X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fmd%2Fraid1.c;h=e07ce2e033a95c48ba2c9a78c519640743220e2d;hb=04788507686d184d8166918b70ef52311bc36dcb;hp=253b09c86eca85d7ce379815d45c5605279be4fb;hpb=bff61975b3d6c18ee31457cc5b4d73042f44915f;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 253b09c..e07ce2e 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -33,9 +33,8 @@ #include #include -#include #include -#include "dm-bio-list.h" +#include "md.h" #include "raid1.h" #include "bitmap.h" @@ -65,7 +64,7 @@ static void * r1bio_pool_alloc(gfp_t gfp_flags, void *data) /* allocate a r1bio with room for raid_disks entries in the bios array */ r1_bio = kzalloc(size, gfp_flags); - if (!r1_bio) + if (!r1_bio && pi->mddev) unplug_slaves(pi->mddev); return r1_bio; @@ -123,6 +122,7 @@ static void * r1buf_pool_alloc(gfp_t gfp_flags, void *data) goto out_free_pages; bio->bi_io_vec[i].bv_page = page; + bio->bi_vcnt = i+1; } } /* If not user-requests, copy the page pointers to all bios */ @@ -138,9 +138,9 @@ static void * r1buf_pool_alloc(gfp_t gfp_flags, void *data) return r1_bio; out_free_pages: - for (i=0; i < RESYNC_PAGES ; i++) - for (j=0 ; j < pi->raid_disks; j++) - safe_put_page(r1_bio->bios[j]->bi_io_vec[i].bv_page); + for (j=0 ; j < pi->raid_disks; j++) + for (i=0; i < r1_bio->bios[j]->bi_vcnt ; i++) + put_page(r1_bio->bios[j]->bi_io_vec[i].bv_page); j = -1; out_free_bio: while ( ++j < pi->raid_disks ) @@ -182,7 +182,7 @@ static void put_all_bios(conf_t *conf, r1bio_t *r1_bio) static void free_r1bio(r1bio_t *r1_bio) { - conf_t *conf = mddev_to_conf(r1_bio->mddev); + conf_t *conf = r1_bio->mddev->private; /* * Wake up any possible resync thread that waits for the device @@ -196,7 +196,7 @@ static void free_r1bio(r1bio_t *r1_bio) static void put_buf(r1bio_t *r1_bio) { - conf_t *conf = mddev_to_conf(r1_bio->mddev); + conf_t *conf = r1_bio->mddev->private; int i; for (i=0; iraid_disks; i++) { @@ -214,7 +214,7 @@ static void reschedule_retry(r1bio_t *r1_bio) { unsigned long flags; mddev_t *mddev = r1_bio->mddev; - conf_t *conf = mddev_to_conf(mddev); + conf_t *conf = mddev->private; spin_lock_irqsave(&conf->device_lock, flags); list_add(&r1_bio->retry_list, &conf->retry_list); @@ -253,7 +253,7 @@ static void raid_end_bio_io(r1bio_t *r1_bio) */ static inline void update_head_pos(int disk, r1bio_t *r1_bio) { - conf_t *conf = mddev_to_conf(r1_bio->mddev); + conf_t *conf = r1_bio->mddev->private; conf->mirrors[disk].head_position = r1_bio->sector + (r1_bio->sectors); @@ -264,7 +264,7 @@ static void raid1_end_read_request(struct bio *bio, int error) int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private); int mirror; - conf_t *conf = mddev_to_conf(r1_bio->mddev); + conf_t *conf = r1_bio->mddev->private; mirror = r1_bio->read_disk; /* @@ -309,7 +309,7 @@ static void raid1_end_write_request(struct bio *bio, int error) int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private); int mirror, behind = test_bit(R1BIO_BehindIO, &r1_bio->state); - conf_t *conf = mddev_to_conf(r1_bio->mddev); + conf_t *conf = r1_bio->mddev->private; struct bio *to_put = NULL; @@ -541,7 +541,7 @@ static int read_balance(conf_t *conf, r1bio_t *r1_bio) static void unplug_slaves(mddev_t *mddev) { - conf_t *conf = mddev_to_conf(mddev); + conf_t *conf = mddev->private; int i; rcu_read_lock(); @@ -573,9 +573,12 @@ static void raid1_unplug(struct request_queue *q) static int raid1_congested(void *data, int bits) { mddev_t *mddev = data; - conf_t *conf = mddev_to_conf(mddev); + conf_t *conf = mddev->private; int i, ret = 0; + if (mddev_congested(mddev, bits)) + return 1; + rcu_read_lock(); for (i = 0; i < mddev->raid_disks; i++) { mdk_rdev_t *rdev = rcu_dereference(conf->mirrors[i].rdev); @@ -585,7 +588,7 @@ static int raid1_congested(void *data, int bits) /* Note the '|| 1' - when read_balance prefers * non-congested targets, it can be removed */ - if ((bits & (1<backing_dev_info, bits); else ret &= bdi_congested(&q->backing_dev_info, bits); @@ -772,7 +775,7 @@ do_sync_io: static int make_request(struct request_queue *q, struct bio * bio) { mddev_t *mddev = q->queuedata; - conf_t *conf = mddev_to_conf(mddev); + conf_t *conf = mddev->private; mirror_info_t *mirror; r1bio_t *r1_bio; struct bio *read_bio; @@ -782,8 +785,9 @@ static int make_request(struct request_queue *q, struct bio * bio) struct bio_list bl; struct page **behind_pages = NULL; const int rw = bio_data_dir(bio); - const int do_sync = bio_sync(bio); - int cpu, do_barriers; + const bool do_sync = bio_rw_flagged(bio, BIO_RW_SYNCIO); + int cpu; + bool do_barriers; mdk_rdev_t *blocked_rdev; /* @@ -797,7 +801,8 @@ static int make_request(struct request_queue *q, struct bio * bio) md_write_start(mddev, bio); /* wait on superblock update early */ - if (unlikely(!mddev->barriers_work && bio_barrier(bio))) { + if (unlikely(!mddev->barriers_work && + bio_rw_flagged(bio, BIO_RW_BARRIER))) { if (rw == WRITE) md_write_end(mddev); bio_endio(bio, -EOPNOTSUPP); @@ -849,7 +854,7 @@ static int make_request(struct request_queue *q, struct bio * bio) read_bio->bi_sector = r1_bio->sector + mirror->rdev->data_offset; read_bio->bi_bdev = mirror->rdev->bdev; read_bio->bi_end_io = raid1_end_read_request; - read_bio->bi_rw = READ | do_sync; + read_bio->bi_rw = READ | (do_sync << BIO_RW_SYNCIO); read_bio->bi_private = r1_bio; generic_make_request(read_bio); @@ -925,7 +930,7 @@ static int make_request(struct request_queue *q, struct bio * bio) atomic_set(&r1_bio->remaining, 0); atomic_set(&r1_bio->behind_remaining, 0); - do_barriers = bio_barrier(bio); + do_barriers = bio_rw_flagged(bio, BIO_RW_BARRIER); if (do_barriers) set_bit(R1BIO_Barrier, &r1_bio->state); @@ -941,7 +946,8 @@ static int make_request(struct request_queue *q, struct bio * bio) mbio->bi_sector = r1_bio->sector + conf->mirrors[i].rdev->data_offset; mbio->bi_bdev = conf->mirrors[i].rdev->bdev; mbio->bi_end_io = raid1_end_write_request; - mbio->bi_rw = WRITE | do_barriers | do_sync; + mbio->bi_rw = WRITE | (do_barriers << BIO_RW_BARRIER) | + (do_sync << BIO_RW_SYNCIO); mbio->bi_private = r1_bio; if (behind_pages) { @@ -991,7 +997,7 @@ static int make_request(struct request_queue *q, struct bio * bio) static void status(struct seq_file *seq, mddev_t *mddev) { - conf_t *conf = mddev_to_conf(mddev); + conf_t *conf = mddev->private; int i; seq_printf(seq, " [%d/%d] [", conf->raid_disks, @@ -1010,7 +1016,7 @@ static void status(struct seq_file *seq, mddev_t *mddev) static void error(mddev_t *mddev, mdk_rdev_t *rdev) { char b[BDEVNAME_SIZE]; - conf_t *conf = mddev_to_conf(mddev); + conf_t *conf = mddev->private; /* * If it is not operational, then we have already marked it as dead @@ -1123,14 +1129,14 @@ static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) for (mirror = first; mirror <= last; mirror++) if ( !