diff options
author | 2016-04-11 10:41:07 +0300 | |
---|---|---|
committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/md/raid10.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/md/raid10.c')
-rw-r--r-- | kernel/drivers/md/raid10.c | 291 |
1 files changed, 107 insertions, 184 deletions
diff --git a/kernel/drivers/md/raid10.c b/kernel/drivers/md/raid10.c index fe0122771..ce959b4ae 100644 --- a/kernel/drivers/md/raid10.c +++ b/kernel/drivers/md/raid10.c @@ -39,6 +39,7 @@ * far_copies (stored in second byte of layout) * far_offset (stored in bit 16 of layout ) * use_far_sets (stored in bit 17 of layout ) + * use_far_sets_bugfixed (stored in bit 18 of layout ) * * The data to be stored is divided into chunks using chunksize. Each device * is divided into far_copies sections. In each section, chunks are laid out @@ -101,7 +102,7 @@ static int _enough(struct r10conf *conf, int previous, int ignore); static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr, int *skipped); static void reshape_request_write(struct mddev *mddev, struct r10bio *r10_bio); -static void end_reshape_write(struct bio *bio, int error); +static void end_reshape_write(struct bio *bio); static void end_reshape(struct r10conf *conf); static void * r10bio_pool_alloc(gfp_t gfp_flags, void *data) @@ -307,9 +308,9 @@ static void raid_end_bio_io(struct r10bio *r10_bio) } else done = 1; if (!test_bit(R10BIO_Uptodate, &r10_bio->state)) - clear_bit(BIO_UPTODATE, &bio->bi_flags); + bio->bi_error = -EIO; if (done) { - bio_endio(bio, 0); + bio_endio(bio); /* * Wake up any possible resync thread that waits for the device * to go idle. @@ -358,9 +359,9 @@ static int find_bio_disk(struct r10conf *conf, struct r10bio *r10_bio, return r10_bio->devs[slot].devnum; } -static void raid10_end_read_request(struct bio *bio, int error) +static void raid10_end_read_request(struct bio *bio) { - int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); + int uptodate = !bio->bi_error; struct r10bio *r10_bio = bio->bi_private; int slot, dev; struct md_rdev *rdev; @@ -438,9 +439,8 @@ static void one_write_done(struct r10bio *r10_bio) } } -static void raid10_end_write_request(struct bio *bio, int error) +static void raid10_end_write_request(struct bio *bio) { - int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); struct r10bio *r10_bio = bio->bi_private; int dev; int dec_rdev = 1; @@ -460,7 +460,7 @@ static void raid10_end_write_request(struct bio *bio, int error) /* * this branch is our 'one mirror IO has finished' event handler: */ - if (!uptodate) { + if (bio->bi_error) { if (repl) /* Never record new bad blocks to replacement, * just fail it. @@ -672,93 +672,6 @@ static sector_t raid10_find_virt(struct r10conf *conf, sector_t sector, int dev) return (vchunk << geo->chunk_shift) + offset; } -/** - * raid10_mergeable_bvec -- tell bio layer if a two requests can be merged - * @mddev: the md device - * @bvm: properties of new bio - * @biovec: the request that could be merged to it. - * - * Return amount of bytes we can accept at this offset - * This requires checking for end-of-chunk if near_copies != raid_disks, - * and for subordinate merge_bvec_fns if merge_check_needed. - */ -static int raid10_mergeable_bvec(struct mddev *mddev, - struct bvec_merge_data *bvm, - struct bio_vec *biovec) -{ - struct r10conf *conf = mddev->private; - sector_t sector = bvm->bi_sector + get_start_sect(bvm->bi_bdev); - int max; - unsigned int chunk_sectors; - unsigned int bio_sectors = bvm->bi_size >> 9; - struct geom *geo = &conf->geo; - - chunk_sectors = (conf->geo.chunk_mask & conf->prev.chunk_mask) + 1; - if (conf->reshape_progress != MaxSector && - ((sector >= conf->reshape_progress) != - conf->mddev->reshape_backwards)) - geo = &conf->prev; - - if (geo->near_copies < geo->raid_disks) { - max = (chunk_sectors - ((sector & (chunk_sectors - 1)) - + bio_sectors)) << 9; - if (max < 0) - /* bio_add cannot handle a negative return */ - max = 0; - if (max <= biovec->bv_len && bio_sectors == 0) - return biovec->bv_len; - } else - max = biovec->bv_len; - - if (mddev->merge_check_needed) { - struct { - struct r10bio r10_bio; - struct r10dev devs[conf->copies]; - } on_stack; - struct r10bio *r10_bio = &on_stack.r10_bio; - int s; - if (conf->reshape_progress != MaxSector) { - /* Cannot give any guidance during reshape */ - if (max <= biovec->bv_len && bio_sectors == 0) - return biovec->bv_len; - return 0; - } - r10_bio->sector = sector; - raid10_find_phys(conf, r10_bio); - rcu_read_lock(); - for (s = 0; s < conf->copies; s++) { - int disk = r10_bio->devs[s].devnum; - struct md_rdev *rdev = rcu_dereference( - conf->mirrors[disk].rdev); - if (rdev && !test_bit(Faulty, &rdev->flags)) { - struct request_queue *q = - bdev_get_queue(rdev->bdev); - if (q->merge_bvec_fn) { - bvm->bi_sector = r10_bio->devs[s].addr - + rdev->data_offset; - bvm->bi_bdev = rdev->bdev; - max = min(max, q->merge_bvec_fn( - q, bvm, biovec)); - } - } - rdev = rcu_dereference(conf->mirrors[disk].replacement); - if (rdev && !test_bit(Faulty, &rdev->flags)) { - struct request_queue *q = - bdev_get_queue(rdev->bdev); - if (q->merge_bvec_fn) { - bvm->bi_sector = r10_bio->devs[s].addr - + rdev->data_offset; - bvm->bi_bdev = rdev->bdev; - max = min(max, q->merge_bvec_fn( - q, bvm, biovec)); - } - } - } - rcu_read_unlock(); - } - return max; -} - /* * This routine returns the disk from which the requested read should * be done. There is a per-array 'next expected sequential IO' sector @@ -821,12 +734,10 @@ retry: disk = r10_bio->devs[slot].devnum; rdev = rcu_dereference(conf->mirrors[disk].replacement); if (rdev == NULL || test_bit(Faulty, &rdev->flags) || - test_bit(Unmerged, &rdev->flags) || r10_bio->devs[slot].addr + sectors > rdev->recovery_offset) rdev = rcu_dereference(conf->mirrors[disk].rdev); if (rdev == NULL || - test_bit(Faulty, &rdev->flags) || - test_bit(Unmerged, &rdev->flags)) + test_bit(Faulty, &rdev->flags)) continue; if (!test_bit(In_sync, &rdev->flags) && r10_bio->devs[slot].addr + sectors > rdev->recovery_offset) @@ -914,7 +825,7 @@ static int raid10_congested(struct mddev *mddev, int bits) struct r10conf *conf = mddev->private; int i, ret = 0; - if ((bits & (1 << BDI_async_congested)) && + if ((bits & (1 << WB_async_congested)) && conf->pending_count >= max_queued_requests) return 1; @@ -957,7 +868,7 @@ static void flush_pending_writes(struct r10conf *conf) if (unlikely((bio->bi_rw & REQ_DISCARD) && !blk_queue_discard(bdev_get_queue(bio->bi_bdev)))) /* Just ignore it */ - bio_endio(bio, 0); + bio_endio(bio); else generic_make_request(bio); bio = next; @@ -1133,7 +1044,7 @@ static void