#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));
	}
}
a href='/cgit.cgi/linux/net-next.git/diff/tools/testing?id=0a0a8d6b0e88d947d7ab3198b325e31f677bebc2'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/tools/testing'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=0a0a8d6b0e88d947d7ab3198b325e31f677bebc2'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools?id=0a0a8d6b0e88d947d7ab3198b325e31f677bebc2'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/testing?id=0a0a8d6b0e88d947d7ab3198b325e31f677bebc2'>testing</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='0a0a8d6b0e88d947d7ab3198b325e31f677bebc2'/><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>Philippe Reynes &lt;tremyfr@gmail.com&gt;</td><td class='right'>2017-01-02 20:47:27 +0100</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-02 16:59:10 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing?id=0a0a8d6b0e88d947d7ab3198b325e31f677bebc2'>0a0a8d6b0e88d947d7ab3198b325e31f677bebc2</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/testing?id=0a0a8d6b0e88d947d7ab3198b325e31f677bebc2'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=0a0a8d6b0e88d947d7ab3198b325e31f677bebc2'>504ec8a8d6f48d40a4851f7f4789dc07d56fb4d3</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/testing?id=0a0a8d6b0e88d947d7ab3198b325e31f677bebc2'>tools/testing</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing?id=9da12b6454c4a762077fc33b56bdfd49acdae3ae'>9da12b6454c4a762077fc33b56bdfd49acdae3ae</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/testing?id=0a0a8d6b0e88d947d7ab3198b325e31f677bebc2&amp;id2=9da12b6454c4a762077fc33b56bdfd49acdae3ae'>diff</a>)</td></tr></table>
<div class='commit-subject'>net: fealnx: use new api ethtool_{get|set}_link_ksettings</div><div class='commit-msg'>The ethtool api {get|set}_settings is deprecated.
We move this driver to new api {get|set}_link_ksettings.

Signed-off-by: Philippe Reynes &lt;tremyfr@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
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