc_release_depth_inc(q);
et->ops.elevator_exit_icq_fn(icq);
ioc_release_depth_dec(q);
}
/*
* @icq->q might have gone away by the time RCU callback runs
* making it impossible to determine icq_cache. Record it in @icq.
*/
icq->__rcu_icq_cache = et->icq_cache;
call_rcu(&icq->__rcu_head, icq_free_icq_rcu);
}
static struct cma_mem *cma_get_entry_from_list(struct cma *cma)
{
struct cma_mem *mem = NULL;
spin_lock(&cma->mem_head_lock);
if (!hlist_empty(&cma->mem_head)) {
mem = hlist_entry(cma->mem_head.first, struct cma_mem, node);
hlist_del_init(&mem->node);
}
/**
* lc_del - removes an element from the cache
* @lc: The lru_cache object
* @e: The element to remove
*
* @e must be unused (refcnt == 0). Moves @e from "lru" to "free" list,
* sets @e->enr to %LC_FREE.
*/
void lc_del(struct lru_cache *lc, struct lc_element *e)
{
PARANOIA_ENTRY();
PARANOIA_LC_ELEMENT(lc, e);
BUG_ON(e->refcnt);
e->lc_number = LC_FREE;
hlist_del_init(&e->colision);
list_move(&e->list, &lc->free);
RETURN();
}
/**
* lc_set - associate index with label
* @lc: the lru cache to operate on
* @enr: the label to set
* @index: the element index to associate label with.
*
* Used to initialize the active set to some previously recorded state.
*/
void lc_set(struct lru_cache *lc, unsigned int enr, int index)
{
struct lc_element *e;
if (index < 0 || index >= lc->nr_elements)
return;
e = lc_element_by_index(lc, index);
e->lc_number = enr;
hlist_del_init(&e->colision);
hlist_add_head(&e->colision, lc_hash_slot(lc, enr));
list_move(&e->list, e->refcnt ? &lc->in_use : &lc->lru);
}
void nilfs_remove_all_gcinode(struct the_nilfs *nilfs)
{
struct hlist_head *head = nilfs->ns_gc_inodes_h;
struct hlist_node *node, *n;
struct inode *inode;
int loop;
for (loop = 0; loop < NILFS_GCINODE_HASH_SIZE; loop++, head++) {
hlist_for_each_entry_safe(inode, node, n, head, i_hash) {
hlist_del_init(&inode->i_hash);
list_del_init(&NILFS_I(inode)->i_dirty);
nilfs_clear_gcinode(inode); /* might sleep */
}
}
static
void ctx_list_destroy_pf(struct hlist_head *head)
{
struct ptlrpc_cli_ctx *ctx;
while (!hlist_empty(head)) {
ctx = cfs_hlist_entry(head->first, struct ptlrpc_cli_ctx,
cc_cache);
LASSERT(atomic_read(&ctx->cc_refcount) == 0);
LASSERT(test_bit(PTLRPC_CTX_CACHED_BIT,
&ctx->cc_flags) == 0);
hlist_del_init(&ctx->cc_cache);
ctx_destroy_pf(ctx->cc_sec, ctx);
}
}
/*
* caller must hold spinlock
*/
static
void ctx_unhash_pf(struct ptlrpc_cli_ctx *ctx, struct hlist_head *freelist)
{
assert_spin_locked(&ctx->cc_sec->ps_lock);
LASSERT(atomic_read(&ctx->cc_refcount) > 0);
LASSERT(test_bit(PTLRPC_CTX_CACHED_BIT, &ctx->cc_flags));
LASSERT(!hlist_unhashed(&ctx->cc_cache));
clear_bit(PTLRPC_CTX_CACHED_BIT, &ctx->cc_flags);
if (atomic_dec_and_test(&ctx->cc_refcount)) {
__hlist_del(&ctx->cc_cache);
hlist_add_head(&ctx->cc_cache, freelist);
} else {
hlist_del_init(&ctx->cc_cache);
}
}
/**
* batadv_forw_packet_steal() - claim a forw_packet for free()
* @forw_packet: the forwarding packet to steal
* @lock: a key to the store to steal from (e.g. forw_{bat,bcast}_list_lock)
*
* This function tries to steal a specific forw_packet from global
* visibility for the purpose of getting it for free(). That means
* the caller is *not* allowed to requeue it afterwards.