raid10_unplug(struct blk_plug_cb *cb, bool from_schedule) if (unlikely((bio->bi_rw & REQ_DISCARD) && !blk_queue_discard(bdev_get_queue(bio->bi_bdev)))) /* Just ignore it */ - bio_endio(bio, 0); + bio_endio(bio); else generic_make_request(bio); bio = next; @@ -1217,7 +1128,7 @@ static void __make_request(struct mddev *mddev, struct bio *bio) * non-zero, then it is the number of not-completed requests. */ bio->bi_phys_segments = 0; - clear_bit(BIO_SEG_VALID, &bio->bi_flags); + bio_clear_flag(bio, BIO_SEG_VALID); if (rw == READ) { /* @@ -1326,11 +1237,9 @@ retry_write: blocked_rdev = rrdev; break; } - if (rdev && (test_bit(Faulty, &rdev->flags) - || test_bit(Unmerged, &rdev->flags))) + if (rdev && (test_bit(Faulty, &rdev->flags))) rdev = NULL; - if (rrdev && (test_bit(Faulty, &rrdev->flags) - || test_bit(Unmerged, &rrdev->flags))) + if (rrdev && (test_bit(Faulty, &rrdev->flags))) rrdev = NULL; r10_bio->devs[i].bio = NULL; @@ -1589,6 +1498,8 @@ static void status(struct seq_file *seq, struct mddev *mddev) seq_printf(seq, " %d offset-copies", conf->geo.far_copies); else seq_printf(seq, " %d far-copies", conf->geo.far_copies); + if (conf->geo.far_set_size != conf->geo.raid_disks) + seq_printf(seq, " %d devices per set", conf->geo.far_set_size); } seq_printf(seq, " [%d/%d] [", conf->geo.raid_disks, conf->geo.raid_disks - mddev->degraded); @@ -1681,6 +1592,7 @@ static void error(struct mddev *mddev, struct md_rdev *rdev) set_bit(Blocked, &rdev->flags); set_bit(Faulty, &rdev->flags); set_bit(MD_CHANGE_DEVS, &mddev->flags); + set_bit(MD_CHANGE_PENDING, &mddev->flags); spin_unlock_irqrestore(&conf->device_lock, flags); printk(KERN_ALERT "md/raid10:%s: Disk failure on %s, disabling device.\n" @@ -1777,7 +1689,6 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev) int mirror; int first = 0; int last = conf->geo.raid_disks - 1; - struct request_queue *q = bdev_get_queue(rdev->bdev); if (mddev->recovery_cp < MaxSector) /* only hot-add to in-sync arrays, as recovery is @@ -1787,14 +1698,12 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev) if (rdev->saved_raid_disk < 0 && !_enough(conf, 1, -1)) return -EINVAL; + if (md_integrity_add_rdev(rdev, mddev)) + return -ENXIO; + if (rdev->raid_disk >= 0) first = last = rdev->raid_disk; - if (q->merge_bvec_fn) { - set_bit(Unmerged, &rdev->flags); - mddev->merge_check_needed = 1; - } - if (rdev->saved_raid_disk >= first && conf->mirrors[rdev->saved_raid_disk].rdev == NULL) mirror = rdev->saved_raid_disk; @@ -1833,20 +1742,6 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev) rcu_assign_pointer(p->rdev, rdev); break; } - if (err == 0 && test_bit(Unmerged, &rdev->flags)) { - /* Some requests might not have seen this new - * merge_bvec_fn. We must wait for them to complete - * before merging the device fully. - * First we make sure any code which has tested - * our function has submitted the request, then - * we wait for all outstanding requests to complete. - */ - synchronize_sched(); - freeze_array(conf, 0); - unfreeze_array(conf); - clear_bit(Unmerged, &rdev->flags); - } - md_integrity_add_rdev(rdev, mddev); if (mddev->queue && blk_queue_discard(bdev_get_queue(rdev->bdev))) queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, mddev->queue); @@ -1916,7 +1811,7 @@ abort: return err; } -static void end_sync_read(struct