diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-10-29 15:58:28 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-11-16 08:14:30 -0700 |
| commit | a160c6159d4a0cf82f28bc1658a958e278ec3688 (patch) | |
| tree | 2026376f6fe335c63633b974f34e6826e81f4e3e /include | |
| parent | bd8eff3ba2caca53ea72cf3cc87a7797771dd7d2 (diff) | |
block: add an optional probe callback to major_names
Add a callback to the major_names array that allows a driver to override
how to probe for dev_t that doesn't currently have a gendisk registered.
This will help separating the lookup of the gendisk by dev_t vs probe
action for a not currently registered dev_t.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/genhd.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 52eb592c874a..811d0f83c4cf 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -367,7 +367,10 @@ extern void blk_unregister_region(dev_t devt, unsigned long range); #define alloc_disk(minors) alloc_disk_node(minors, NUMA_NO_NODE) -int register_blkdev(unsigned int major, const char *name); +int __register_blkdev(unsigned int major, const char *name, + void (*probe)(dev_t devt)); +#define register_blkdev(major, name) \ + __register_blkdev(major, name, NULL) void unregister_blkdev(unsigned int major, const char *name); void revalidate_disk_size(struct gendisk *disk, bool verbose); |