*
* Return: True if stealing was successful. False if someone else stole it
* before us.
*/
bool batadv_forw_packet_steal(struct batadv_forw_packet *forw_packet,
spinlock_t *lock)
{
/* did purging routine steal it earlier? */
spin_lock_bh(lock);
if (batadv_forw_packet_was_stolen(forw_packet)) {
spin_unlock_bh(lock);
return false;
}
hlist_del_init(&forw_packet->list);
/* Just to spot misuse of this function */
hlist_add_fake(&forw_packet->cleanup_list);
spin_unlock_bh(lock);
return true;
}
int mlx5i_pkey_del_qpn(struct net_device *netdev, u32 qpn)
{
struct mlx5e_priv *epriv = mlx5i_epriv(netdev);
struct mlx5i_priv *ipriv = epriv->ppriv;
struct mlx5i_pkey_qpn_ht *ht = ipriv->qpn_htbl;
struct qpn_to_netdev *node;
node = mlx5i_find_qpn_to_netdev_node(ht->buckets, qpn);
if (!node) {
mlx5_core_warn(epriv->mdev, "QPN to netdev delete from HT failed\n");
return -EINVAL;
}
spin_lock_bh(&ht->ht_lock);
hlist_del_init(&node->hlist);
spin_unlock_bh(&ht->ht_lock);
kfree(node);
return 0;
}
static
void gss_cli_ctx_die_pf(struct ptlrpc_cli_ctx *ctx, int grace)
{
LASSERT(ctx->cc_sec);
LASSERT(atomic_read(&ctx->cc_refcount) > 0);
cli_ctx_expire(ctx);
spin_lock(&ctx->cc_sec->ps_lock);
if (test_and_clear_bit(PTLRPC_CTX_CACHED_BIT, &ctx->cc_flags)) {
LASSERT(!hlist_unhashed(&ctx->cc_cache));
LASSERT(atomic_read(&ctx->cc_refcount) > 1);
hlist_del_init(&ctx->cc_cache);
if (atomic_dec_and_test(&ctx->cc_refcount))
LBUG();
}
spin_unlock(&ctx->cc_sec->ps_lock);
}
/*
* Note after this get called, caller should not access ctx again because
* it might have been freed, unless caller hold at least one refcount of
* the ctx.
*
* return non-zero if we indeed unlist this ctx.
*/
static int ctx_unlist_kr(struct ptlrpc_cli_ctx *ctx, int locked)
{
struct ptlrpc_sec *sec = ctx->cc_sec;
struct gss_sec_keyring *gsec_kr = sec2gsec_keyring(sec);
/* if hashed bit has gone, leave the job to somebody who is doing it */
if (test_and_clear_bit(PTLRPC_CTX_CACHED_BIT, &ctx->cc_flags) == 0)
return 0;
/* drop ref inside spin lock to prevent race with other operations */
spin_lock_if(&sec->ps_lock, !locked);
if (gsec_kr->gsk_root_ctx == ctx)
gsec_kr->gsk_root_ctx = NULL;
hlist_del_init(&ctx->cc_cache);
atomic_dec(&ctx->cc_refcount);
spin_unlock_if(&sec->ps_lock, !locked);
return 1;
}
static bool __del_ipc_port (struct shim_ipc_port * port, int type)
{
debug("deleting port %p (handle %p) for process %u\n",
port, port->pal_handle, port->info.vmid);
bool need_restart = false;
type = type ? (type & port->info.type) : port->info.type;
if ((type & IPC_PORT_KEEPALIVE) ^
(port->info.type & IPC_PORT_KEEPALIVE))
need_restart = true;
/* if the port still have other usage, we will not remove the port */
if (port->info.type & ~(type|IPC_PORT_IFPOLL|IPC_PORT_KEEPALIVE)) {
debug("masking port %p (handle %p): type %x->%x\n",
port, port->pal_handle, port->info.type, port->info.type & ~type);
port->info.type &= ~type;
goto out;
}
if (port->info.type & IPC_PORT_IFPOLL)
need_restart = true;
if (!list_empty(&port->list)) {
list_del_init(&port->list);
port->info.type &= IPC_PORT_IFPOLL;
__put_ipc_port(port);
}
if (!hlist_unhashed(&port->hlist)) {
hlist_del_init(&port->hlist);
__put_ipc_port(port);
}
out:
port->update = true;
return need_restart;
}
/*
* Set the superblock root dentry.
