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authorKeith Busch <keith.busch@intel.com>2016-04-30 00:45:18 +0300
committerJens Axboe <axboe@fb.com>2016-05-18 02:14:21 +0300
commit9ec3bb2f994bda9c8817856fdcbfaebe8f62fbd3 (patch)
treef97fe0c5ee4c45fe9bc93a735c73d84cef992585 /include/uapi
parentd011fb3164e8694d7839f10a497f8ab6c660149a (diff)
downloadlinux-9ec3bb2f994bda9c8817856fdcbfaebe8f62fbd3.tar.xz
NVMe: Allow user initiated rescan
This exposes ioctl and sysfs methods a user can invoke to request the driver rescan a controller and its namespaces. This is less harsh than doing a controller reset, which temporarilly halts all IO, just to surface a newly attached namespace. This is mainly useful for controllers that implement the namespace management command, but do not support the namespace notify change asynchronous event notification. Signed-off-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/uapi')
-rw-r--r--include/uapi/linux/nvme_ioctl.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/nvme_ioctl.h b/include/uapi/linux/nvme_ioctl.h
index c4b2a3f90829..50ff21f748b6 100644
--- a/include/uapi/linux/nvme_ioctl.h
+++ b/include/uapi/linux/nvme_ioctl.h
@@ -61,5 +61,6 @@ struct nvme_passthru_cmd {
#define NVME_IOCTL_IO_CMD _IOWR('N', 0x43, struct nvme_passthru_cmd)
#define NVME_IOCTL_RESET _IO('N', 0x44)
#define NVME_IOCTL_SUBSYS_RESET _IO('N', 0x45)
+#define NVME_IOCTL_RESCAN _IO('N', 0x46)
#endif /* _UAPI_LINUX_NVME_IOCTL_H */