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Merge branch 'md-next' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md into for-5.9/drivers

Browse Source 
Pull MD for 5.9 from Song.

* 'md-next' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md:
  md/raid10: avoid deadlock on recovery.
  raid: md_p.h: drop duplicated word in a comment
  md-cluster: fix rmmod issue when md_cluster convert bitmap to none
  md-cluster: fix safemode_delay value when converting to clustered bitmap
  md/raid5: support config stripe_size by sysfs entry
  md/raid5: set default stripe_size as 4096
  md/raid456: convert macro STRIPE_* to RAID5_STRIPE_*
  raid5: remove the meaningless check in raid5_make_request
  raid5: put the comment of clear_batch_ready to the right place
  raid5: call clear_batch_ready before set STRIPE_ACTIVE
  md: raid10: Fix compilation warning
  md: raid5: Fix compilation warning
  md: raid5-cache: Remove set but unused variable
  md: Fix compilation warning
This commit is contained in:
Jens Axboe 2020-07-22 14:11:38 -06:00
commit ef67744e7a
7 changed files with 298 additions and 162 deletions
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24
drivers/md/md.c
View File

@ -101,6 +101,8 @@ static void mddev_detach(struct mddev *mddev);
* count by 2 for every hour elapsed between read errors.
*/
#define MD_DEFAULT_MAX_CORRECTED_READ_ERRORS 20
/* Default safemode delay: 200 msec */
#define DEFAULT_SAFEMODE_DELAY ((200 * HZ)/1000 +1)
/*
* Current RAID-1,4,5 parallel reconstruction 'guaranteed speed limit'
* is 1000 KB/sec, so the extra system load does not show up that much.
@ -2469,8 +2471,8 @@ static int bind_rdev_to_array(struct md_rdev *rdev, struct mddev *mddev)
goto fail;
ko = &part_to_dev(rdev->bdev->bd_part)->kobj;
if (sysfs_create_link(&rdev->kobj, ko, "block"))
/* failure here is OK */;
/* failure here is OK */
err = sysfs_create_link(&rdev->kobj, ko, "block");
rdev->sysfs_state = sysfs_get_dirent_safe(rdev->kobj.sd, "state");
rdev->sysfs_unack_badblocks =
sysfs_get_dirent_safe(rdev->kobj.sd, "unacknowledged_bad_blocks");
@ -3238,8 +3240,8 @@ slot_store(struct md_rdev *rdev, const char *buf, size_t len)
return err;
} else
sysfs_notify_dirent_safe(rdev->sysfs_state);
if (sysfs_link_rdev(rdev->mddev, rdev))
/* failure here is OK */;
/* failure here is OK */;
sysfs_link_rdev(rdev->mddev, rdev);
/* don't wakeup anyone, leave that to userspace. */
} else {
if (slot >= rdev->mddev->raid_disks &&
@ -6034,7 +6036,7 @@ int md_run(struct mddev *mddev)
if (mddev_is_clustered(mddev))
mddev->safemode_delay = 0;
else
mddev->safemode_delay = (200 * HZ)/1000 +1; /* 200 msec delay */
mddev->safemode_delay = DEFAULT_SAFEMODE_DELAY;
mddev->in_sync = 1;
smp_wmb();
spin_lock(&mddev->lock);
@ -7413,6 +7415,8 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info)
mddev->bitmap_info.nodes = 0;
md_cluster_ops->leave(mddev);
module_put(md_cluster_mod);
mddev->safemode_delay = DEFAULT_SAFEMODE_DELAY;
}
mddev_suspend(mddev);
md_bitmap_destroy(mddev);
@ -8408,6 +8412,7 @@ EXPORT_SYMBOL(unregister_md_cluster_operations);
int md_setup_cluster(struct mddev *mddev, int nodes)
{
int ret;
if (!md_cluster_ops)
request_module("md-cluster");
spin_lock(&pers_lock);
@ -8419,7 +8424,10 @@ int md_setup_cluster(struct mddev *mddev, int nodes)
}
spin_unlock(&pers_lock);
return md_cluster_ops->join(mddev, nodes);
ret = md_cluster_ops->join(mddev, nodes);
if (!ret)
mddev->safemode_delay = 0;
return ret;
}
void md_cluster_stop(struct mddev *mddev)
@ -9113,8 +9121,8 @@ static int remove_and_add_spares(struct mddev *mddev,
rdev->recovery_offset = 0;
}
if (mddev->pers->hot_add_disk(mddev, rdev) == 0) {
if (sysfs_link_rdev(mddev, rdev))
/* failure here is OK */;
/* failure here is OK */
sysfs_link_rdev(mddev, rdev);
if (!test_bit(Journal, &rdev->flags))
spares++;
md_new_event(mddev);

18
drivers/md/raid10.c
View File

@ -980,6 +980,7 @@ static void wait_barrier(struct r10conf *conf)
{
spin_lock_irq(&conf->resync_lock);
if (conf->barrier) {
struct bio_list *bio_list = current->bio_list;
conf->nr_waiting++;
/* Wait for the barrier to drop.
