linux-kernel - [PATCH 3/8] pmem: Add support for rw

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Message-ID: <54F84474.6010507@plexistor.com>
Date:	Thu, 05 Mar 2015 13:56:36 +0200
From:	Boaz Harrosh <boaz@...xistor.com>
To:	Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"Roger C. Pao" <rcpao.enmotus@...il.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-nvdimm <linux-nvdimm@...ts.01.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Matthew Wilcox <willy@...ux.intel.com>,
	Andy Lutomirski <luto@...capital.net>,
	Christoph Hellwig <hch@...radead.org>
CC:	Ross Zwisler <ross.zwisler@...ux.intel.com>
Subject: [PATCH 3/8] pmem: Add support for rw_page()

From: Ross Zwisler <ross.zwisler@...ux.intel.com>

Based on commit a72132c31d58 ("brd: add support for rw_page()")

Signed-off-by: Ross Zwisler <ross.zwisler@...ux.intel.com>
---
 drivers/block/pmem.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/block/pmem.c b/drivers/block/pmem.c
index bba53af..750ffdf 100644
--- a/drivers/block/pmem.c
+++ b/drivers/block/pmem.c
@@ -101,8 +101,19 @@ out:
 	bio_endio(bio, err);
 }
 
+static int pmem_rw_page(struct block_device *bdev, sector_t sector,
+		       struct page *page, int rw)
+{
+	struct pmem_device *pmem = bdev->bd_disk->private_data;
+
+	pmem_do_bvec(pmem, page, PAGE_CACHE_SIZE, 0, rw, sector);
+	page_endio(page, rw & WRITE, 0);
+	return 0;
+}
+
 static const struct block_device_operations pmem_fops = {
 	.owner =		THIS_MODULE,
+	.rw_page =		pmem_rw_page,
 };
 
 /* Kernel module stuff */
-- 
1.9.3

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