/*
 * Copyright (c) 2000-2001 Christoph Hellwig.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL").
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * Veritas filesystem driver - support for 'immed' inodes.
 */
#include <linux/fs.h>
#include <linux/pagemap.h>

#include "vxfs.h"
#include "vxfs_extern.h"
#include "vxfs_inode.h"


static int	vxfs_immed_readpage(struct file *, struct page *);

/*
 * Address space operations for immed files and directories.
 */
const struct address_space_operations vxfs_immed_aops = {
	.readpage =		vxfs_immed_readpage,
};

/**
 * vxfs_immed_readpage - read part of an immed inode into pagecache
 * @file:	file context (unused)
 * @page:	page frame to fill in.
 *
 * Description:
 *   vxfs_immed_readpage reads a part of the immed area of the
 *   file that hosts @pp into the pagecache.
 *
 * Returns:
 *   Zero on success, else a negative error code.
 *
 * Locking status:
 *   @page is locked and will be unlocked.
 */
static int
vxfs_immed_readpage(struct file *fp, struct page *pp)
{
	struct vxfs_inode_info	*vip = VXFS_INO(pp->mapping->host);
	u_int64_t	offset = (u_int64_t)pp->index << PAGE_SHIFT;
	caddr_t		kaddr;

	kaddr = kmap(pp);
	memcpy(kaddr, vip->vii_immed.vi_immed + offset, PAGE_SIZE);
	kunmap(pp);
	
	flush_dcache_page(pp);
	SetPageUptodate(pp);
        unlock_page(pp);

	return 0;
}
</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/testing?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>testing</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>selftests</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests/powerpc?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>powerpc</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests/powerpc/pmu?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>pmu</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests/powerpc/pmu/ebb?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>ebb</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests/powerpc/pmu/ebb/ebb_handler.S?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>ebb_handler.S</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests/powerpc/pmu/ebb/ebb_handler.S?id=94b5e0f970258828bf163b5ef076da4e4b0802e0&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>