* However if there are already pending
@ -994,9 +995,16 @@ static void wait_barrier(struct r10conf *conf)
wait_event_lock_irq(conf->wait_barrier,
!conf->barrier ||
(atomic_read(&conf->nr_pending) &&
current->bio_list &&
(!bio_list_empty(&current->bio_list[0]) ||
!bio_list_empty(&current->bio_list[1]))),
bio_list &&
(!bio_list_empty(&bio_list[0]) ||
!bio_list_empty(&bio_list[1]))) ||
/* move on if recovery thread is
* blocked by us
*/
(conf->mddev->thread->tsk == current &&
test_bit(MD_RECOVERY_RUNNING,
&conf->mddev->recovery) &&
conf->nr_queued > 0),
conf->resync_lock);
conf->nr_waiting--;
if (!conf->nr_waiting)
@ -4307,8 +4315,8 @@ out:
else
rdev->recovery_offset = 0;
if (sysfs_link_rdev(mddev, rdev))
/* Failure here is OK */;
/* Failure here is OK */
sysfs_link_rdev(mddev, rdev);
}
} else if (rdev->raid_disk >= conf->prev.raid_disks
&& !test_bit(Faulty, &rdev->flags)) {

12
drivers/md/raid5-cache.c
View File

@ -195,9 +195,7 @@ struct r5l_log {
static inline sector_t r5c_tree_index(struct r5conf *conf,
sector_t sect)
{
sector_t offset;
offset = sector_div(sect, conf->chunk_sectors);
sector_div(sect, conf->chunk_sectors);
return sect;
}
@ -298,8 +296,8 @@ r5c_return_dev_pending_writes(struct r5conf *conf, struct r5dev *dev)
wbi = dev->written;
dev->written = NULL;
while (wbi && wbi->bi_iter.bi_sector <
dev->sector + STRIPE_SECTORS) {
wbi2 = r5_next_bio(wbi, dev->sector);
dev->sector + RAID5_STRIPE_SECTORS(conf)) {
wbi2 = r5_next_bio(conf, wbi, dev->sector);
md_write_end(conf->mddev);
bio_endio(wbi);
wbi = wbi2;
@ -316,7 +314,7 @@ void r5c_handle_cached_data_endio(struct r5conf *conf,
set_bit(R5_UPTODATE, &sh->dev[i].flags);
r5c_return_dev_pending_writes(conf, &sh->dev[i]);
md_bitmap_endwrite(conf->mddev->bitmap, sh->sector,
STRIPE_SECTORS,
RAID5_STRIPE_SECTORS(conf),
!test_bit(STRIPE_DEGRADED, &sh->state),
0);
}
@ -364,7 +362,7 @@ void r5c_check_cached_full_stripe(struct r5conf *conf)
*/
if (atomic_read(&conf->r5c_cached_full_stripes) >=
min(R5C_FULL_STRIPE_FLUSH_BATCH(conf),
conf->chunk_sectors >> STRIPE_SHIFT))
conf->chunk_sectors >> RAID5_STRIPE_SHIFT(conf)))
r5l_wake_reclaim(conf->log, 0);
}

11
drivers/md/raid5-ppl.c
View File

@ -324,7 +324,7 @@ static int ppl_log_stripe(struct ppl_log *log, struct stripe_head *sh)
* be just after the last logged stripe and write to the same
* disks. Use bit shift and logarithm to avoid 64-bit division.
*/
if ((sh->sector == sh_last->sector + STRIPE_SECTORS) &&
if ((sh->sector == sh_last->sector + RAID5_STRIPE_SECTORS(conf)) &&
(data_sector >> ilog2(conf->chunk_sectors) ==
data_sector_last >> ilog2(conf->chunk_sectors)) &&
((data_sector - data_sector_last) * data_disks ==
@ -844,9 +844,9 @@ static int ppl_recover_entry(struct ppl_log *log, struct ppl_header_entry *e,
/* if start and end is 4k aligned, use a 4k block */
if (block_size == 512 &&
(r_sector_first & (STRIPE_SECTORS - 1)) == 0 &&
(r_sector_last & (STRIPE_SECTORS - 1)) == 0)
block_size = STRIPE_SIZE;
(r_sector_first & (RAID5_STRIPE_SECTORS(conf) - 1)) == 0 &&
(r_sector_last & (RAID5_STRIPE_SECTORS(conf) - 1)) == 0)
block_size = RAID5_STRIPE_SIZE(conf);
/* iterate through blocks in strip */
for (i = 0; i < strip_sectors; i += (block_size >> 9)) {
@ -1274,7 +1274,8 @@ static int ppl_validate_rdev(struct md_rdev *rdev)
ppl_data_sectors = rdev->ppl.size - (PPL_HEADER_SIZE >> 9);
if (ppl_data_sectors > 0)
ppl_data_sectors = rounddown(ppl_data_sectors, STRIPE_SECTORS);
ppl_data_sectors = rounddown(ppl_data_sectors,
RAID5_STRIPE_SECTORS((struct r5conf *)rdev->mddev->private));
if (ppl_data_sectors <= 0) {
pr_warn("md/raid:%s: PPL space too small on %s\n",

340
drivers/md/raid5.c
View File

@ -69,13 +69,13 @@ static struct workqueue_struct *raid5_wq;
static inline struct hlist_head *stripe_hash(struct r5conf *conf, sector_t sect)
{
int hash = (sect >> STRIPE_SHIFT) & HASH_MASK;
int hash = (sect >> RAID5_STRIPE_SHIFT(conf)) & HASH_MASK;
return &conf->stripe_hashtbl[hash];
}
static inline int stripe_hash_locks_hash(sector_t sect)
static inline int stripe_hash_locks_hash(struct r5conf *conf, sector_t sect)
{
return (sect >> STRIPE_SHIFT) & STRIPE_HASH_LOCKS_MASK;
return (sect >> RAID5_STRIPE_SHIFT(conf)) & STRIPE_HASH_LOCKS_MASK;
}
