/*
 * page.h - buffer/page management specific to NILFS
 *
 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that 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.
 *
 * Written by Ryusuke Konishi and Seiji Kihara.
 */

#ifndef _NILFS_PAGE_H
#define _NILFS_PAGE_H

#include <linux/buffer_head.h>
#include "nilfs.h"

/*
 * Extended buffer state bits
 */
enum {
	BH_NILFS_Allocated = BH_PrivateStart,
	BH_NILFS_Node,
	BH_NILFS_Volatile,
	BH_NILFS_Checked,
	BH_NILFS_Redirected,
};

BUFFER_FNS(NILFS_Node, nilfs_node)		/* nilfs node buffers */
BUFFER_FNS(NILFS_Volatile, nilfs_volatile)
BUFFER_FNS(NILFS_Checked, nilfs_checked)	/* buffer is verified */
BUFFER_FNS(NILFS_Redirected, nilfs_redirected)	/* redirected to a copy */


int __nilfs_clear_page_dirty(struct page *);

struct buffer_head *nilfs_grab_buffer(struct inode *, struct address_space *,
				      unsigned long, unsigned long);
void nilfs_forget_buffer(struct buffer_head *);
void nilfs_copy_buffer(struct buffer_head *, struct buffer_head *);
int nilfs_page_buffers_clean(struct page *);
void nilfs_page_bug(struct page *);

int nilfs_copy_dirty_pages(struct address_space *, struct address_space *);
void nilfs_copy_back_pages(struct address_space *, struct address_space *);
void nilfs_clear_dirty_page(struct page *, bool);
void nilfs_clear_dirty_pages(struct address_space *, bool);
void nilfs_mapping_init(struct address_space *mapping, struct inode *inode);
unsigned int nilfs_page_count_clean_buffers(struct page *, unsigned int,
					    unsigned int);
unsigned long nilfs_find_uncommitted_extent(struct inode *inode,
					    sector_t start_blk,
					    sector_t *blkoff);

#define NILFS_PAGE_BUG(page, m, a...) \
	do { nilfs_page_bug(page); BUG(); } while (0)

static inline struct buffer_head *
nilfs_page_get_nth_block(struct page *page, unsigned int count)
{
	struct buffer_head *bh = page_buffers(page);

	while (count-- > 0)
		bh = bh->b_this_page;
	get_bh(bh);
	return bh;
}

#endif /* _NILFS_PAGE_H */
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=fd7c99142d77dc4a851879a66715abf12a3193fb'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=fd7c99142d77dc4a851879a66715abf12a3193fb'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/soc?id=fd7c99142d77dc4a851879a66715abf12a3193fb'>soc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/soc/arc?id=fd7c99142d77dc4a851879a66715abf12a3193fb'>arc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/soc/arc/aux.h?id=fd7c99142d77dc4a851879a66715abf12a3193fb'>aux.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='fd7c99142d77dc4a851879a66715abf12a3193fb'/><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>Dave Martin &lt;Dave.Martin@arm.com&gt;</td><td class='right'>2017-01-06 17:54:51 +0000</td></tr>
<tr><th>committer</th><td>Chris Metcalf &lt;cmetcalf@mellanox.com&gt;</td><td class='right'>2017-01-06 15:14:08 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/soc/arc/aux.h?id=fd7c99142d77dc4a851879a66715abf12a3193fb'>fd7c99142d77dc4a851879a66715abf12a3193fb</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/soc/arc/aux.h?id=fd7c99142d77dc4a851879a66715abf12a3193fb'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=fd7c99142d77dc4a851879a66715abf12a3193fb'>5fe0d6f6b165d867bb76c296c0afbb5b22c52f47</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/soc/arc/aux.h?id=fd7c99142d77dc4a851879a66715abf12a3193fb'>include/soc/arc/aux.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/soc/arc/aux.h?id=0c744ea4f77d72b3dcebb7a8f2684633ec79be88'>0c744ea4f77d72b3dcebb7a8f2684633ec79be88</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/soc/arc/aux.h?id=fd7c99142d77dc4a851879a66715abf12a3193fb&amp;id2=0c744ea4f77d72b3dcebb7a8f2684633ec79be88'>diff</a>)</td></tr></table>
<div class='commit-subject'>tile/ptrace: Preserve previous registers for short regset write</div><div class='commit-msg'>Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.

Cc: stable@vger.kernel.org
Signed-off-by: Dave Martin &lt;Dave.Martin@arm.com&gt;
Signed-off-by: Chris Metcalf &lt;cmetcalf@mellanox.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=fd7c99142d77dc4a851879a66715abf12a3193fb'>Diffstat</a> (limited to 'include/soc/arc/aux.h')</div><table summary='diffstat' class='diffstat'>