/*
 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * 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.
 *
 * This program is distributed in the hope that it would 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#include <linux/mm.h>
#include <linux/highmem.h>
#include <linux/slab.h>
#include <linux/swap.h>
#include <linux/blkdev.h>
#include <linux/backing-dev.h>
#include "kmem.h"
#include "xfs_message.h"

/*
 * Greedy allocation.  May fail and may return vmalloced memory.
 */
void *
kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize)
{
	void		*ptr;
	size_t		kmsize = maxsize;

	while (!(ptr = vzalloc(kmsize))) {
		if ((kmsize >>= 1) <= minsize)
			kmsize = minsize;
	}
	if (ptr)
		*size = kmsize;
	return ptr;
}

void *
kmem_alloc(size_t size, xfs_km_flags_t flags)
{
	int	retries = 0;
	gfp_t	lflags = kmem_flags_convert(flags);
	void	*ptr;

	do {
		ptr = kmalloc(size, lflags);
		if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))
			return ptr;
		if (!(++retries % 100))
			xfs_err(NULL,
	"%s(%u) possible memory allocation deadlock size %u in %s (mode:0x%x)",
				current->comm, current->pid,
				(unsigned int)size, __func__, lflags);
		congestion_wait(BLK_RW_ASYNC, HZ/50);
	} while (1);
}

void *
kmem_zalloc_large(size_t size, xfs_km_flags_t flags)
{
	unsigned noio_flag = 0;
	void	*ptr;
	gfp_t	lflags;

	ptr = kmem_zalloc(size, flags | KM_MAYFAIL);
	if (ptr)
		return ptr;

	/*
	 * __vmalloc() will allocate data pages and auxillary structures (e.g.
	 * pagetables) with GFP_KERNEL, yet we may be under GFP_NOFS context
	 * here. Hence we need to tell memory reclaim that we are in such a
	 * context via PF_MEMALLOC_NOIO to prevent memory reclaim re-entering
	 * the filesystem here and potentially deadlocking.
	 */
	if ((current->flags & PF_FSTRANS) || (flags & KM_NOFS))
		noio_flag = memalloc_noio_save();

	lflags = kmem_flags_convert(flags);
	ptr = __vmalloc(size, lflags | __GFP_HIGHMEM | __GFP_ZERO, PAGE_KERNEL);

	if ((current->flags & PF_FSTRANS) || (flags & KM_NOFS))
		memalloc_noio_restore(noio_flag);

	return ptr;
}

void *
kmem_realloc(const void *old, size_t newsize, xfs_km_flags_t flags)
{
	int	retries = 0;
	gfp_t	lflags = kmem_flags_convert(flags);
	void	*ptr;

	do {
		ptr = krealloc(old, newsize, lflags);
		if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))
			return ptr;
		if (!(++retries % 100))
			xfs_err(NULL,
	"%s(%u) possible memory allocation deadlock size %zu in %s (mode:0x%x)",
				current->comm, current->pid,
				newsize, __func__, lflags);
		congestion_wait(BLK_RW_ASYNC, HZ/50);
	} while (1);
}

void *
kmem_zone_alloc(kmem_zone_t *zone, xfs_km_flags_t flags)
{
	int	retries = 0;
	gfp_t	lflags = kmem_flags_convert(flags);
	void	*ptr;

	do {
		ptr = kmem_cache_alloc(zone, lflags);
		if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))
			return ptr;
		if (!(++retries % 100))
			xfs_err(NULL,
		"%s(%u) possible memory allocation deadlock in %s (mode:0x%x)",
				current->comm, current->pid,
				__func__, lflags);
		congestion_wait(BLK_RW_ASYNC, HZ/50);
	} while (1);
}
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>Venkat Reddy Talla &lt;vreddytalla@nvidia.com&gt;</td><td class='right'>2016-11-17 23:24:36 +0530</td></tr>
<tr><th>committer</th><td>Mark Brown &lt;broonie@kernel.org&gt;</td><td class='right'>2016-11-23 16:27:42 +0000</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/decnet/Kconfig?id=983779235a4d08f94e8cda073200423e0ff01d2e'>983779235a4d08f94e8cda073200423e0ff01d2e</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/decnet/Kconfig?id=983779235a4d08f94e8cda073200423e0ff01d2e'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=983779235a4d08f94e8cda073200423e0ff01d2e'>254b624bd499c14b09d55abaf209ea95f3c860f7</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/decnet/Kconfig?id=983779235a4d08f94e8cda073200423e0ff01d2e'>net/decnet/Kconfig</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/decnet/Kconfig?id=383d0fca7035a12f1201277d33e8fc87c9d60c9a'>383d0fca7035a12f1201277d33e8fc87c9d60c9a</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/decnet/Kconfig?id=983779235a4d08f94e8cda073200423e0ff01d2e&amp;id2=383d0fca7035a12f1201277d33e8fc87c9d60c9a'>diff</a>)</td></tr></table>
<div class='commit-subject'>regulator: max77620: add documentation for MPOK property</div><div class='commit-msg'>Adding documentation for maxim,power-ok-control dts property

Signed-off-by: Venkat Reddy Talla &lt;vreddytalla@nvidia.com&gt;
Acked-by: Rob Herring &lt;robh@kernel.org&gt;
Acked-by: Lee Jones &lt;lee.jones@linaro.org&gt;
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=983779235a4d08f94e8cda073200423e0ff01d2e'>Diffstat</a> (limited to 'net/decnet/Kconfig')</div><table summary='diffstat' class='diffstat'>