static inline void lock_device_hash_lock(struct r5conf *conf, int hash)
@ -627,7 +627,7 @@ raid5_get_active_stripe(struct r5conf *conf, sector_t sector,
int previous, int noblock, int noquiesce)
{
struct stripe_head *sh;
int hash = stripe_hash_locks_hash(sector);
int hash = stripe_hash_locks_hash(conf, sector);
int inc_empty_inactive_list_flag;
pr_debug("get_stripe, sector %llu\n", (unsigned long long)sector);
@ -748,9 +748,9 @@ static void stripe_add_to_batch_list(struct r5conf *conf, struct stripe_head *sh
tmp_sec = sh->sector;
if (!sector_div(tmp_sec, conf->chunk_sectors))
return;
head_sector = sh->sector - STRIPE_SECTORS;
head_sector = sh->sector - RAID5_STRIPE_SECTORS(conf);
hash = stripe_hash_locks_hash(head_sector);
hash = stripe_hash_locks_hash(conf, head_sector);
spin_lock_irq(conf->hash_locks + hash);
head = __find_stripe(conf, head_sector, conf->generation);
if (head && !atomic_inc_not_zero(&head->count)) {
@ -1057,7 +1057,7 @@ again:
test_bit(WriteErrorSeen, &rdev->flags)) {
sector_t first_bad;
int bad_sectors;
int bad = is_badblock(rdev, sh->sector, STRIPE_SECTORS,
int bad = is_badblock(rdev, sh->sector, RAID5_STRIPE_SECTORS(conf),
&first_bad, &bad_sectors);
if (!bad)
break;
@ -1089,7 +1089,7 @@ again:
if (rdev) {
if (s->syncing || s->expanding || s->expanded
|| s->replacing)
md_sync_acct(rdev->bdev, STRIPE_SECTORS);
md_sync_acct(rdev->bdev, RAID5_STRIPE_SECTORS(conf));
set_bit(STRIPE_IO_STARTED, &sh->state);
@ -1129,9 +1129,9 @@ again:
else
sh->dev[i].vec.bv_page = sh->dev[i].page;
bi->bi_vcnt = 1;
bi->bi_io_vec[0].bv_len = STRIPE_SIZE;
bi->bi_io_vec[0].bv_len = RAID5_STRIPE_SIZE(conf);
bi->bi_io_vec[0].bv_offset = 0;
bi->bi_iter.bi_size = STRIPE_SIZE;
bi->bi_iter.bi_size = RAID5_STRIPE_SIZE(conf);
bi->bi_write_hint = sh->dev[i].write_hint;
if (!rrdev)
sh->dev[i].write_hint = RWH_WRITE_LIFE_NOT_SET;
@ -1156,7 +1156,7 @@ again:
if (rrdev) {
if (s->syncing || s->expanding || s->expanded
|| s->replacing)
md_sync_acct(rrdev->bdev, STRIPE_SECTORS);
md_sync_acct(rrdev->bdev, RAID5_STRIPE_SECTORS(conf));
set_bit(STRIPE_IO_STARTED, &sh->state);
@ -1183,9 +1183,9 @@ again:
WARN_ON(test_bit(R5_UPTODATE, &sh->dev[i].flags));
sh->dev[i].rvec.bv_page = sh->dev[i].page;
rbi->bi_vcnt = 1;
rbi->bi_io_vec[0].bv_len = STRIPE_SIZE;
rbi->bi_io_vec[0].bv_len = RAID5_STRIPE_SIZE(conf);
rbi->bi_io_vec[0].bv_offset = 0;
rbi->bi_iter.bi_size = STRIPE_SIZE;
rbi->bi_iter.bi_size = RAID5_STRIPE_SIZE(conf);
rbi->bi_write_hint = sh->dev[i].write_hint;
sh->dev[i].write_hint = RWH_WRITE_LIFE_NOT_SET;
/*
@ -1235,6 +1235,7 @@ async_copy_data(int frombio, struct bio *bio, struct page **page,
int page_offset;
struct async_submit_ctl submit;
enum async_tx_flags flags = 0;
struct r5conf *conf = sh->raid_conf;
if (bio->bi_iter.bi_sector >= sector)
page_offset = (signed)(bio->bi_iter.bi_sector - sector) * 512;
@ -1256,8 +1257,8 @@ async_copy_data(int frombio, struct bio *bio, struct page **page,
len -= b_offset;
}
if (len > 0 && page_offset + len > STRIPE_SIZE)
clen = STRIPE_SIZE - page_offset;
if (len > 0 && page_offset + len > RAID5_STRIPE_SIZE(conf))
clen = RAID5_STRIPE_SIZE(conf) - page_offset;
else
clen = len;
@ -1265,9 +1266,9 @@ async_copy_data(int frombio, struct bio *bio, struct page **page,
b_offset += bvl.bv_offset;
bio_page = bvl.bv_page;
if (frombio) {
if (sh->raid_conf->skip_copy &&
if (conf->skip_copy &&
b_offset == 0 && page_offset == 0 &&
clen == STRIPE_SIZE &&
clen == RAID5_STRIPE_SIZE(conf) &&
!no_skipcopy)
*page = bio_page;
else
@ -1292,6 +1293,7 @@ static void ops_complete_biofill(void *stripe_head_ref)
{
struct stripe_head *sh = stripe_head_ref;
int i;
struct r5conf *conf = sh->raid_conf;
pr_debug("%s: stripe %llu\n", __func__,
(unsigned long long)sh->sector);
@ -1312,8 +1314,8 @@ static void ops_complete_biofill(void *stripe_head_ref)
rbi = dev->read;
dev->read = NULL;
while (rbi && rbi->bi_iter.bi_sector <
dev->sector + STRIPE_SECTORS) {
rbi2 = r5_next_bio(rbi, dev->sector);
dev->sector + RAID5_STRIPE_SECTORS(conf)) {
rbi2 = r5_next_bio(conf, rbi, dev->sector);
bio_endio(rbi);
rbi = rbi2;
}
@ -1330,6 +1332,7 @@ static void ops_run_biofill(struct stripe_head *sh)
struct dma_async_tx_descriptor *tx = NULL;
struct async_submit_ctl submit;
int i;
struct r5conf *conf = sh->raid_conf;
