diff options
| author | Christoph Hellwig <hch@lst.de> | 2021-11-22 14:06:24 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-11-29 06:38:35 -0700 |
| commit | 430cc5d3ab4d0ba0bd011cfbb0035e46ba92920c (patch) | |
| tree | a5d0728949afdf4aca1e12b45e951c35dc49718b /include/linux/genhd.h | |
| parent | 9f18db572c97bc327b63528d195fdb252f47e9de (diff) | |
block: cleanup the GENHD_FL_* definitions
Switch to an enum and tidy up the documentation.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20211122130625.1136848-14-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 | 32 |
1 files changed, 14 insertions, 18 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h index b8ced80178d6..6906a45bc761 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -39,28 +39,24 @@ struct partition_meta_info { /** * DOC: genhd capability flags * - * ``GENHD_FL_REMOVABLE`` (0x0001): indicates that the block device - * gives access to removable media. - * When set, the device remains present even when media is not - * inserted. - * Must not be set for devices which are removed entirely when the + * ``GENHD_FL_REMOVABLE``: indicates that the block device gives access to + * removable media. When set, the device remains present even when media is not + * inserted. Shall not be set for devices which are removed entirely when the * media is removed. * - * ``GENHD_FL_NO_PART`` (0x0200): partition support is disabled. - * The kernel will not scan for partitions from add_disk, and users - * can't add partitions manually. + * ``GENHD_FL_HIDDEN``: the block device is hidden; it doesn't produce events, + * doesn't appear in sysfs, and can't be opened from userspace or using + * blkdev_get*. Used for the underlying components of multipath devices. + * + * ``GENHD_FL_NO_PART``: partition support is disabled. The kernel will not + * scan for partitions from add_disk, and users can't add partitions manually. * - * ``GENHD_FL_HIDDEN`` (0x0400): the block device is hidden; it - * doesn't produce events, doesn't appear in sysfs, and doesn't have - * an associated ``bdev``. - * Implies ``GENHD_FL_NO_PART``. - * Used for multipath devices. */ -#define GENHD_FL_REMOVABLE 0x0001 -/* 2 is unused (used to be GENHD_FL_DRIVERFS) */ -/* 4 is unused (used to be GENHD_FL_MEDIA_CHANGE_NOTIFY) */ -#define GENHD_FL_NO_PART 0x0200 -#define GENHD_FL_HIDDEN 0x0400 +enum { + GENHD_FL_REMOVABLE = 1 << 0, + GENHD_FL_HIDDEN = 1 << 1, + GENHD_FL_NO_PART = 1 << 2, +}; enum { DISK_EVENT_MEDIA_CHANGE = 1 << 0, /* media changed */ |