bio *bio, int error) +static void end_sync_read(struct bio *bio) { struct r10bio *r10_bio = bio->bi_private; struct r10conf *conf = r10_bio->mddev->private; @@ -1928,7 +1823,7 @@ static void end_sync_read(struct bio *bio, int error) } else d = find_bio_disk(conf, r10_bio, bio, NULL, NULL); - if (test_bit(BIO_UPTODATE, &bio->bi_flags)) + if (!bio->bi_error) set_bit(R10BIO_Uptodate, &r10_bio->state); else /* The write handler will notice the lack of @@ -1977,9 +1872,8 @@ static void end_sync_request(struct r10bio *r10_bio) } } -static void end_sync_write(struct bio *bio, int error) +static void end_sync_write(struct bio *bio) { - int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); struct r10bio *r10_bio = bio->bi_private; struct mddev *mddev = r10_bio->mddev; struct r10conf *conf = mddev->private; @@ -1996,7 +1890,7 @@ static void end_sync_write(struct bio *bio, int error) else rdev = conf->mirrors[d].rdev; - if (!uptodate) { + if (bio->bi_error) { if (repl) md_error(mddev, rdev); else { @@ -2044,7 +1938,7 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio) /* find the first device with a block */ for (i=0; i<conf->copies; i++) - if (test_bit(BIO_UPTODATE, &r10_bio->devs[i].bio->bi_flags)) + if (!r10_bio->devs[i].bio->bi_error) break; if (i == conf->copies) @@ -2052,6 +1946,8 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio) first = i; fbio = r10_bio->devs[i].bio; + fbio->bi_iter.bi_size = r10_bio->sectors << 9; + fbio->bi_iter.bi_idx = 0; vcnt = (r10_bio->sectors + (PAGE_SIZE >> 9) - 1) >> (PAGE_SHIFT - 9); /* now find blocks with errors */ @@ -2064,7 +1960,7 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio) continue; if (i == first) continue; - if (test_bit(BIO_UPTODATE, &r10_bio->devs[i].bio->bi_flags)) { + if (!r10_bio->devs[i].bio->bi_error) { /* We know that the bi_io_vec layout is the same for * both 'first' and 'i', so we just compare them. * All vec entries are PAGE_SIZE; @@ -2095,21 +1991,14 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio) bio_reset(tbio); tbio->bi_vcnt = vcnt; - tbio->bi_iter.bi_size = r10_bio->sectors << 9; + tbio->bi_iter.bi_size = fbio->bi_iter.bi_size; tbio->bi_rw = WRITE; tbio->bi_private = r10_bio; tbio->bi_iter.bi_sector = r10_bio->devs[i].addr; - - for (j=0; j < vcnt ; j++) { - tbio->bi_io_vec[j].bv_offset = 0; - tbio->bi_io_vec[j].bv_len = PAGE_SIZE; - - memcpy(page_address(tbio->bi_io_vec[j].bv_page), - page_address(fbio->bi_io_vec[j].bv_page), - PAGE_SIZE); - } tbio->bi_end_io = end_sync_write; + bio_copy_data(tbio, fbio); + d = r10_bio->devs[i].devnum; atomic_inc(&conf->mirrors[d].rdev->nr_pending); atomic_inc(&r10_bio->remaining); @@ -2124,17 +2013,14 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio) * that are active */ for (i = 0; i < conf->copies; i++) { - int j, d; + int d; tbio = r10_bio->devs[i].repl_bio; if (!tbio || !tbio->bi_end_io) continue; if (r10_bio->devs[i].bio->bi_end_io != end_sync_write && r10_bio->devs[i].bio != fbio) - for (j = 0; j < vcnt; j++) - memcpy(page_address(tbio->bi_io_vec[j].bv_page), - page_address(fbio->bi_io_vec[j].bv_page), - PAGE_SIZE); + bio_copy_data(tbio, fbio); d = r10_bio->devs[i].devnum; atomic_inc(&r10_bio->remaining); md_sync_acct(conf->mirrors[d].replacement->bdev, @@ -2404,7 +2290,6 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10 