(p=conf->mirrors+mirror)->rdev) { - blk_queue_stack_limits(mddev->queue, - rdev->bdev->bd_disk->queue); + disk_stack_limits(mddev->gendisk, rdev->bdev, + rdev->data_offset << 9); /* as we don't honour merge_bvec_fn, we must never risk * violating it, so limit ->max_sector to one PAGE, as * a one page request is never in violation. */ if (rdev->bdev->bd_disk->queue->merge_bvec_fn && - mddev->queue->max_sectors > (PAGE_SIZE>>9)) + queue_max_sectors(mddev->queue) > (PAGE_SIZE>>9)) blk_queue_max_sectors(mddev->queue, PAGE_SIZE>>9); p->head_position = 0; @@ -1144,7 +1150,7 @@ static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) rcu_assign_pointer(p->rdev, rdev); break; } - + md_integrity_add_rdev(rdev, mddev); print_conf(conf); return err; } @@ -1178,7 +1184,9 @@ static int raid1_remove_disk(mddev_t *mddev, int number) /* lost the race, try later */ err = -EBUSY; p->rdev = rdev; + goto abort; } + md_integrity_register(mddev); } abort: @@ -1214,7 +1222,7 @@ static void end_sync_write(struct bio *bio, int error) int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private); mddev_t *mddev = r1_bio->mddev; - conf_t *conf = mddev_to_conf(mddev); + conf_t *conf = mddev->private; int i; int mirror=0; @@ -1248,7 +1256,7 @@ static void end_sync_write(struct bio *bio, int error) static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio) { - conf_t *conf = mddev_to_conf(mddev); + conf_t *conf = mddev->private; int i; int disks = conf->raid_disks; struct bio *bio, *wbio; @@ -1562,7 +1570,7 @@ static void raid1d(mddev_t *mddev) r1bio_t *r1_bio; struct bio *bio; unsigned long flags; - conf_t *conf = mddev_to_conf(mddev); + conf_t *conf = mddev->private; struct list_head *head = &conf->retry_list; int unplug=0; mdk_rdev_t *rdev; @@ -1585,7 +1593,7 @@ static void raid1d(mddev_t *mddev) spin_unlock_irqrestore(&conf->device_lock, flags); mddev = r1_bio->mddev; - conf = mddev_to_conf(mddev); + conf = mddev->private; if (test_bit(R1BIO_IsSync, &r1_bio->state)) { sync_request_write(mddev, r1_bio); unplug = 1; @@ -1598,7 +1606,7 @@ static void raid1d(mddev_t *mddev) * We already have a nr_pending reference on these rdevs. */ int i; - const int do_sync = bio_sync(r1_bio->master_bio); + const bool do_sync = bio_rw_flagged(r1_bio->master_bio, BIO_RW_SYNCIO); clear_bit(R1BIO_BarrierRetry, &r1_bio->state); clear_bit(R1BIO_Barrier, &r1_bio->state); for (i=0; i < conf->raid_disks; i++) @@ -1619,7 +1627,8 @@ static void raid1d(mddev_t *mddev) conf->mirrors[i].rdev->data_offset; bio->bi_bdev = conf->mirrors[i].rdev->bdev; bio->bi_end_io = raid1_end_write_request; - bio->bi_rw = WRITE | do_sync; + bio->bi_rw = WRITE | + (do_sync << BIO_RW_SYNCIO); bio->bi_private = r1_bio; r1_bio->bios[i] = bio; generic_make_request(bio); @@ -1641,18 +1650,19 @@ static void raid1d(mddev_t *mddev) r1_bio->sector, r1_bio->sectors); unfreeze_array(conf); - } + } else + md_error(mddev, + conf->mirrors[r1_bio->read_disk].rdev); bio = r1_bio->bios[r1_bio->read_disk]; - if ((disk=read_balance(conf, r1_bio)) == -1 || - disk == r1_bio->read_disk) { + if ((disk=read_balance(conf, r1_bio)) == -1) { printk(KERN_ALERT "raid1: %s: unrecoverable I/O" " read error for block %llu\n", bdevname(bio->bi_bdev,b), (unsigned long long)r1_bio->sector); raid_end_bio_io(r1_bio); } else { - const int do_sync = bio_sync(r1_bio->master_bio); + const bool do_sync = bio_rw_flagged(r1_bio->master_bio, BIO_RW_SYNCIO); r1_bio->bios[r1_bio->read_disk] = mddev->ro ? IO_BLOCKED : NULL; r1_bio->read_disk = disk; @@ -1668,12 +1678,13 @@ static void raid1d(mddev_t *mddev) bio->bi_sector = r1_bio->sector + rdev->data_offset; bio->bi_bdev = rdev->bdev; bio->bi_end_io = raid1_end_read_request; - bio->bi_rw = READ | do_sync; + bio->bi_rw = READ | (do_sync << BIO_RW_SYNCIO); bio->bi_private = r1_bio; unplug = 1; generic_make_request(bio); } } + cond_resched(); } if (unplug) unplug_slaves(mddev); @@ -1706,7 +1717,7 @@ static int init_resync(conf_t *conf) static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, int go_faster) { - conf_t *conf = mddev_to_conf(mddev); + conf_t *conf = mddev->private; r1bio_t *r1_bio; struct bio *bio; sector_t max_sector, nr_sectors; @@ -1726,7 +1737,7 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i return 0; } - max_sector = mddev->size << 1; + max_sector = mddev->dev_sectors; if (sector_nr >= max_sector) { /* If we aborted, we need to abort the * sync on the 'current' bitmap chunk (there will @@ -1922,6 +1933,14 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i return nr_sectors; } +static sector_t raid1_size(mddev_t *mddev, sector_t sectors, int raid_disks) +{ + if (sectors) + return sectors; + + return mddev->dev_sectors; +} + static int run(mddev_t *mddev) { conf_t *conf; @@ -1961,13 +1980,14 @@ static int run(mddev_t *mddev) conf->poolinfo = kmalloc(sizeof(*conf->poolinfo), GFP_KERNEL); if (!conf->poolinfo) goto out_no_mem; - conf->poolinfo->mddev = mddev; + conf->poolinfo->mddev = NULL; conf->poolinfo->raid_disks = mddev->raid_disks; conf->r1bio_pool = mempool_create(NR_RAID1_BIOS, r1bio_pool_alloc, r1bio_pool_free, conf->poolinfo); if (!conf->r1bio_pool) goto out_no_mem; + conf->poolinfo->mddev = mddev; spin_lock_init(&conf->device_lock); mddev->queue->queue_lock = &conf->device_lock; @@ -1980,15 +2000,14 @@ static int run(mddev_t *mddev) disk = conf->mirrors + disk_idx; disk->rdev = rdev; - - blk_queue_stack_limits(mddev->queue, - rdev->bdev->bd_disk->queue); + disk_stack_limits(mddev->gendisk, rdev->bdev, + rdev->data_offset << 9); /* as we don't honour merge_bvec_fn, we must never risk * violating it, so limit ->max_sector to one PAGE, as * a one page request is never in violation. */ if (rdev->bdev->bd_disk->queue->merge_bvec_fn && - mddev->queue->max_sectors > (PAGE_SIZE>>9)) + queue_max_sectors(mddev->queue) > (PAGE_SIZE>>9)) blk_queue_max_sectors(mddev->queue, PAGE_SIZE>>9); disk->head_position = 0; @@ -2036,7 +2055,7 @@ static int run(mddev_t *mddev) conf->last_used = j; - mddev->thread = md_register_thread(raid1d, mddev, "%s_raid1"); + mddev->thread = md_register_thread(raid1d, mddev, NULL); if (!mddev->thread) { printk(KERN_ERR "raid1: