/* file-mmu.c: ramfs MMU-based file operations
 *
 * Resizable simple ram filesystem for Linux.
 *
 * Copyright (C) 2000 Linus Torvalds.
 *               2000 Transmeta Corp.
 *
 * Usage limits added by David Gibson, Linuxcare Australia.
 * This file is released under the GPL.
 */

/*
 * NOTE! This filesystem is probably most useful
 * not as a real filesystem, but as an example of
 * how virtual filesystems can be written.
 *
 * It doesn't get much simpler than this. Consider
 * that this file implements the full semantics of
 * a POSIX-compliant read-write filesystem.
 *
 * Note in particular how the filesystem does not
 * need to implement any data structures of its own
 * to keep track of the virtual data: using the VFS
 * caches is sufficient.
 */

#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/ramfs.h>
#include <linux/sched.h>

#include "internal.h"

static unsigned long ramfs_mmu_get_unmapped_area(struct file *file,
		unsigned long addr, unsigned long len, unsigned long pgoff,
		unsigned long flags)
{
	return current->mm->get_unmapped_area(file, addr, len, pgoff, flags);
}

const struct file_operations ramfs_file_operations = {
	.read_iter	= generic_file_read_iter,
	.write_iter	= generic_file_write_iter,
	.mmap		= generic_file_mmap,
	.fsync		= noop_fsync,
	.splice_read	= generic_file_splice_read,
	.splice_write	= iter_file_splice_write,
	.llseek		= generic_file_llseek,
	.get_unmapped_area	= ramfs_mmu_get_unmapped_area,
};

const struct inode_operations ramfs_file_inode_operations = {
	.setattr	= simple_setattr,
	.getattr	= simple_getattr,
};
nux/net-next.git/?h=nds-private-remove'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?h=nds-private-remove&amp;id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/sound/drivers/vx?h=nds-private-remove'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/sound/drivers/vx?h=nds-private-remove&amp;id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/sound/drivers/vx?h=nds-private-remove&amp;id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/sound/drivers/vx?h=nds-private-remove&amp;id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/sound/drivers/vx'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound?h=nds-private-remove&amp;id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/drivers?h=nds-private-remove&amp;id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/drivers/vx?h=nds-private-remove&amp;id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>vx</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'/><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>Alexander Stein &lt;alexander.stein@systec-electronic.com&gt;</td><td class='right'>2017-01-30 12:35:28 +0100</td></tr>
<tr><th>committer</th><td>Linus Walleij &lt;linus.walleij@linaro.org&gt;</td><td class='right'>2017-01-30 15:53:57 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/drivers/vx?h=nds-private-remove&amp;id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>cdca06e4e85974d8a3503ab15709dbbaf90d3dd1</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/drivers/vx?id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>268b0c01070a957006db97c88dccb5fb061440ff</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/drivers/vx?h=nds-private-remove&amp;id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>sound/drivers/vx</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/drivers/vx?h=nds-private-remove&amp;id=1b89970d81bbd52720fc64a3fe9572ee33588363'>1b89970d81bbd52720fc64a3fe9572ee33588363</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/drivers/vx?h=nds-private-remove&amp;id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1&amp;id2=1b89970d81bbd52720fc64a3fe9572ee33588363'>diff</a>)</td></tr></table>
<div class='commit-subject'>pinctrl: baytrail: Add missing spinlock usage in byt_gpio_irq_handler</div><div class='commit-msg'>According to VLI64 Intel Atom E3800 Specification Update (#329901)
concurrent read accesses may result in returning 0xffffffff and write
accesses may be dropped silently.
To workaround all accesses must be protected by locks.

Cc: stable@vger.kernel.org
Signed-off-by: Alexander Stein &lt;alexander.stein@systec-electronic.com&gt;
Acked-by: Mika Westerberg &lt;mika.westerberg@linux.intel.com&gt;
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>Diffstat</a> (limited to 'sound/drivers/vx')</div><table summary='diffstat' class='diffstat'>