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| author | Tejun Heo <tj@kernel.org> | 2008-08-25 19:56:16 +0900 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 08:56:08 +0200 |
| commit | 689d6fac40b41c7bf154f362deaf442548e4dc81 (patch) | |
| tree | 5989dc5767f657272194ee8c7d69c6db1e62dab7 /include/linux/genhd.h | |
| parent | 540eed5637b766bb1e881ef744c42617760b4815 (diff) | |
| download | linux-3.10-689d6fac40b41c7bf154f362deaf442548e4dc81.tar.gz linux-3.10-689d6fac40b41c7bf154f362deaf442548e4dc81.tar.bz2 linux-3.10-689d6fac40b41c7bf154f362deaf442548e4dc81.zip | |
block: replace @ext_minors with GENHD_FL_EXT_DEVT
With previous changes, it's meaningless to limit the number of
partitions. Replace @ext_minors with GENHD_FL_EXT_DEVT such that
setting the flag allows the disk to have maximum number of allowed
partitions (only limited by the number of entries in parsed_partitions
as determined by MAX_PART constant).
This kills not-too-pretty alloc_disk_ext[_node]() functions and makes
@minors parameter to alloc_disk[_node]() unnecessary. The parameter
is left alone to avoid disturbing the users.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include/linux/genhd.h')
| -rw-r--r-- | include/linux/genhd.h | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h index ecf649c3dee..04524c213de 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -58,6 +58,8 @@ enum { UNIXWARE_PARTITION = 0x63, /* Same as GNU_HURD and SCO Unix */ }; +#define DISK_MAX_PARTS 256 + #include <linux/major.h> #include <linux/device.h> #include <linux/smp.h> @@ -112,6 +114,7 @@ struct hd_struct { #define GENHD_FL_CD 8 #define GENHD_FL_UP 16 #define GENHD_FL_SUPPRESS_PARTITION_INFO 32 +#define GENHD_FL_EXT_DEVT 64 /* allow extended devt */ #define BLK_SCSI_MAX_CMDS (256) #define BLK_SCSI_CMD_PER_LONG (BLK_SCSI_MAX_CMDS / (sizeof(long) * 8)) @@ -129,15 +132,13 @@ struct disk_part_tbl { }; struct gendisk { - /* major, first_minor, minors and ext_minors are input - * parameters only, don't use directly. Use disk_devt() and - * disk_max_parts(). + /* major, first_minor and minors are input parameters only, + * don't use directly. Use disk_devt() and disk_max_parts(). */ int major; /* major number of driver */ int first_minor; int minors; /* maximum number of minors, =1 for * disks that can't be partitioned. */ - int ext_minors; /* number of extended dynamic minors */ char disk_name[32]; /* name of major driver */ @@ -180,7 +181,9 @@ static inline struct gendisk *part_to_disk(struct hd_struct *part) static inline int disk_max_parts(struct gendisk *disk) { - return disk->minors + disk->ext_minors; + if (disk->flags & GENHD_FL_EXT_DEVT) + return DISK_MAX_PARTS; + return disk->minors; } static inline bool disk_partitionable(struct gendisk *disk) @@ -527,9 +530,6 @@ extern void printk_all_partitions(void); extern struct gendisk *alloc_disk_node(int minors, int node_id); extern struct gendisk *alloc_disk(int minors); -extern struct gendisk *alloc_disk_ext_node(int minors, int ext_minrs, - int node_id); -extern struct gendisk *alloc_disk_ext(int minors, int ext_minors); extern struct kobject *get_disk(struct gendisk *disk); extern void put_disk(struct gendisk *disk); extern void blk_register_region(dev_t devt, unsigned long range, |