http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/raid/raid10.h

#ifndef _RAID10_H #define _RAID10_H #include <linux/raid/md.h> typedef struct mirror_info mirror_info_t; struct mirror_info { mdk_rdev_t *rdev; sector_t head_position; }; typedef struct r10bio_s r10bio_t; struct r10_private_data_s { mddev_t *mddev; mirror_info_t *mirrors; int raid_disks; int working_disks; spinlock_t device_lock; /* geometry */ int near_copies; /* number of copies layed out raid0 style */ int far_copies; /* number of copies layed out * at large strides across drives */ int copies; /* near_copies * far_copies. * must be <= raid_disks */ sector_t stride; /* distance between far copies. * This is size / far_copies */ int chunk_shift; /* shift from chunks to sectors */ sector_t chunk_mask; struct list_head retry_list; /* queue pending writes and submit them on unplug */ struct bio_list pending_bio_list; spinlock_t resync_lock; int nr_pending; int nr_waiting; int nr_queued; int barrier; sector_t next_resync; int fullsync; /* set to 1 if a full sync is needed, * (fresh device added). * Cleared when a sync completes. */ wait_queue_head_t wait_barrier; mempool_t *r10bio_pool; mempool_t *r10buf_pool; struct page *tmppage; }; typedef struct r10_private_data_s conf_t; /* * this is the only point in the RAID code where we violate * C type safety. mddev->private is an 'opaque' pointer. */ #define mddev_to_conf(mddev) ((conf_t *) mddev->private) /* * this is our 'private' RAID10 bio. * * it contains information about what kind of IO operations were started * for this RAID10 operation, and about their status: */ struct r10bio_s { atomic_t remaining; /* 'have we finished' count, * used from IRQ handlers */ sector_t sector; /* virtual sector number */ int sectors; unsigned long state; mddev_t *mddev; /* * original bio going to /dev/mdx */ struct bio *master_bio; /* * if the IO is in READ direction, then this is where we read */ int read_slot; struct list_head retry_list; /* * if the IO is in WRITE direction, then multiple bios are used, * one for each copy. * When resyncing we also use one for each copy. * When reconstructing, we use 2 bios, one for read, one for write. * We choose the number when they are allocated. */ struct { struct bio *bio; sector_t addr; int devnum; } devs[0]; }; /* when we get a read error on a read-only array, we redirect to another * device without failing the first device, or trying to over-write to * correct the read error. To keep track of bad blocks on a per-bio * level, we store IO_BLOCKED in the appropriate 'bios' pointer */ #define IO_BLOCKED ((struct bio*)1) /* bits for r10bio.state */ #define R10BIO_Uptodate 0 #define R10BIO_IsSync 1 #define R10BIO_IsRecover 2 #define R10BIO_Degraded 3 #endif