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| author | Keith Busch <keith.busch@intel.com> | 2013-10-23 23:07:34 +0400 |
|---|---|---|
| committer | Matthew Wilcox <matthew.r.wilcox@intel.com> | 2013-12-17 00:49:40 +0400 |
| commit | 320a382746e0ab1304476ea7e986a8d416ab99db (patch) | |
| tree | bbb40d77dd5f915fbdc87461869526e115f42de0 /drivers/block/nvme-core.c | |
| parent | 481e5bad84239b01415b888df2040c1860ae3cfd (diff) | |
| download | linux-320a382746e0ab1304476ea7e986a8d416ab99db.tar.xz | |
NVMe: compat SG_IO ioctl
For 32-bit versions of sg3-utils running on a 64-bit system. This is
mostly a copy from the relevent portions of fs/compat_ioctl.c, with
slight modifications for going through block_device_operations.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Vishal Verma <vishal.l.verma@linux.intel.com>
[fixed up CONFIG_COMPAT=n build problems]
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Diffstat (limited to 'drivers/block/nvme-core.c')
| -rw-r--r-- | drivers/block/nvme-core.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index df3daeb6227f..e44350de8a21 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -1568,10 +1568,26 @@ static int nvme_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, } } +#ifdef CONFIG_COMPAT +static int nvme_compat_ioctl(struct block_device *bdev, fmode_t mode, + unsigned int cmd, unsigned long arg) +{ + struct nvme_ns *ns = bdev->bd_disk->private_data; + + switch (cmd) { + case SG_IO: + return nvme_sg_io32(ns, arg); + } + return nvme_ioctl(bdev, mode, cmd, arg); +} +#else +#define nvme_compat_ioctl NULL +#endif + static const struct block_device_operations nvme_fops = { .owner = THIS_MODULE, .ioctl = nvme_ioctl, - .compat_ioctl = nvme_ioctl, + .compat_ioctl = nvme_compat_ioctl, }; static void nvme_resubmit_bios(struct nvme_queue *nvmeq) |