BUG_ON(sh->batch_head);
pr_debug("%s: stripe %llu\n", __func__,
@ -1344,10 +1347,10 @@ static void ops_run_biofill(struct stripe_head *sh)
dev->toread = NULL;
spin_unlock_irq(&sh->stripe_lock);
while (rbi && rbi->bi_iter.bi_sector <
dev->sector + STRIPE_SECTORS) {
dev->sector + RAID5_STRIPE_SECTORS(conf)) {
tx = async_copy_data(0, rbi, &dev->page,
dev->sector, tx, sh, 0);
rbi = r5_next_bio(rbi, dev->sector);
rbi = r5_next_bio(conf, rbi, dev->sector);
}
}
}
@ -1429,9 +1432,11 @@ ops_run_compute5(struct stripe_head *sh, struct raid5_percpu *percpu)
init_async_submit(&submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_ZERO_DST, NULL,
ops_complete_compute, sh, to_addr_conv(sh, percpu, 0));
if (unlikely(count == 1))
tx = async_memcpy(xor_dest, xor_srcs[0], 0, 0, STRIPE_SIZE, &submit);
tx = async_memcpy(xor_dest, xor_srcs[0], 0, 0,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
else
tx = async_xor(xor_dest, xor_srcs, 0, count, STRIPE_SIZE, &submit);
tx = async_xor(xor_dest, xor_srcs, 0, count,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
return tx;
}
@ -1522,7 +1527,8 @@ ops_run_compute6_1(struct stripe_head *sh, struct raid5_percpu *percpu)
init_async_submit(&submit, ASYNC_TX_FENCE, NULL,
ops_complete_compute, sh,
to_addr_conv(sh, percpu, 0));
tx = async_gen_syndrome(blocks, 0, count+2, STRIPE_SIZE, &submit);
tx = async_gen_syndrome(blocks, 0, count+2,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
} else {
/* Compute any data- or p-drive using XOR */
count = 0;
@ -1535,7 +1541,8 @@ ops_run_compute6_1(struct stripe_head *sh, struct raid5_percpu *percpu)
init_async_submit(&submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_ZERO_DST,
NULL, ops_complete_compute, sh,
to_addr_conv(sh, percpu, 0));
tx = async_xor(dest, blocks, 0, count, STRIPE_SIZE, &submit);
tx = async_xor(dest, blocks, 0, count,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
}
return tx;
@ -1598,7 +1605,8 @@ ops_run_compute6_2(struct stripe_head *sh, struct raid5_percpu *percpu)
ops_complete_compute, sh,
to_addr_conv(sh, percpu, 0));
return async_gen_syndrome(blocks, 0, syndrome_disks+2,
STRIPE_SIZE, &submit);
RAID5_STRIPE_SIZE(sh->raid_conf),
&submit);
} else {
struct page *dest;
int data_target;
@ -1621,7 +1629,8 @@ ops_run_compute6_2(struct stripe_head *sh, struct raid5_percpu *percpu)
ASYNC_TX_FENCE|ASYNC_TX_XOR_ZERO_DST,
NULL, NULL, NULL,
to_addr_conv(sh, percpu, 0));
tx = async_xor(dest, blocks, 0, count, STRIPE_SIZE,
tx = async_xor(dest, blocks, 0, count,
RAID5_STRIPE_SIZE(sh->raid_conf),
&submit);
count = set_syndrome_sources(blocks, sh, SYNDROME_SRC_ALL);
@ -1629,7 +1638,8 @@ ops_run_compute6_2(struct stripe_head *sh, struct raid5_percpu *percpu)
ops_complete_compute, sh,
to_addr_conv(sh, percpu, 0));
return async_gen_syndrome(blocks, 0, count+2,
STRIPE_SIZE, &submit);
RAID5_STRIPE_SIZE(sh->raid_conf),
&submit);
}
} else {
init_async_submit(&submit, ASYNC_TX_FENCE, NULL,
@ -1638,13 +1648,15 @@ ops_run_compute6_2(struct stripe_head *sh, struct raid5_percpu *percpu)
if (failb == syndrome_disks) {
/* We're missing D+P. */
return async_raid6_datap_recov(syndrome_disks+2,
STRIPE_SIZE, faila,
blocks, &submit);
RAID5_STRIPE_SIZE(sh->raid_conf),
faila,
blocks, &submit);
} else {
/* We're missing D+D. */
return async_raid6_2data_recov(syndrome_disks+2,
STRIPE_SIZE, faila, failb,
blocks, &submit);
RAID5_STRIPE_SIZE(sh->raid_conf),
faila, failb,
blocks, &submit);
}
}
}
@ -1691,7 +1703,8 @@ ops_run_prexor5(struct stripe_head *sh, struct raid5_percpu *percpu,
init_async_submit(&submit, ASYNC_TX_FENCE|ASYNC_TX_XOR_DROP_DST, tx,
ops_complete_prexor, sh, to_addr_conv(sh, percpu, 0));
tx = async_xor(xor_dest, xor_srcs, 0, count, STRIPE_SIZE, &submit);
tx = async_xor(xor_dest, xor_srcs, 0, count,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
return tx;
}
@ -1711,7 +1724,8 @@ ops_run_prexor6(struct stripe_head *sh, struct raid5_percpu *percpu,
init_async_submit(&submit, ASYNC_TX_FENCE|ASYNC_TX_PQ_XOR_DST, tx,
ops_complete_prexor, sh, to_addr_conv(sh, percpu, 0));
tx = async_gen_syndrome(blocks, 0, count+2, STRIPE_SIZE, &submit);
tx = async_gen_syndrome(blocks, 0, count+2,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
return tx;
}
@ -1752,7 +1766,7 @@ again:
