diff options
| author | Alexander Viro <viro@math.psu.edu> | 2002-09-21 02:51:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@home.transmeta.com> | 2002-09-21 02:51:01 -0700 |
| commit | 443ac9b2957964cc7a8a6442f3dec2a286a0e471 (patch) | |
| tree | 0a48413f761ba749e657ff4388de54aaf580548a /include | |
| parent | ceb1ee4c055c9a0debecf2b1759b70ce65abf27d (diff) | |
[PATCH] beginning of probe_disk() and gendisks for floppy
That's a tricky one and large part of that stuff is temporary - it will be
replaced as soon as we have gendisks for all block devices and get sane
refcounting for gendisks.
* we add per-major lists of gendisks; get_gendisk() looks into
appropriate list instead of looking through the list of all gendisks.
* we allow driver to override that search - it can call
blk_set_probe(major, probe) and then gendisk will call probe(minor).
blk_set_probe(major, NULL) restores the default behaviour.
* floppy.c switched to use of gendisks; we have one gendisk per
disk and let floppy_find(minor) return the right one.
Note that final mechanism will involve a similar construction
but floppy.c is actually the least interesting application - places
where it will really play will include stuff like loading the right
high-level driver when we open /dev/hdX, etc. And it won't be major-based...
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/genhd.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 8632a84676e0..33cfbe2f1108 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -81,6 +81,7 @@ struct gendisk { struct gendisk *next; struct block_device_operations *fops; sector_t capacity; + struct list_head list; int flags; int number; /* devfs crap */ @@ -260,6 +261,9 @@ char *disk_name (struct gendisk *hd, int part, char *buf); extern int rescan_partitions(struct gendisk *disk, struct block_device *bdev); extern void update_partition(struct gendisk *disk, int part); +/* will go away */ +extern void blk_set_probe(int major, struct gendisk *(p)(int)); + static inline unsigned int disk_index (kdev_t dev) { struct gendisk *g = get_gendisk(dev); |