#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include "internal.h"
#include "mount.h"

static DEFINE_SPINLOCK(pin_lock);

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 pin_insert_group(struct fs_pin *pin, struct vfsmount *m, struct hlist_head *p)
{
	spin_lock(&pin_lock);
	if (p)
		hlist_add_head(&pin->s_list, p);
	hlist_add_head(&pin->m_list, &real_mount(m)->mnt_pins);
	spin_unlock(&pin_lock);
}

void pin_insert(struct fs_pin *pin, struct vfsmount *m)
{
	pin_insert_group(pin, m, &m->mnt_sb->s_pins);
}

void pin_kill(struct fs_pin *p)
{
	wait_queue_t wait;

	if (!p) {
		rcu_read_unlock();
		return;
	}
	init_wait(&wait);
	spin_lock_irq(&p->wait.lock);
	if (likely(!p->done)) {
		p->done = -1;
		spin_unlock_irq(&p->wait.lock);
		rcu_read_unlock();
		p->kill(p);
		return;
	}
	if (p->done > 0) {
		spin_unlock_irq(&p->wait.lock);
		rcu_read_unlock();
		return;
	}
	__add_wait_queue(&p->wait, &wait);
	while (1) {
		set_current_state(TASK_UNINTERRUPTIBLE);
		spin_unlock_irq(&p->wait.lock);
		rcu_read_unlock();
		schedule();
		rcu_read_lock();
		if (likely(list_empty(&wait.task_list)))
			break;
		/* OK, we know p couldn't have been freed yet */
		spin_lock_irq(&p->wait.lock);
		if (p->done > 0) {
			spin_unlock_irq(&p->wait.lock);
			break;
		}
	}
	rcu_read_unlock();
}

void mnt_pin_kill(struct mount *m)
{
	while (1) {
		struct hlist_node *p;
		rcu_read_lock();
		p = ACCESS_ONCE(m->mnt_pins.first);
		if (!p) {
			rcu_read_unlock();
			break;
		}
		pin_kill(hlist_entry(p, struct fs_pin, m_list));
	}
}

void group_pin_kill(struct hlist_head *p)
{
	while (1) {
		struct hlist_node *q;
		rcu_read_lock();
		q = ACCESS_ONCE(p->first);
		if (!q) {
			rcu_read_unlock();
			break;
		}
		pin_kill(hlist_entry(q, struct fs_pin, s_list));
	}
}
und/soc/codecs/da7219-aad.h?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/codecs/da7219-aad.h?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/sound/soc/codecs/da7219-aad.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/soc?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>soc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>codecs</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs/da7219-aad.h?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>da7219-aad.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-20 15:48:34 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-20 15:48:34 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs/da7219-aad.h?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/soc/codecs/da7219-aad.h?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>81b4e19de7308ce46ac7d0f670302906a906f0d0</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/soc/codecs/da7219-aad.h?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>sound/soc/codecs/da7219-aad.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs/da7219-aad.h?id=3eb86259eca6a363ed7bb13ecea5cda809f7b97d'>3eb86259eca6a363ed7bb13ecea5cda809f7b97d</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/codecs/da7219-aad.h?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22&amp;id2=3eb86259eca6a363ed7bb13ecea5cda809f7b97d'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs/da7219-aad.h?id=a763f78cea845c91b8d91f93dabf70c407635dc5'>a763f78cea845c91b8d91f93dabf70c407635dc5</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/codecs/da7219-aad.h?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22&amp;id2=a763f78cea845c91b8d91f93dabf70c407635dc5'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</div><div class='commit-msg'>Pull networking fixes and cleanups from David Miller:

 1) Use rb_entry() instead of hardcoded container_of(), from Geliang
    Tang.

 2) Use correct memory barriers in stammac driver, from Pavel Machek.

 3) Fix assoc bind address handling in SCTP, from Xin Long.

 4) Make the length check for UFO handling consistent between
    __ip_append_data() and ip_finish_output(), from Zheng Li.

 5) HSI driver compatible strings were busted fro hix5hd2, from Dongpo
    Li.

 6) Handle devm_ioremap() errors properly in cavium driver, from Arvind
    Yadav.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (22 commits)
  RDS: use rb_entry()
  net_sched: sch_netem: use rb_entry()
  net_sched: sch_fq: use rb_entry()
  net/mlx5: use rb_entry()
  ethernet: sfc: Add Kconfig entry for vendor Solarflare
  sctp: not copying duplicate addrs to the assoc's bind address list
  sctp: reduce indent level in sctp_copy_local_addr_list
  ARM: dts: hix5hd2: don't change the existing compatible string
  net: hix5hd2_gmac: fix compatible strings name
  openvswitch: Add a missing break statement.
  net: netcp: ethss: fix 10gbe host port tx pri map configuration
  net: netcp: ethss: fix errors in ethtool ops
  fsl/fman: enable compilation on ARM64
  fsl/fman: A007273 only applies to PPC SoCs
  powerpc: fsl/fman: remove fsl,fman from of_device_ids[]
  fsl/fman: fix 1G support for QSGMII interfaces
  dt: bindings: net: use boolean dt properties for eee broken modes
  net: phy: use boolean dt properties for eee broken modes
  net: phy: fix sign type error in genphy_config_eee_advert
  ipv4: Should use consistent conditional judgement for ip fragment in __ip_append_data and ip_finish_output
  ...
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=ba6d973f78eb62ffebb32f6ef3334fc9a3b33d22'>Diffstat</a> (limited to 'sound/soc/codecs/da7219-aad.h')</div><table summary='diffstat' class='diffstat'>