WARN_ON(dev->page != dev->orig_page);
while (wbi && wbi->bi_iter.bi_sector <
dev->sector + STRIPE_SECTORS) {
dev->sector + RAID5_STRIPE_SECTORS(conf)) {
if (wbi->bi_opf & REQ_FUA)
set_bit(R5_WantFUA, &dev->flags);
if (wbi->bi_opf & REQ_SYNC)
@ -1770,7 +1784,7 @@ again:
clear_bit(R5_OVERWRITE, &dev->flags);
}
}
wbi = r5_next_bio(wbi, dev->sector);
wbi = r5_next_bio(conf, wbi, dev->sector);
}
if (head_sh->batch_head) {
@ -1910,9 +1924,11 @@ again:
}
if (unlikely(count == 1))
tx = async_memcpy(xor_dest, xor_srcs[0], 0, 0, STRIPE_SIZE, &submit);
tx = async_memcpy(xor_dest, xor_srcs[0], 0, 0,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
else
tx = async_xor(xor_dest, xor_srcs, 0, count, STRIPE_SIZE, &submit);
tx = async_xor(xor_dest, xor_srcs, 0, count,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
if (!last_stripe) {
j++;
sh = list_first_entry(&sh->batch_list, struct stripe_head,
@ -1972,7 +1988,8 @@ again:
} else
init_async_submit(&submit, 0, tx, NULL, NULL,
to_addr_conv(sh, percpu, j));
tx = async_gen_syndrome(blocks, 0, count+2, STRIPE_SIZE, &submit);
tx = async_gen_syndrome(blocks, 0, count+2,
RAID5_STRIPE_SIZE(sh->raid_conf), &submit);
if (!last_stripe) {
j++;
sh = list_first_entry(&sh->batch_list, struct stripe_head,
@ -2020,7 +2037,8 @@ static void ops_run_check_p(struct stripe_head *sh, struct raid5_percpu *percpu)
init_async_submit(&submit, 0, NULL, NULL, NULL,
to_addr_conv(sh, percpu, 0));
tx = async_xor_val(xor_dest, xor_srcs, 0, count, STRIPE_SIZE,
tx = async_xor_val(xor_dest, xor_srcs, 0, count,
RAID5_STRIPE_SIZE(sh->raid_conf),
&sh->ops.zero_sum_result, &submit);
atomic_inc(&sh->count);
@ -2045,7 +2063,8 @@ static void ops_run_check_pq(struct stripe_head *sh, struct raid5_percpu *percpu
atomic_inc(&sh->count);
init_async_submit(&submit, ASYNC_TX_ACK, NULL, ops_complete_check,
sh, to_addr_conv(sh, percpu, 0));
async_syndrome_val(srcs, 0, count+2, STRIPE_SIZE,
async_syndrome_val(srcs, 0, count+2,
RAID5_STRIPE_SIZE(sh->raid_conf),
&sh->ops.zero_sum_result, percpu->spare_page, &submit);
}
@ -2217,9 +2236,9 @@ static int grow_stripes(struct r5conf *conf, int num)
/**
* scribble_alloc - allocate percpu scribble buffer for required size
* of the scribble region
* @percpu - from for_each_present_cpu() of the caller
* @num - total number of disks in the array
* @cnt - scribble objs count for required size of the scribble region
* @percpu: from for_each_present_cpu() of the caller
* @num: total number of disks in the array
* @cnt: scribble objs count for required size of the scribble region
*
* The scribble buffer size must be enough to contain:
* 1/ a struct page pointer for each device in the array +2
@ -2275,7 +2294,7 @@ static int resize_chunks(struct r5conf *conf, int new_disks, int new_sectors)
percpu = per_cpu_ptr(conf->percpu, cpu);
err = scribble_alloc(percpu, new_disks,
new_sectors / STRIPE_SECTORS);
new_sectors / RAID5_STRIPE_SECTORS(conf));
if (err)
break;
}
@ -2509,10 +2528,10 @@ static void raid5_end_read_request(struct bio * bi)
*/
pr_info_ratelimited(
"md/raid:%s: read error corrected (%lu sectors at %llu on %s)\n",
mdname(conf->mddev), STRIPE_SECTORS,
mdname(conf->mddev), RAID5_STRIPE_SECTORS(conf),
(unsigned long long)s,
bdevname(rdev->bdev, b));
atomic_add(STRIPE_SECTORS, &rdev->corrected_errors);
atomic_add(RAID5_STRIPE_SECTORS(conf), &rdev->corrected_errors);
clear_bit(R5_ReadError, &sh->dev[i].flags);
clear_bit(R5_ReWrite, &sh->dev[i].flags);
} else if (test_bit(R5_ReadNoMerge, &sh->dev[i].flags))
@ -2585,7 +2604,7 @@ static void raid5_end_read_request(struct bio * bi)
if (!(set_bad
&& test_bit(In_sync, &rdev->flags)
&& rdev_set_badblocks(
rdev, sh->sector, STRIPE_SECTORS, 0)))
rdev, sh->sector, RAID5_STRIPE_SECTORS(conf), 0)))
md_error(conf->mddev, rdev);
}
}
@ -2637,7 +2656,7 @@ static void raid5_end_write_request(struct bio *bi)
if (bi->bi_status)
md_error(conf->mddev, rdev);
else if (is_badblock(rdev, sh->sector,
STRIPE_SECTORS,
RAID5_STRIPE_SECTORS(conf),
&first_bad, &bad_sectors))
set_bit(R5_MadeGoodRepl, &sh->dev[i].flags);
} else {
@ -2649,7 +2668,7 @@ static void raid5_end_write_request(struct bio *bi)
set_bit(MD_RECOVERY_NEEDED,
&rdev->mddev->recovery);
} else if (is_badblock(rdev, sh->sector,
