/*
 * JFFS2 -- Journalling Flash File System, Version 2.
 *
 * Copyright © 2006  NEC Corporation
 *
 * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
 *
 * For licensing information, see the file 'LICENCE' in this directory.
 *
 */

#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/jffs2.h>
#include <linux/xattr.h>
#include <linux/mtd/mtd.h>
#include "nodelist.h"

static int jffs2_user_getxattr(const struct xattr_handler *handler,
			       struct dentry *unused, struct inode *inode,
			       const char *name, void *buffer, size_t size)
{
	return do_jffs2_getxattr(inode, JFFS2_XPREFIX_USER,
				 name, buffer, size);
}

static int jffs2_user_setxattr(const struct xattr_handler *handler,
			       struct dentry *unused, struct inode *inode,
			       const char *name, const void *buffer,
			       size_t size, int flags)
{
	return do_jffs2_setxattr(inode, JFFS2_XPREFIX_USER,
				 name, buffer, size, flags);
}

const struct xattr_handler jffs2_user_xattr_handler = {
	.prefix = XATTR_USER_PREFIX,
	.set = jffs2_user_setxattr,
	.get = jffs2_user_getxattr
};
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=0933840acf7b65d6d30a5b6089d882afea57aca3'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=0933840acf7b65d6d30a5b6089d882afea57aca3'>Documentation</a>/<a href='/cgit.cgi/linux/net-next.git/commit/Documentation/isapnp.txt?id=0933840acf7b65d6d30a5b6089d882afea57aca3'>isapnp.txt</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='0933840acf7b65d6d30a5b6089d882afea57aca3'/><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>Jiri Olsa &lt;jolsa@redhat.com&gt;</td><td class='right'>2016-10-20 13:10:11 +0200</td></tr>
<tr><th>committer</th><td>Ingo Molnar &lt;mingo@kernel.org&gt;</td><td class='right'>2016-10-28 11:06:25 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation/isapnp.txt?id=0933840acf7b65d6d30a5b6089d882afea57aca3'>0933840acf7b65d6d30a5b6089d882afea57aca3</a> (<a href='/cgit.cgi/linux/net-next.git/patch/Documentation/isapnp.txt?id=0933840acf7b65d6d30a5b6089d882afea57aca3'>patch</a>)</td></tr>
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<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation/isapnp.txt?id=889882bce2a5f69242c1f3acd840983f467499b9'>889882bce2a5f69242c1f3acd840983f467499b9</a> (<a href='/cgit.cgi/linux/net-next.git/diff/Documentation/isapnp.txt?id=0933840acf7b65d6d30a5b6089d882afea57aca3&amp;id2=889882bce2a5f69242c1f3acd840983f467499b9'>diff</a>)</td></tr></table>
<div class='commit-subject'>perf/core: Protect PMU device removal with a 'pmu_bus_running' check, to fix CONFIG_DEBUG_TEST_DRIVER_REMOVE=y kernel panic</div><div class='commit-msg'>CAI Qian reported a crash in the PMU uncore device removal code,
enabled by the CONFIG_DEBUG_TEST_DRIVER_REMOVE=y option:

  https://marc.info/?l=linux-kernel&amp;m=147688837328451

The reason for the crash is that perf_pmu_unregister() tries to remove
a PMU device which is not added at this point. We add PMU devices
only after pmu_bus is registered, which happens in the
perf_event_sysfs_init() call and sets the 'pmu_bus_running' flag.

The fix is to get the 'pmu_bus_running' flag state at the point
the PMU is taken out of the PMU list and remove the device
later only if it's set.

Reported-by: CAI Qian &lt;caiqian@redhat.com&gt;
Tested-by: CAI Qian &lt;caiqian@redhat.com&gt;
Signed-off-by: Jiri Olsa &lt;jolsa@kernel.org&gt;
Signed-off-by: Peter Zijlstra (Intel) &lt;peterz@infradead.org&gt;
Cc: Alexander Shishkin &lt;alexander.shishkin@linux.intel.com&gt;
Cc: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
Cc: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Cc: Jiri Olsa &lt;jolsa@redhat.com&gt;
Cc: Kan Liang &lt;kan.liang@intel.com&gt;
Cc: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Rob Herring &lt;robh@kernel.org&gt;
Cc: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Link: http://lkml.kernel.org/r/20161020111011.GA13361@krava
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=0933840acf7b65d6d30a5b6089d882afea57aca3'>Diffstat</a> (limited to 'Documentation/isapnp.txt')</div><table summary='diffstat' class='diffstat'>