d = r10_bio->devs[sl].devnum; rdev = rcu_dereference(conf->mirrors[d].rdev); if (rdev && - !test_bit(Unmerged, &rdev->flags) && test_bit(In_sync, &rdev->flags) && is_badblock(rdev, r10_bio->devs[sl].addr + sect, s, &first_bad, &bad_sectors) == 0) { @@ -2458,7 +2343,6 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10 d = r10_bio->devs[sl].devnum; rdev = rcu_dereference(conf->mirrors[d].rdev); if (!rdev || - test_bit(Unmerged, &rdev->flags) || !test_bit(In_sync, &rdev->flags)) continue; @@ -2590,7 +2474,7 @@ static int narrow_write_error(struct r10bio *r10_bio, int i) choose_data_offset(r10_bio, rdev) + (sector - r10_bio->sector)); wbio->bi_bdev = rdev->bdev; - if (submit_bio_wait(WRITE, wbio) == 0) + if (submit_bio_wait(WRITE, wbio) < 0) /* Failure! */ ok = rdev_set_badblocks(rdev, sector, sectors, 0) @@ -2716,8 +2600,7 @@ static void handle_write_completed(struct r10conf *conf, struct r10bio *r10_bio) rdev = conf->mirrors[dev].rdev; if (r10_bio->devs[m].bio == NULL) continue; - if (test_bit(BIO_UPTODATE, - &r10_bio->devs[m].bio->bi_flags)) { + if (!r10_bio->devs[m].bio->bi_error) { rdev_clear_badblocks( rdev, r10_bio->devs[m].addr, @@ -2732,8 +2615,8 @@ static void handle_write_completed(struct r10conf *conf, struct r10bio *r10_bio) rdev = conf->mirrors[dev].replacement; if (r10_bio->devs[m].repl_bio == NULL) continue; - if (test_bit(BIO_UPTODATE, - &r10_bio->devs[m].repl_bio->bi_flags)) { + + if (!r10_bio->devs[m].repl_bio->bi_error) { rdev_clear_badblocks( rdev, r10_bio->devs[m].addr, @@ -2748,6 +2631,7 @@ static void handle_write_completed(struct r10conf *conf, struct r10bio *r10_bio) } put_buf(r10_bio); } else { + bool fail = false; for (m = 0; m < conf->copies; m++) { int dev = r10_bio->devs[m].devnum; struct bio *bio = r10_bio->devs[m].bio; @@ -2758,8 +2642,8 @@ static void handle_write_completed(struct r10conf *conf, struct r10bio *r10_bio) r10_bio->devs[m].addr, r10_bio->sectors, 0); rdev_dec_pending(rdev, conf->mddev); - } else if (bio != NULL && - !test_bit(BIO_UPTODATE, &bio->bi_flags)) { + } else if (bio != NULL && bio->bi_error) { + fail = true; if (!narrow_write_error(r10_bio, m)) { md_error(conf->mddev, rdev); set_bit(R10BIO_Degraded, @@ -2777,10 +2661,17 @@ static void handle_write_completed(struct r10conf *conf, struct r10bio *r10_bio) rdev_dec_pending(rdev, conf->mddev); } } - if (test_bit(R10BIO_WriteError, - &r10_bio->state)) - close_write(r10_bio); - raid_end_bio_io(r10_bio); + if (fail) { + spin_lock_irq(&conf->device_lock); + list_add(&r10_bio->retry_list, &conf->bio_end_io_list); + spin_unlock_irq(&conf->device_lock); + md_wakeup_thread(conf->mddev->thread); + } else { + if (test_bit(R10BIO_WriteError, + &r10_bio->state)) + close_write(r10_bio); + raid_end_bio_io(r10_bio); + } } } @@ -2795,6 +2686,29 @@ static void raid10d(struct md_thread *thread) md_check_recovery(mddev); + if (!list_empty_careful(&conf->bio_end_io_list) && + !test_bit(MD_CHANGE_PENDING, &mddev->flags)) { + LIST_HEAD(tmp); + spin_lock_irqsave(&conf->device_lock, flags); + if (!test_bit(MD_CHANGE_PENDING, &mddev->flags)) { + list_add(&tmp, &conf->bio_end_io_list); + list_del_init(&conf->bio_end_io_list); + } + spin_unlock_irqrestore(&conf->device_lock, flags); + while (!list_empty(&tmp)) { + r10_bio = list_first_entry(&tmp, struct