* Note that this function frees the inode in case of error.
*/
static int nfs_superblock_set_dummy_root(struct super_block *sb, struct inode *inode)
{
/* The mntroot acts as the dummy root dentry for this superblock */
if (sb->s_root == NULL) {
sb->s_root = d_make_root(inode);
if (sb->s_root == NULL)
return -ENOMEM;
ihold(inode);
/*
* Ensure that this dentry is invisible to d_find_alias().
* Otherwise, it may be spliced into the tree by
* d_materialise_unique if a parent directory from the same
* filesystem gets mounted at a later time.
* This again causes shrink_dcache_for_umount_subtree() to
* Oops, since the test for IS_ROOT() will fail.
*/
spin_lock(&sb->s_root->d_inode->i_lock);
spin_lock(&sb->s_root->d_lock);
hlist_del_init(&sb->s_root->d_alias);
spin_unlock(&sb->s_root->d_lock);
spin_unlock(&sb->s_root->d_inode->i_lock);
}
return 0;
}
/* Incoming data */
static void zd1201_usbrx(struct urb *urb)
{
struct zd1201 *zd = urb->context;
int free = 0;
unsigned char *data = urb->transfer_buffer;
struct sk_buff *skb;
unsigned char type;
if (!zd)
return;
switch(urb->status) {
case -EILSEQ:
case -ENODEV:
case -ETIME:
case -ENOENT:
case -EPIPE:
case -EOVERFLOW:
case -ESHUTDOWN:
dev_warn(&zd->usb->dev, "%s: rx urb failed: %d\n",
zd->dev->name, urb->status);
free = 1;
goto exit;
}
if (urb->status != 0 || urb->actual_length == 0)
goto resubmit;
type = data[0];
if (type == ZD1201_PACKET_EVENTSTAT || type == ZD1201_PACKET_RESOURCE) {
memcpy(zd->rxdata, data, urb->actual_length);
zd->rxlen = urb->actual_length;
zd->rxdatas = 1;
wake_up(&zd->rxdataq);
}
/* Info frame */
if (type == ZD1201_PACKET_INQUIRE) {
int i = 0;
unsigned short infotype, framelen, copylen;
framelen = le16_to_cpu(*(__le16*)&data[4]);
infotype = le16_to_cpu(*(__le16*)&data[6]);
if (infotype == ZD1201_INF_LINKSTATUS) {
short linkstatus;
linkstatus = le16_to_cpu(*(__le16*)&data[8]);
switch(linkstatus) {
case 1:
netif_carrier_on(zd->dev);
break;
case 2:
netif_carrier_off(zd->dev);
break;
case 3:
netif_carrier_off(zd->dev);
break;
case 4:
netif_carrier_on(zd->dev);
break;
default:
netif_carrier_off(zd->dev);
}
goto resubmit;
}
if (infotype == ZD1201_INF_ASSOCSTATUS) {
short status = le16_to_cpu(*(__le16*)(data+8));
int event;
union iwreq_data wrqu;
switch (status) {
case ZD1201_ASSOCSTATUS_STAASSOC:
case ZD1201_ASSOCSTATUS_REASSOC:
event = IWEVREGISTERED;
break;
case ZD1201_ASSOCSTATUS_DISASSOC:
case ZD1201_ASSOCSTATUS_ASSOCFAIL:
case ZD1201_ASSOCSTATUS_AUTHFAIL:
default:
event = IWEVEXPIRED;
}
memcpy(wrqu.addr.sa_data, data+10, ETH_ALEN);
wrqu.addr.sa_family = ARPHRD_ETHER;
/* Send event to user space */
wireless_send_event(zd->dev, event, &wrqu, NULL);
goto resubmit;
}
if (infotype == ZD1201_INF_AUTHREQ) {
union iwreq_data wrqu;
memcpy(wrqu.addr.sa_data, data+8, ETH_ALEN);
wrqu.addr.sa_family = ARPHRD_ETHER;
/* There isn't a event that trully fits this request.
