Messages in this thread Patch in this message | | | Date | Wed, 06 Aug 2014 14:30:33 +0300 | From | Boaz Harrosh <> | Subject | [PATCH 2/4] brd: Add getgeo to block ops |
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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
[Boaz] Converted original work done for prd.c for here. This is needed if we want to support partitions, fdisk calls this.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Boaz Harrosh <boaz@plexistor.com> --- drivers/block/brd.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/block/brd.c b/drivers/block/brd.c index a10a0a9..3f07cb4 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -19,6 +19,7 @@ #include <linux/radix-tree.h> #include <linux/fs.h> #include <linux/slab.h> +#include <linux/hdreg.h> #include <asm/uaccess.h> @@ -424,6 +425,15 @@ static int brd_ioctl(struct block_device *bdev, fmode_t mode, return error; } +static int brd_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; +} + static const struct block_device_operations brd_fops = { .owner = THIS_MODULE, .rw_page = brd_rw_page, @@ -431,6 +441,7 @@ static const struct block_device_operations brd_fops = { #ifdef CONFIG_BLK_DEV_XIP .direct_access = brd_direct_access, #endif + .getgeo = brd_getgeo, }; /* -- 1.9.3
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