diff options
| author | Christoph Hellwig <hch@lst.de> | 2017-11-02 21:29:53 +0300 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:33:25 +0800 |
| commit | 7a56fe8e2e37fb198a0b3bcd120ca141302d99f7 (patch) | |
| tree | 37134b51daa251635fe931bac1eaf993e1a2910e /include/linux/genhd.h | |
| parent | bece506fe73817b65143e2ef0a13451360bbd4ab (diff) | |
block: introduce GENHD_FL_HIDDEN
With this flag a driver can create a gendisk that can be used for I/O
submission inside the kernel, but which is not registered as user
facing block device. This will be useful for the NVMe multipath
implementation.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
(cherry picked from commit 8ddcd653257c18a669fcb75ee42c37054908e0d6)
Diffstat (limited to 'include/linux/genhd.h')
| -rw-r--r-- | include/linux/genhd.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 2e10e356ba8b..f031ee63abae 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -141,6 +141,7 @@ struct hd_struct { #define GENHD_FL_NATIVE_CAPACITY 128 #define GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE 256 #define GENHD_FL_NO_PART_SCAN 512 +#define GENHD_FL_HIDDEN 1024 enum { DISK_EVENT_MEDIA_CHANGE = 1 << 0, /* media changed */ |