r10bio, + retry_list); + list_del(&r10_bio->retry_list); + if (mddev->degraded) + set_bit(R10BIO_Degraded, &r10_bio->state); + + if (test_bit(R10BIO_WriteError, + &r10_bio->state)) + close_write(r10_bio); + raid_end_bio_io(r10_bio); + } + } + blk_start_plug(&plug); for (;;) { @@ -3237,7 +3151,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, /* resync. Schedule a read for every block at this virt offset */ int count = 0; - bitmap_cond_end_sync(mddev->bitmap, sector_nr); + bitmap_cond_end_sync(mddev->bitmap, sector_nr, 0); if (!bitmap_start_sync(mddev->bitmap, sector_nr, &sync_blocks, mddev->degraded) && @@ -3273,7 +3187,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, bio = r10_bio->devs[i].bio; bio_reset(bio); - clear_bit(BIO_UPTODATE, &bio->bi_flags); + bio->bi_error = -EIO; if (conf->mirrors[d].rdev == NULL || test_bit(Faulty, &conf->mirrors[d].rdev->flags)) continue; @@ -3310,7 +3224,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, /* Need to set up for writing to the replacement */ bio = r10_bio->devs[i].repl_bio; bio_reset(bio); - clear_bit(BIO_UPTODATE, &bio->bi_flags); + bio->bi_error = -EIO; sector = r10_bio->devs[i].addr; atomic_inc(&conf->mirrors[d].rdev->nr_pending); @@ -3367,7 +3281,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, /* remove last page from this bio */ bio2->bi_vcnt--; bio2->bi_iter.bi_size -= len; - __clear_bit(BIO_SEG_VALID, &bio2->bi_flags); + bio_clear_flag(bio2, BIO_SEG_VALID); } goto bio_full; } @@ -3387,7 +3301,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, if (bio->bi_end_io == end_sync_read) { md_sync_acct(bio->bi_bdev, nr_sectors); - set_bit(BIO_UPTODATE, &bio->bi_flags); + bio->bi_error = 0; generic_make_request(bio); } } @@ -3487,7 +3401,7 @@ static int setup_geo(struct geom *geo, struct mddev *mddev, enum geo_type new) disks = mddev->raid_disks + mddev->delta_disks; break; } - if (layout >> 18) + if (layout >> 19) return -1; if (chunk < (PAGE_SIZE >> 9) || !is_power_of_2(chunk)) @@ -3499,7 +3413,22 @@ static int setup_geo(struct geom *geo, struct mddev *mddev, enum geo_type new) geo->near_copies = nc; geo->far_copies = fc; geo->far_offset = fo; - geo->far_set_size = (layout & (1<<17)) ? disks / fc : disks; + switch (layout >> 17) { + case 0: /* original layout. simple but not always optimal */ + geo->far_set_size = disks; + break; + case 1: /* "improved" layout which was buggy. Hopefully no-one is + * actually using this, but leave code here just in case.*/ + geo->far_set_size = disks/fc; + WARN(geo->far_set_size < fc, + "This RAID10 layout does not provide data safety - please backup and create new array\n"); + break; + case 2: /* "improved" layout fixed to match documentation */ + geo->far_set_size = fc * nc; + break; + default: /* Not a valid layout */ + return -1; + } geo->chunk_mask = chunk - 1; geo->chunk_shift = ffz(~chunk); return nc*fc; @@ -3569,6 +3498,7 @@ static struct r10conf *setup_conf(struct mddev *mddev) conf->reshape_safe = conf->reshape_progress; spin_lock_init(&conf->device_lock); INIT_LIST_HEAD(&conf->retry_list); + INIT_LIST_HEAD(&conf->bio_end_io_list); spin_lock_init(&conf->resync_lock); init_waitqueue_head(&conf->wait_barrier); @@ -3585,8 +3515,7 @@ static struct r10conf *setup_conf(struct mddev *mddev) printk(KERN_ERR "md/raid10:%s: couldn't allocate memory.