/*
 *  linux/fs/hfs/sysdep.c
 *
 * Copyright (C) 1996  Paul H. Hargrove
 * (C) 2003 Ardis Technologies <roman@ardistech.com>
 * This file may be distributed under the terms of the GNU General Public License.
 *
 * This file contains the code to do various system dependent things.
 */

#include <linux/namei.h>
#include "hfs_fs.h"

/* dentry case-handling: just lowercase everything */

static int hfs_revalidate_dentry(struct dentry *dentry, unsigned int flags)
{
	struct inode *inode;
	int diff;

	if (flags & LOOKUP_RCU)
		return -ECHILD;

	inode = d_inode(dentry);
	if(!inode)
		return 1;

	/* fix up inode on a timezone change */
	diff = sys_tz.tz_minuteswest * 60 - HFS_I(inode)->tz_secondswest;
	if (diff) {
		inode->i_ctime.tv_sec += diff;
		inode->i_atime.tv_sec += diff;
		inode->i_mtime.tv_sec += diff;
		HFS_I(inode)->tz_secondswest += diff;
	}
	return 1;
}

const struct dentry_operations hfs_dentry_operations =
{
	.d_revalidate	= hfs_revalidate_dentry,
	.d_hash		= hfs_hash_dentry,
	.d_compare	= hfs_compare_dentry,
};

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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/uapi?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>uapi</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>drm</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm/tegra_drm.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>tegra_drm.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='07cd12945551b63ecb1a349d50a6d69d1d6feb4a'/><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>Tejun Heo &lt;tj@kernel.org&gt;</td><td class='right'>2017-01-26 16:47:28 -0500</td></tr>
<tr><th>committer</th><td>Tejun Heo &lt;tj@kernel.org&gt;</td><td class='right'>2017-01-26 16:47:28 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm/tegra_drm.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>07cd12945551b63ecb1a349d50a6d69d1d6feb4a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/uapi/drm/tegra_drm.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>75f65eba7eac9277971082a2d5a4cf1370562c0c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/uapi/drm/tegra_drm.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>include/uapi/drm/tegra_drm.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm/tegra_drm.h?id=7ce7d89f48834cefece7804d38fc5d85382edf77'>7ce7d89f48834cefece7804d38fc5d85382edf77</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/uapi/drm/tegra_drm.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a&amp;id2=7ce7d89f48834cefece7804d38fc5d85382edf77'>diff</a>)</td></tr></table>
<div class='commit-subject'>cgroup: don't online subsystems before cgroup_name/path() are operational</div><div class='commit-msg'>While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out
cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems
before the new cgroup is associated with it kernfs_node.  This is fine
for cgroup proper but cgroup_name/path() depend on the associated
kernfs_node and if a subsystem makes the new cgroup_subsys_state
visible, which they're allowed to after onlining, it can lead to NULL
dereference.

The current code performs cgroup creation and subsystem onlining in
cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems
visible afterwards.  There's no reason to online the subsystems early
and we can simply drop cgroup_apply_control_enable() call from
cgroup_create() so that the subsystems are onlined and made visible at
the same time.

Signed-off-by: Tejun Heo &lt;tj@kernel.org&gt;
Reported-by: Konstantin Khlebnikov &lt;khlebnikov@yandex-team.ru&gt;
Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") 
Cc: stable@vger.kernel.org # v4.6+
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>Diffstat</a> (limited to 'include/uapi/drm/tegra_drm.h')</div><table summary='diffstat' class='diffstat'>