LINUX_RAID_PARTITION = 0xfd, /* autodetect RAID partition */
SOLARIS_X86_PARTITION = LINUX_SWAP_PARTITION,
+ NEW_SOLARIS_X86_PARTITION = 0xbf,
DM6_AUX1PARTITION = 0x51, /* no DDO: use xlated geom */
DM6_AUX3PARTITION = 0x53, /* no DDO: use xlated geom */
#endif
};
+/* Structure for sysfs attributes on block devices */
+struct disk_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct gendisk *, char *);
+};
+
/*
* Macros to operate on percpu disk statistics:
- * Since writes to disk_stats are serialised through the queue_lock,
- * smp_processor_id() should be enough to get to the per_cpu versions
- * of statistics counters
+ *
+ * The __ variants should only be called in critical sections. The full
+ * variants disable/enable preemption.
*/
#ifdef CONFIG_SMP
-#define disk_stat_add(gendiskp, field, addnd) \
+#define __disk_stat_add(gendiskp, field, addnd) \
(per_cpu_ptr(gendiskp->dkstats, smp_processor_id())->field += addnd)
+
#define disk_stat_read(gendiskp, field) \
({ \
typeof(gendiskp->dkstats->field) res = 0; \
}
#else
-#define disk_stat_add(gendiskp, field, addnd) (gendiskp->dkstats.field += addnd)
+#define __disk_stat_add(gendiskp, field, addnd) \
+ (gendiskp->dkstats.field += addnd)
#define disk_stat_read(gendiskp, field) (gendiskp->dkstats.field)
static inline void disk_stat_set_all(struct gendisk *gendiskp, int value) {
}
#endif
-#define disk_stat_inc(gendiskp, field) disk_stat_add(gendiskp, field, 1)
+#define disk_stat_add(gendiskp, field, addnd) \
+ do { \
+ preempt_disable(); \
+ __disk_stat_add(gendiskp, field, addnd); \
+ preempt_enable(); \
+ } while (0)
+
+#define __disk_stat_dec(gendiskp, field) __disk_stat_add(gendiskp, field, -1)
#define disk_stat_dec(gendiskp, field) disk_stat_add(gendiskp, field, -1)
+
+#define __disk_stat_inc(gendiskp, field) __disk_stat_add(gendiskp, field, 1)
+#define disk_stat_inc(gendiskp, field) disk_stat_add(gendiskp, field, 1)
+
+#define __disk_stat_sub(gendiskp, field, subnd) \
+ __disk_stat_add(gendiskp, field, -subnd)
#define disk_stat_sub(gendiskp, field, subnd) \
disk_stat_add(gendiskp, field, -subnd)
extern void disk_round_stats(struct gendisk *disk);
/* drivers/block/genhd.c */
+extern int get_blkdev_list(char *);
extern void add_disk(struct gendisk *disk);
extern void del_gendisk(struct gendisk *gp);
extern void unlink_gendisk(struct gendisk *gp);