\n", mdname(mddev)); if (conf) { - if (conf->r10bio_pool) - mempool_destroy(conf->r10bio_pool); + mempool_destroy(conf->r10bio_pool); kfree(conf->mirrors); safe_put_page(conf->tmppage); kfree(conf); @@ -3653,8 +3582,6 @@ static int run(struct mddev *mddev) disk->rdev = rdev; } q = bdev_get_queue(rdev->bdev); - if (q->merge_bvec_fn) - mddev->merge_check_needed = 1; diff = (rdev->new_data_offset - rdev->data_offset); if (!mddev->reshape_backwards) diff = -diff; @@ -3783,8 +3710,7 @@ static int run(struct mddev *mddev) out_free_conf: md_unregister_thread(&mddev->thread); - if (conf->r10bio_pool) - mempool_destroy(conf->r10bio_pool); + mempool_destroy(conf->r10bio_pool); safe_put_page(conf->tmppage); kfree(conf->mirrors); kfree(conf); @@ -3797,8 +3723,7 @@ static void raid10_free(struct mddev *mddev, void *priv) { struct r10conf *conf = priv; - if (conf->r10bio_pool) - mempool_destroy(conf->r10bio_pool); + mempool_destroy(conf->r10bio_pool); safe_put_page(conf->tmppage); kfree(conf->mirrors); kfree(conf->mirrors_old); @@ -4225,7 +4150,7 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr, * at a time, possibly less if that exceeds RESYNC_PAGES, * or we hit a bad block or something. * This might mean we pause for normal IO in the middle of - * a chunk, but that is not a problem was mddev->reshape_position + * a chunk, but that is not a problem as mddev->reshape_position * can record any location. * * If we will want to write to a location that isn't @@ -4249,7 +4174,7 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr, * * In all this the minimum difference in data offsets * (conf->offset_diff - always positive) allows a bit of slack, - * so next can be after 'safe', but not by more than offset_disk + * so next can be after 'safe', but not by more than offset_diff * * We need to prepare all the bios here before we start any IO * to ensure the size we choose is acceptable to all devices. @@ -4392,7 +4317,7 @@ read_more: read_bio->bi_end_io = end_sync_read; read_bio->bi_rw = READ; read_bio->bi_flags &= (~0UL << BIO_RESET_BITS); - __set_bit(BIO_UPTODATE, &read_bio->bi_flags); + read_bio->bi_error = 0; read_bio->bi_vcnt = 0; read_bio->bi_iter.bi_size = 0; r10_bio->master_bio = read_bio; @@ -4449,7 +4374,7 @@ read_more: /* Remove last page from this bio */ bio2->bi_vcnt--; bio2->bi_iter.bi_size -= len; - __clear_bit(BIO_SEG_VALID, &bio2->bi_flags); + bio_clear_flag(bio2, BIO_SEG_VALID); } goto bio_full; } @@ -4614,9 +4539,8 @@ static int handle_reshape_read_error(struct mddev *mddev, return 0; } -static void end_reshape_write(struct bio *bio, int error) +static void end_reshape_write(struct bio *bio) { - int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); struct r10bio *r10_bio = bio->bi_private; struct mddev *mddev = r10_bio->mddev; struct r10conf *conf = mddev->private; @@ -4633,7 +4557,7 @@ static void end_reshape_write(struct bio *bio, int error) rdev = conf->mirrors[d].rdev; } - if (!uptodate) { + if (bio->bi_error) { /* FIXME should record badblock */ md_error(mddev, rdev); } @@ -4710,7 +4634,6 @@ static struct md_personality raid10_personality = .start_reshape = raid10_start_reshape, .finish_reshape = raid10_finish_reshape, .congested = raid10_congested, - .mergeable_bvec = raid10_mergeable_bvec, }; static int __init raid_init(void) |