STRIPE_SECTORS,
RAID5_STRIPE_SECTORS(conf),
&first_bad, &bad_sectors)) {
set_bit(R5_MadeGood, &sh->dev[i].flags);
if (test_bit(R5_ReadError, &sh->dev[i].flags))
@ -3283,13 +3302,13 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx,
/* check if page is covered */
sector_t sector = sh->dev[dd_idx].sector;
for (bi=sh->dev[dd_idx].towrite;
sector < sh->dev[dd_idx].sector + STRIPE_SECTORS &&
sector < sh->dev[dd_idx].sector + RAID5_STRIPE_SECTORS(conf) &&
bi && bi->bi_iter.bi_sector <= sector;
bi = r5_next_bio(bi, sh->dev[dd_idx].sector)) {
bi = r5_next_bio(conf, bi, sh->dev[dd_idx].sector)) {
if (bio_end_sector(bi) >= sector)
sector = bio_end_sector(bi);
}
if (sector >= sh->dev[dd_idx].sector + STRIPE_SECTORS)
if (sector >= sh->dev[dd_idx].sector + RAID5_STRIPE_SECTORS(conf))
if (!test_and_set_bit(R5_OVERWRITE, &sh->dev[dd_idx].flags))
sh->overwrite_disks++;
}
@ -3314,7 +3333,7 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx,
set_bit(STRIPE_BITMAP_PENDING, &sh->state);
spin_unlock_irq(&sh->stripe_lock);
md_bitmap_startwrite(conf->mddev->bitmap, sh->sector,
STRIPE_SECTORS, 0);
RAID5_STRIPE_SECTORS(conf), 0);
spin_lock_irq(&sh->stripe_lock);
clear_bit(STRIPE_BITMAP_PENDING, &sh->state);
if (!sh->batch_head) {
@ -3376,7 +3395,7 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh,
if (!rdev_set_badblocks(
rdev,
sh->sector,
STRIPE_SECTORS, 0))
RAID5_STRIPE_SECTORS(conf), 0))
md_error(conf->mddev, rdev);
rdev_dec_pending(rdev, conf->mddev);
}
@ -3396,8 +3415,8 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh,
wake_up(&conf->wait_for_overlap);
while (bi && bi->bi_iter.bi_sector <
sh->dev[i].sector + STRIPE_SECTORS) {
struct bio *nextbi = r5_next_bio(bi, sh->dev[i].sector);
sh->dev[i].sector + RAID5_STRIPE_SECTORS(conf)) {
struct bio *nextbi = r5_next_bio(conf, bi, sh->dev[i].sector);
md_write_end(conf->mddev);
bio_io_error(bi);
@ -3405,7 +3424,7 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh,
}
if (bitmap_end)
md_bitmap_endwrite(conf->mddev->bitmap, sh->sector,
STRIPE_SECTORS, 0, 0);
RAID5_STRIPE_SECTORS(conf), 0, 0);
bitmap_end = 0;
/* and fail all 'written' */
bi = sh->dev[i].written;
@ -3417,8 +3436,8 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh,
if (bi) bitmap_end = 1;
while (bi && bi->bi_iter.bi_sector <
sh->dev[i].sector + STRIPE_SECTORS) {
struct bio *bi2 = r5_next_bio(bi, sh->dev[i].sector);
sh->dev[i].sector + RAID5_STRIPE_SECTORS(conf)) {
struct bio *bi2 = r5_next_bio(conf, bi, sh->dev[i].sector);
md_write_end(conf->mddev);
bio_io_error(bi);
@ -3441,9 +3460,9 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh,
if (bi)
s->to_read--;
while (bi && bi->bi_iter.bi_sector <
sh->dev[i].sector + STRIPE_SECTORS) {
sh->dev[i].sector + RAID5_STRIPE_SECTORS(conf)) {
struct bio *nextbi =
r5_next_bio(bi, sh->dev[i].sector);
r5_next_bio(conf, bi, sh->dev[i].sector);
bio_io_error(bi);
bi = nextbi;
@ -3451,7 +3470,7 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh,
}
if (bitmap_end)
md_bitmap_endwrite(conf->mddev->bitmap, sh->sector,
STRIPE_SECTORS, 0, 0);
RAID5_STRIPE_SECTORS(conf), 0, 0);
/* If we were in the middle of a write the parity block might
* still be locked - so just clear all R5_LOCKED flags
*/
@ -3496,14 +3515,14 @@ handle_failed_sync(struct r5conf *conf, struct stripe_head *sh,
&& !test_bit(Faulty, &rdev->flags)
&& !test_bit(In_sync, &rdev->flags)
&& !rdev_set_badblocks(rdev, sh->sector,
STRIPE_SECTORS, 0))
RAID5_STRIPE_SECTORS(conf), 0))
abort = 1;
rdev = rcu_dereference(conf->disks[i].replacement);
if (rdev
&& !test_bit(Faulty, &rdev->flags)
&& !test_bit(In_sync, &rdev->flags)
&& !rdev_set_badblocks(rdev, sh->sector,
STRIPE_SECTORS, 0))
RAID5_STRIPE_SECTORS(conf), 0))
abort = 1;
}
rcu_read_unlock();
@ -3511,7 +3530,7 @@ handle_failed_sync(struct r5conf *conf, struct stripe_head *sh,
conf->recovery_disabled =
conf->mddev->recovery_disabled;
}
md_done_sync(conf->mddev, STRIPE_SECTORS, !abort);
md_done_sync(conf->mddev, RAID5_STRIPE_SECTORS(conf), !abort);
}
static int want_replace(struct stripe_head *sh, int disk_idx)
@ -3710,7 +3729,7 @@ static int fetch_block(struct stripe_head *sh, struct stripe_head_state *s,
return 0;
}
/**
/*
* handle_stripe_fill - read or compute data to satisfy pending requests.
