/*
 * Copyright (c) 2014-2016, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 */
#include "test/nfit_test.h"
#include <linux/blkdev.h>
#include <pmem.h>
#include <nd.h>

long pmem_direct_access(struct block_device *bdev, sector_t sector,
		void **kaddr, pfn_t *pfn, long size)
{
	struct pmem_device *pmem = bdev->bd_queue->queuedata;
	resource_size_t offset = sector * 512 + pmem->data_offset;

	if (unlikely(is_bad_pmem(&pmem->bb, sector, size)))
		return -EIO;

	/*
	 * Limit dax to a single page at a time given vmalloc()-backed
	 * in the nfit_test case.
	 */
	if (get_nfit_res(pmem->phys_addr + offset)) {
		struct page *page;

		*kaddr = pmem->virt_addr + offset;
		page = vmalloc_to_page(pmem->virt_addr + offset);
		*pfn = page_to_pfn_t(page);
		dev_dbg_ratelimited(disk_to_dev(bdev->bd_disk)->parent,
				"%s: sector: %#llx pfn: %#lx\n", __func__,
				(unsigned long long) sector, page_to_pfn(page));

		return PAGE_SIZE;
	}

	*kaddr = pmem->virt_addr + offset;
	*pfn = phys_to_pfn_t(pmem->phys_addr + offset, pmem->pfn_flags);

	/*
	 * If badblocks are present, limit known good range to the
	 * requested range.
	 */
	if (unlikely(pmem->bb.count))
		return size;
	return pmem->size - pmem->pfn_pad - offset;
}
2f31dd03c6375e9a9f680ac37fc9d27'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/include/net/mpls_iptunnel.h'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/include/net/mpls_iptunnel.h?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/include/net/mpls_iptunnel.h?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/include/net/mpls_iptunnel.h?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/net/mpls_iptunnel.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net/mpls_iptunnel.h?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>mpls_iptunnel.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='3277953de2f31dd03c6375e9a9f680ac37fc9d27'/><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>zhong jiang &lt;zhongjiang@huawei.com&gt;</td><td class='right'>2017-01-24 15:18:52 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-24 16:26:14 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/mpls_iptunnel.h?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>3277953de2f31dd03c6375e9a9f680ac37fc9d27</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/net/mpls_iptunnel.h?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>6ba22924faa1b82ef2f0277db10a3f5abdc44157</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/net/mpls_iptunnel.h?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>include/net/mpls_iptunnel.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/mpls_iptunnel.h?id=3705ccfdd1e8b539225ce20e3925a945cc788d67'>3705ccfdd1e8b539225ce20e3925a945cc788d67</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/mpls_iptunnel.h?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27&amp;id2=3705ccfdd1e8b539225ce20e3925a945cc788d67'>diff</a>)</td></tr></table>
<div class='commit-subject'>mm: do not export ioremap_page_range symbol for external module</div><div class='commit-msg'>Recently, I've found cases in which ioremap_page_range was used
incorrectly, in external modules, leading to crashes.  This can be
partly attributed to the fact that ioremap_page_range is lower-level,
with fewer protections, as compared to the other functions that an
external module would typically call.  Those include:

     ioremap_cache
     ioremap_nocache
     ioremap_prot
     ioremap_uc
     ioremap_wc
     ioremap_wt

...each of which wraps __ioremap_caller, which in turn provides a safer
way to achieve the mapping.

Therefore, stop EXPORT-ing ioremap_page_range.

Link: http://lkml.kernel.org/r/1485173220-29010-1-git-send-email-zhongjiang@huawei.com
Signed-off-by: zhong jiang &lt;zhongjiang@huawei.com&gt;
Reviewed-by: John Hubbard &lt;jhubbard@nvidia.com&gt;
Suggested-by: John Hubbard &lt;jhubbard@nvidia.com&gt;
Acked-by: Michal Hocko &lt;mhocko@suse.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>Diffstat</a> (limited to 'include/net/mpls_iptunnel.h')</div><table summary='diffstat' class='diffstat'>