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| author | Christoph Hellwig | 2017-11-02 19:29:53 +0100 |
|---|---|---|
| committer | Jens Axboe | 2017-11-03 17:31:48 +0100 |
| commit | 8ddcd653257c18a669fcb75ee42c37054908e0d6 (patch) | |
| tree | 1717b2161a7b718d00e11394c8163dcaf1622a71 /include/linux/genhd.h | |
| parent | block: don't look at the struct device dev_t in disk_devt (diff) | |
| download | kernel-qcow2-linux-8ddcd653257c18a669fcb75ee42c37054908e0d6.tar.gz kernel-qcow2-linux-8ddcd653257c18a669fcb75ee42c37054908e0d6.tar.xz kernel-qcow2-linux-8ddcd653257c18a669fcb75ee42c37054908e0d6.zip | |
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>
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 5c0ed5db33c2..93aae3476f58 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -140,6 +140,7 @@ 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 */ |