*/
static void handle_stripe_fill(struct stripe_head *sh,
@ -3785,14 +3804,14 @@ returnbi:
wbi = dev->written;
dev->written = NULL;
while (wbi && wbi->bi_iter.bi_sector <
dev->sector + STRIPE_SECTORS) {
wbi2 = r5_next_bio(wbi, dev->sector);
dev->sector + RAID5_STRIPE_SECTORS(conf)) {
wbi2 = r5_next_bio(conf, wbi, dev->sector);
md_write_end(conf->mddev);
bio_endio(wbi);
wbi = wbi2;
}
md_bitmap_endwrite(conf->mddev->bitmap, sh->sector,
STRIPE_SECTORS,
RAID5_STRIPE_SECTORS(conf),
!test_bit(STRIPE_DEGRADED, &sh->state),
0);
if (head_sh->batch_head) {
@ -4099,7 +4118,7 @@ static void handle_parity_checks5(struct r5conf *conf, struct stripe_head *sh,
*/
set_bit(STRIPE_INSYNC, &sh->state);
else {
atomic64_add(STRIPE_SECTORS, &conf->mddev->resync_mismatches);
atomic64_add(RAID5_STRIPE_SECTORS(conf), &conf->mddev->resync_mismatches);
if (test_bit(MD_RECOVERY_CHECK, &conf->mddev->recovery)) {
/* don't try to repair!! */
set_bit(STRIPE_INSYNC, &sh->state);
@ -4107,7 +4126,7 @@ static void handle_parity_checks5(struct r5conf *conf, struct stripe_head *sh,
"%llu-%llu\n", mdname(conf->mddev),
(unsigned long long) sh->sector,
(unsigned long long) sh->sector +
STRIPE_SECTORS);
RAID5_STRIPE_SECTORS(conf));
} else {
sh->check_state = check_state_compute_run;
set_bit(STRIPE_COMPUTE_RUN, &sh->state);
@ -4264,7 +4283,7 @@ static void handle_parity_checks6(struct r5conf *conf, struct stripe_head *sh,
*/
}
} else {
atomic64_add(STRIPE_SECTORS, &conf->mddev->resync_mismatches);
atomic64_add(RAID5_STRIPE_SECTORS(conf), &conf->mddev->resync_mismatches);
if (test_bit(MD_RECOVERY_CHECK, &conf->mddev->recovery)) {
/* don't try to repair!! */
set_bit(STRIPE_INSYNC, &sh->state);
@ -4272,7 +4291,7 @@ static void handle_parity_checks6(struct r5conf *conf, struct stripe_head *sh,
"%llu-%llu\n", mdname(conf->mddev),
(unsigned long long) sh->sector,
(unsigned long long) sh->sector +
STRIPE_SECTORS);
RAID5_STRIPE_SECTORS(conf));
} else {
int *target = &sh->ops.target;
@ -4343,7 +4362,7 @@ static void handle_stripe_expansion(struct r5conf *conf, struct stripe_head *sh)
/* place all the copies on one channel */
init_async_submit(&submit, 0, tx, NULL, NULL, NULL);
tx = async_memcpy(sh2->dev[dd_idx].page,
sh->dev[i].page, 0, 0, STRIPE_SIZE,
sh->dev[i].page, 0, 0, RAID5_STRIPE_SIZE(conf),
&submit);
set_bit(R5_Expanded, &sh2->dev[dd_idx].flags);
@ -4442,8 +4461,8 @@ static void analyse_stripe(struct stripe_head *sh, struct stripe_head_state *s)
*/
rdev = rcu_dereference(conf->disks[i].replacement);
if (rdev && !test_bit(Faulty, &rdev->flags) &&
rdev->recovery_offset >= sh->sector + STRIPE_SECTORS &&
!is_badblock(rdev, sh->sector, STRIPE_SECTORS,
rdev->recovery_offset >= sh->sector + RAID5_STRIPE_SECTORS(conf) &&
!is_badblock(rdev, sh->sector, RAID5_STRIPE_SECTORS(conf),
&first_bad, &bad_sectors))
set_bit(R5_ReadRepl, &dev->flags);
else {
@ -4457,7 +4476,7 @@ static void analyse_stripe(struct stripe_head *sh, struct stripe_head_state *s)
if (rdev && test_bit(Faulty, &rdev->flags))
rdev = NULL;
if (rdev) {
is_bad = is_badblock(rdev, sh->sector, STRIPE_SECTORS,
is_bad = is_badblock(rdev, sh->sector, RAID5_STRIPE_SECTORS(conf),
&first_bad, &bad_sectors);
if (s->blocked_rdev == NULL
&& (test_bit(Blocked, &rdev->flags)
@ -4484,7 +4503,7 @@ static void analyse_stripe(struct stripe_head *sh, struct stripe_head_state *s)
}
} else if (test_bit(In_sync, &rdev->flags))
set_bit(R5_Insync, &dev->flags);
else if (sh->sector + STRIPE_SECTORS <= rdev->recovery_offset)
else if (sh->sector + RAID5_STRIPE_SECTORS(conf) <= rdev->recovery_offset)
/* in sync if before recovery_offset */
set_bit(R5_Insync, &dev->flags);
else if (test_bit(R5_UPTODATE, &dev->flags) &&
@ -4573,12 +4592,12 @@ static void analyse_stripe(struct stripe_head *sh, struct stripe_head_state *s)
rcu_read_unlock();
}
/*
* Return '1' if this is a member of batch, or '0' if it is a lone stripe or
* a head which can now be handled.
*/
static int clear_batch_ready(struct stripe_head *sh)
{
/* Return '1' if this is a member of batch, or
* '0' if it is a lone stripe or a head which can now be
* handled.
*/
struct stripe_head *tmp;
if (!test_and_clear_bit(STRIPE_BATCH_READY, &sh->state))
return (sh->batch_head && sh->batch_head != sh);
@ -4682,6 +4701,16 @@ static void handle_stripe(struct stripe_head *sh)
struct r5dev *pdev, *qdev;
clear_bit(STRIPE_HANDLE, &sh->state);
/*
* handle_stripe should not continue handle the batched stripe, only
* the head of batch list or lone stripe can continue. Otherwise we
* could see break_stripe_batch_list warns about the STRIPE_ACTIVE
* is set for the batched stripe.
