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27 March 2024, 02:37:15 UTC
Revision ba8fe0f85e15d047686caf8a42463b592c63c98c authored by Ross Zwisler on 16 September 2015, 20:52:21 UTC, committed by Dan Williams on 17 September 2015, 15:49:28 UTC 
pmem: add proper fencing to pmem_rw_page()
 
pmem_rw_page() needs to call wmb_pmem() on writes to make sure that the
newly written data is durable.  This flow was added to pmem_rw_bytes()
and pmem_make_request() with this commit:

commit 61031952f4c8 ("arch, x86: pmem api for ensuring durability of
	persistent memory updates")

...the pmem_rw_page() path was missed.

Cc: <stable@vger.kernel.org>
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
1 parent 4ca8b57
Raw File
Tip revision: ba8fe0f85e15d047686caf8a42463b592c63c98c authored by Ross Zwisler on 16 September 2015, 20:52:21 UTC
pmem: add proper fencing to pmem_rw_page()
Tip revision: ba8fe0f
no-block.c 
/* no-block.c: implementation of routines required for non-BLOCK configuration
 *
 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * 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.
 */

#include <linux/kernel.h>
#include <linux/fs.h>

static int no_blkdev_open(struct inode * inode, struct file * filp)
{
	return -ENODEV;
}

const struct file_operations def_blk_fops = {
	.open		= no_blkdev_open,
	.llseek		= noop_llseek,
};
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