We assume that userspace will be smart enough to
see a new station being expired and sends back a
authstation ioctl to authorize it. */
wireless_send_event(zd->dev, IWEVEXPIRED, &wrqu, NULL);
goto resubmit;
}
/* Other infotypes are handled outside this handler */
zd->rxlen = 0;
while (i < urb->actual_length) {
copylen = le16_to_cpu(*(__le16*)&data[i+2]);
/* Sanity check, sometimes we get junk */
if (copylen+zd->rxlen > sizeof(zd->rxdata))
break;
memcpy(zd->rxdata+zd->rxlen, data+i+4, copylen);
zd->rxlen += copylen;
i += 64;
}
if (i >= urb->actual_length) {
zd->rxdatas = 1;
wake_up(&zd->rxdataq);
}
goto resubmit;
}
/* Actual data */
if (data[urb->actual_length-1] == ZD1201_PACKET_RXDATA) {
int datalen = urb->actual_length-1;
unsigned short len, fc, seq;
len = ntohs(*(__be16 *)&data[datalen-2]);
if (len>datalen)
len=datalen;
fc = le16_to_cpu(*(__le16 *)&data[datalen-16]);
seq = le16_to_cpu(*(__le16 *)&data[datalen-24]);
if (zd->monitor) {
if (datalen < 24)
goto resubmit;
if (!(skb = dev_alloc_skb(datalen+24)))
goto resubmit;
memcpy(skb_put(skb, 2), &data[datalen-16], 2);
memcpy(skb_put(skb, 2), &data[datalen-2], 2);
memcpy(skb_put(skb, 6), &data[datalen-14], 6);
memcpy(skb_put(skb, 6), &data[datalen-22], 6);
memcpy(skb_put(skb, 6), &data[datalen-8], 6);
memcpy(skb_put(skb, 2), &data[datalen-24], 2);
memcpy(skb_put(skb, len), data, len);
skb->protocol = eth_type_trans(skb, zd->dev);
zd->dev->stats.rx_packets++;
zd->dev->stats.rx_bytes += skb->len;
netif_rx(skb);
goto resubmit;
}
if ((seq & IEEE80211_SCTL_FRAG) ||
(fc & IEEE80211_FCTL_MOREFRAGS)) {
struct zd1201_frag *frag = NULL;
char *ptr;
if (datalen<14)
goto resubmit;
if ((seq & IEEE80211_SCTL_FRAG) == 0) {
frag = kmalloc(sizeof(*frag), GFP_ATOMIC);
if (!frag)
goto resubmit;
skb = dev_alloc_skb(IEEE80211_MAX_DATA_LEN +14+2);
if (!skb) {
kfree(frag);
goto resubmit;
}
frag->skb = skb;
frag->seq = seq & IEEE80211_SCTL_SEQ;
skb_reserve(skb, 2);
memcpy(skb_put(skb, 12), &data[datalen-14], 12);
memcpy(skb_put(skb, 2), &data[6], 2);
memcpy(skb_put(skb, len), data+8, len);
hlist_add_head(&frag->fnode, &zd->fraglist);
goto resubmit;
}
hlist_for_each_entry(frag, &zd->fraglist, fnode)
if (frag->seq == (seq&IEEE80211_SCTL_SEQ))
break;
if (!frag)
goto resubmit;
skb = frag->skb;
ptr = skb_put(skb, len);
if (ptr)
memcpy(ptr, data+8, len);
if (fc & IEEE80211_FCTL_MOREFRAGS)
goto resubmit;
hlist_del_init(&frag->fnode);
kfree(frag);
} else {
if (datalen<14)
void ax25_linkfail_release(struct ax25_linkfail *lf)
{
spin_lock_bh(&linkfail_lock);
hlist_del_init(&lf->lf_node);
spin_unlock_bh(&linkfail_lock);
}
int
afs_CheckRootVolume(void)
{
char rootVolName[32];
struct volume *tvp = NULL;
int usingDynroot = afs_GetDynrootEnable();
int localcell;
AFS_STATCNT(afs_CheckRootVolume);
if (*afs_rootVolumeName == 0) {
strcpy(rootVolName, "root.afs");
