From: Boaz Harrosh <boaz@plexistor.com>
To: Ross Zwisler <ross.zwisler@linux.intel.com>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, Matthew Wilcox <willy@linux.intel.com>,
Sagi Manole <sagi@plexistor.com>,
Yigal Korman <yigal@plexistor.com>
Subject: [RFC 3/9] prd: Add getgeo to block ops
Date: Wed, 13 Aug 2014 15:12:42 +0300 [thread overview]
Message-ID: <53EB563A.5030805@plexistor.com> (raw)
In-Reply-To: <53EB5536.8020702@gmail.com>
From: Ross Zwisler <ross.zwisler@linux.intel.com>
Some programs require HDIO_GETGEO work, which requires we implement
getgeo. Based off of the work done to the NVMe driver in this commit:
4cc09e2dc4cb NVMe: Add getgeo to block ops
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
---
drivers/block/prd.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/block/prd.c b/drivers/block/prd.c
index 4cfc4f8..cc0aabf 100644
--- a/drivers/block/prd.c
+++ b/drivers/block/prd.c
@@ -19,6 +19,7 @@
#include <linux/bio.h>
#include <linux/blkdev.h>
#include <linux/fs.h>
+#include <linux/hdreg.h>
#include <linux/highmem.h>
#include <linux/init.h>
#include <linux/major.h>
@@ -52,6 +53,15 @@ struct prd_device {
size_t size;
};
+static int prd_getgeo(struct block_device *bd, struct hd_geometry *geo)
+{
+ /* some standard values */
+ geo->heads = 1 << 6;
+ geo->sectors = 1 << 5;
+ geo->cylinders = get_capacity(bd->bd_disk) >> 11;
+ return 0;
+}
+
/*
* direct translation from (prd,sector) => void*
* We do not require that sector be page aligned.
@@ -213,6 +223,7 @@ static const struct block_device_operations prd_fops = {
.owner = THIS_MODULE,
.rw_page = prd_rw_page,
.direct_access = prd_direct_access,
+ .getgeo = prd_getgeo,
};
/* Kernel module stuff */
--
1.9.3
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next prev parent reply other threads:[~2014-08-13 12:12 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-13 12:08 [RFC 0/9] pmem: Support for "struct page" with Persistent Memory storage Boaz Harrosh
2014-08-13 12:10 ` [RFC 1/9] prd: Initial version of Persistent RAM Driver Boaz Harrosh
2014-08-13 12:11 ` [RFC 2/9] prd: add support for rw_page() Boaz Harrosh
2014-08-13 12:12 ` Boaz Harrosh [this message]
2014-08-13 12:14 ` [RFC 4/9] SQUASHME: prd: Fixs to getgeo Boaz Harrosh
2014-08-20 22:10 ` Ross Zwisler
2014-08-21 9:47 ` Boaz Harrosh
2014-08-13 12:16 ` [RFC 5/9] SQUASHME: prd: Last fixes for partitions Boaz Harrosh
2014-08-14 13:04 ` Boaz Harrosh
2014-08-14 13:16 ` Matthew Wilcox
2014-08-14 13:55 ` Boaz Harrosh
2014-08-14 13:07 ` [PATCH 5/9 v2] " Boaz Harrosh
2014-08-25 20:10 ` Ross Zwisler
2014-08-26 8:18 ` Boaz Harrosh
2014-08-26 17:36 ` Boaz Harrosh
2014-08-26 20:34 ` Ross Zwisler
2014-08-27 4:38 ` Matthew Wilcox
2014-08-20 23:03 ` [RFC 5/9] " Ross Zwisler
2014-08-21 10:05 ` Boaz Harrosh
2014-08-13 12:18 ` [RFC 6/9] SQUASHME: prd: Let each prd-device manage private memory region Boaz Harrosh
2014-08-21 16:57 ` Ross Zwisler
2014-08-13 12:20 ` [RFC 7/9] SQUASHME: prd: Support of multiple memory regions Boaz Harrosh
2014-08-25 23:02 ` Ross Zwisler
2014-08-13 12:21 ` [RFC 8/9] mm: export sparse_add/remove_one_section Boaz Harrosh
2014-08-13 12:26 ` [RFC 9/9] prd: Add support for page struct mapping Boaz Harrosh
2014-08-15 20:28 ` Toshi Kani
2014-08-17 9:17 ` Boaz Harrosh
2014-08-18 19:48 ` Toshi Kani
2014-08-19 8:40 ` Boaz Harrosh
2014-08-19 16:49 ` Toshi Kani
2014-08-22 14:36 ` Dave Hansen
2014-09-09 16:16 ` Boaz Harrosh
2014-09-09 16:29 ` Dave Hansen
2014-08-20 20:13 ` [RFC 0/9] pmem: Support for "struct page" with Persistent Memory storage Ross Zwisler
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