couldn't allocate thread for %s\n", @@ -2044,6 +2063,10 @@ static int run(mddev_t *mddev) goto out_free_conf; } + if (mddev->recovery_cp != MaxSector) + printk(KERN_NOTICE "raid1: %s is not clean" + " -- starting background reconstruction\n", + mdname(mddev)); printk(KERN_INFO "raid1: raid set %s active with %d out of %d mirrors\n", mdname(mddev), mddev->raid_disks - mddev->degraded, @@ -2051,12 +2074,12 @@ static int run(mddev_t *mddev) /* * Ok, everything is just fine now */ - mddev->array_sectors = mddev->size * 2; + md_set_array_sectors(mddev, raid1_size(mddev, 0, 0)); mddev->queue->unplug_fn = raid1_unplug; mddev->queue->backing_dev_info.congested_fn = raid1_congested; mddev->queue->backing_dev_info.congested_data = mddev; - + md_integrity_register(mddev); return 0; out_no_mem: @@ -2079,7 +2102,7 @@ out: static int stop(mddev_t *mddev) { - conf_t *conf = mddev_to_conf(mddev); + conf_t *conf = mddev->private; struct bitmap *bitmap = mddev->bitmap; int behind_wait = 0; @@ -2092,6 +2115,9 @@ static int stop(mddev_t *mddev) /* need to kick something here to make sure I/O goes? */ } + raise_barrier(conf); + lower_barrier(conf); + md_unregister_thread(mddev->thread); mddev->thread = NULL; blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/ @@ -2113,15 +2139,18 @@ static int raid1_resize(mddev_t *mddev, sector_t sectors) * any io in the removed space completes, but it hardly seems * worth it. */ - mddev->array_sectors = sectors; + md_set_array_sectors(mddev, raid1_size(mddev, sectors, 0)); + if (mddev->array_sectors > raid1_size(mddev, sectors, 0)) + return -EINVAL; set_capacity(mddev->gendisk, mddev->array_sectors); mddev->changed = 1; - if (mddev->array_sectors / 2 > mddev->size && + revalidate_disk(mddev->gendisk); + if (sectors > mddev->dev_sectors && mddev->recovery_cp == MaxSector) { - mddev->recovery_cp = mddev->size << 1; + mddev->recovery_cp = mddev->dev_sectors; set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); } - mddev->size = mddev->array_sectors / 2; + mddev->dev_sectors = sectors; mddev->resync_max_sectors = sectors; return 0; } @@ -2142,16 +2171,16 @@ static int raid1_reshape(mddev_t *mddev) mempool_t *newpool, *oldpool; struct pool_info *newpoolinfo; mirror_info_t *newmirrors; - conf_t *conf = mddev_to_conf(mddev); + conf_t *conf = mddev->private; int cnt, raid_disks; unsigned long flags; int d, d2, err; /* Cannot change chunk_size, layout, or level */ - if (mddev->chunk_size != mddev->new_chunk || + if (mddev->chunk_sectors != mddev->new_chunk_sectors || mddev->layout != mddev->new_layout || mddev->level != mddev->new_level) { - mddev->new_chunk = mddev->chunk_size; + mddev->new_chunk_sectors = mddev->chunk_sectors; mddev->new_layout = mddev->layout; mddev->new_level = mddev->level; return -EINVAL; @@ -2239,7 +2268,7 @@ static int raid1_reshape(mddev_t *mddev) static void raid1_quiesce(mddev_t *mddev, int state) { - conf_t *conf = mddev_to_conf(mddev); + conf_t *conf = mddev->private; switch(state) { case 1: @@ -2267,6 +2296,7 @@ static struct mdk_personality raid1_personality = .spare_active = raid1_spare_active, .sync_request = sync_request, .resize = raid1_resize, + .size = raid1_size, .check_reshape = raid1_reshape, .quiesce = raid1_quiesce, };