} else {
strcpy(rootVolName, afs_rootVolumeName);
}
if (usingDynroot) {
afs_GetDynrootFid(&afs_rootFid);
tvp = afs_GetVolume(&afs_rootFid, NULL, READ_LOCK);
} else {
struct cell *lc = afs_GetPrimaryCell(READ_LOCK);
if (!lc)
return ENOENT;
localcell = lc->cellNum;
afs_PutCell(lc, READ_LOCK);
tvp = afs_GetVolumeByName(rootVolName, localcell, 1, NULL, READ_LOCK);
if (!tvp) {
char buf[128];
int len = strlen(rootVolName);
if ((len < 9) || strcmp(&rootVolName[len - 9], ".readonly")) {
strcpy(buf, rootVolName);
afs_strcat(buf, ".readonly");
tvp = afs_GetVolumeByName(buf, localcell, 1, NULL, READ_LOCK);
}
}
if (tvp) {
int volid = (tvp->roVol ? tvp->roVol : tvp->volume);
afs_rootFid.Cell = localcell;
if (afs_rootFid.Fid.Volume && afs_rootFid.Fid.Volume != volid
&& afs_globalVp) {
/* If we had a root fid before and it changed location we reset
* the afs_globalVp so that it will be reevaluated.
* Just decrement the reference count. This only occurs during
* initial cell setup and can panic the machine if we set the
* count to zero and fs checkv is executed when the current
* directory is /afs.
*/
#ifdef AFS_LINUX20_ENV
{
struct vrequest *treq = NULL;
struct vattr vattr;
cred_t *credp;
struct dentry *dp;
struct vcache *vcp;
afs_rootFid.Fid.Volume = volid;
afs_rootFid.Fid.Vnode = 1;
afs_rootFid.Fid.Unique = 1;
credp = crref();
if (afs_CreateReq(&treq, credp))
goto out;
vcp = afs_GetVCache(&afs_rootFid, treq, NULL, NULL);
if (!vcp)
goto out;
afs_getattr(vcp, &vattr, credp);
afs_fill_inode(AFSTOV(vcp), &vattr);
dp = d_find_alias(AFSTOV(afs_globalVp));
#if defined(AFS_LINUX24_ENV)
#if defined(HAVE_DCACHE_LOCK)
spin_lock(&dcache_lock);
#else
spin_lock(&AFSTOV(vcp)->i_lock);
#endif
#if defined(AFS_LINUX26_ENV)
spin_lock(&dp->d_lock);
#endif
#endif
#if defined(D_ALIAS_IS_HLIST)
hlist_del_init(&dp->d_alias);
hlist_add_head(&dp->d_alias, &(AFSTOV(vcp)->i_dentry));
#else
list_del_init(&dp->d_alias);
list_add(&dp->d_alias, &(AFSTOV(vcp)->i_dentry));
#endif
dp->d_inode = AFSTOV(vcp);
#if defined(AFS_LINUX24_ENV)
#if defined(AFS_LINUX26_ENV)
spin_unlock(&dp->d_lock);
#endif
#if defined(HAVE_DCACHE_LOCK)
spin_unlock(&dcache_lock);
#else
spin_unlock(&AFSTOV(vcp)->i_lock);
#endif
#endif
dput(dp);
AFS_FAST_RELE(afs_globalVp);
afs_globalVp = vcp;
out:
crfree(credp);
afs_DestroyReq(treq);
}
#else
#ifdef AFS_DARWIN80_ENV
afs_PutVCache(afs_globalVp);
#else
AFS_FAST_RELE(afs_globalVp);
#endif
afs_globalVp = 0;
#endif
}
afs_rootFid.Fid.Volume = volid;
afs_rootFid.Fid.Vnode = 1;
afs_rootFid.Fid.Unique = 1;
}
}
if (tvp) {
afs_initState = 300; /* won */
afs_osi_Wakeup(&afs_initState);
afs_PutVolume(tvp, READ_LOCK);
}
if (afs_rootFid.Fid.Volume)
return 0;
else
return ENOENT;
}
void kvm_unregister_irq_ack_notifier(struct kvm_irq_ack_notifier *kian)
{
hlist_del_init(&kian->link);
}