*/
if (clear_batch_ready(sh))
return;
if (test_and_set_bit_lock(STRIPE_ACTIVE, &sh->state)) {
/* already being handled, ensure it gets handled
* again when current action finishes */
@ -4689,11 +4718,6 @@ static void handle_stripe(struct stripe_head *sh)
return;
}
if (clear_batch_ready(sh) ) {
clear_bit_unlock(STRIPE_ACTIVE, &sh->state);
return;
}
if (test_and_clear_bit(STRIPE_BATCH_ERR, &sh->state))
break_stripe_batch_list(sh, 0);
@ -4927,7 +4951,7 @@ static void handle_stripe(struct stripe_head *sh)
if ((s.syncing || s.replacing) && s.locked == 0 &&
!test_bit(STRIPE_COMPUTE_RUN, &sh->state) &&
test_bit(STRIPE_INSYNC, &sh->state)) {
md_done_sync(conf->mddev, STRIPE_SECTORS, 1);
md_done_sync(conf->mddev, RAID5_STRIPE_SECTORS(conf), 1);
clear_bit(STRIPE_SYNCING, &sh->state);
if (test_and_clear_bit(R5_Overlap, &sh->dev[sh->pd_idx].flags))
wake_up(&conf->wait_for_overlap);
@ -4995,7 +5019,7 @@ static void handle_stripe(struct stripe_head *sh)
clear_bit(STRIPE_EXPAND_READY, &sh->state);
atomic_dec(&conf->reshape_stripes);
wake_up(&conf->wait_for_overlap);
md_done_sync(conf->mddev, STRIPE_SECTORS, 1);
md_done_sync(conf->mddev, RAID5_STRIPE_SECTORS(conf), 1);
}
if (s.expanding && s.locked == 0 &&
@ -5025,14 +5049,14 @@ finish:
/* We own a safe reference to the rdev */
rdev = conf->disks[i].rdev;
if (!rdev_set_badblocks(rdev, sh->sector,
STRIPE_SECTORS, 0))
RAID5_STRIPE_SECTORS(conf), 0))
md_error(conf->mddev, rdev);
rdev_dec_pending(rdev, conf->mddev);
}
if (test_and_clear_bit(R5_MadeGood, &dev->flags)) {
rdev = conf->disks[i].rdev;
rdev_clear_badblocks(rdev, sh->sector,
STRIPE_SECTORS, 0);
RAID5_STRIPE_SECTORS(conf), 0);
rdev_dec_pending(rdev, conf->mddev);
}
if (test_and_clear_bit(R5_MadeGoodRepl, &dev->flags)) {
@ -5041,7 +5065,7 @@ finish:
/* rdev have been moved down */
rdev = conf->disks[i].rdev;
rdev_clear_badblocks(rdev, sh->sector,
STRIPE_SECTORS, 0);
RAID5_STRIPE_SECTORS(conf), 0);
rdev_dec_pending(rdev, conf->mddev);
}
}
@ -5505,7 +5529,7 @@ static void make_discard_request(struct mddev *mddev, struct bio *bi)
/* Skip discard while reshape is happening */
return;
logical_sector = bi->bi_iter.bi_sector & ~((sector_t)STRIPE_SECTORS-1);
logical_sector = bi->bi_iter.bi_sector & ~((sector_t)RAID5_STRIPE_SECTORS(conf)-1);
last_sector = bio_end_sector(bi);
bi->bi_next = NULL;
@ -5520,7 +5544,7 @@ static void make_discard_request(struct mddev *mddev, struct bio *bi)
last_sector *= conf->chunk_sectors;
for (; logical_sector < last_sector;
logical_sector += STRIPE_SECTORS) {
logical_sector += RAID5_STRIPE_SECTORS(conf)) {
DEFINE_WAIT(w);
int d;
again:
@ -5565,7 +5589,7 @@ static void make_discard_request(struct mddev *mddev, struct bio *bi)
d++)
md_bitmap_startwrite(mddev->bitmap,
sh->sector,
STRIPE_SECTORS,
RAID5_STRIPE_SECTORS(conf),
0);
sh->bm_seq = conf->seq_flush + 1;
set_bit(STRIPE_BIT_DELAY, &sh->state);
@ -5630,12 +5654,12 @@ static bool raid5_make_request(struct mddev *mddev, struct bio * bi)
return true;
}
logical_sector = bi->bi_iter.bi_sector & ~((sector_t)STRIPE_SECTORS-1);
logical_sector = bi->bi_iter.bi_sector & ~((sector_t)RAID5_STRIPE_SECTORS(conf)-1);
last_sector = bio_end_sector(bi);
bi->bi_next = NULL;
prepare_to_wait(&conf->wait_for_overlap, &w, TASK_UNINTERRUPTIBLE);
for (;logical_sector < last_sector; logical_sector += STRIPE_SECTORS) {
for (; logical_sector < last_sector; logical_sector += RAID5_STRIPE_SECTORS(conf)) {
int previous;
int seq;
@ -5733,8 +5757,7 @@ static bool raid5_make_request(struct mddev *mddev, struct bio * bi)
do_flush = false;
}
if (!sh->batch_head || sh == sh->batch_head)
set_bit(STRIPE_HANDLE, &sh->state);
set_bit(STRIPE_HANDLE, &sh->state);
clear_bit(STRIPE_DELAYED, &sh->state);
if ((!sh->batch_head || sh == sh->batch_head) &&
(bi->bi_opf & REQ_SYNC) &&
@ -5917,7 +5940,7 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr, int *sk
}
INIT_LIST_HEAD(&stripes);
for (i = 0; i < reshape_sectors; i += STRIPE_SECTORS) {
for (i = 0; i < reshape_sectors; i += RAID5_STRIPE_SECTORS(conf)) {
int j;
int skipped_disk = 0;
sh = raid5_get_active_stripe(conf, stripe_addr+i, 0, 0, 1);
@ -5938,7 +5961,7 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr, int *sk
skipped_disk = 1;
continue;
}
memset(page_address(sh->dev[j].page), 0, STRIPE_SIZE);
memset(page_address(sh->dev[j].page), 0, RAID5_STRIPE_SIZE(conf));
set_bit(R5_Expanded, &sh->dev[j].flags);
set_bit(R5_UPTODATE, &sh->dev[j].flags);
}
@ -5973,7 +5996,7 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr, int *sk
set_bit(STRIPE_EXPAND_SOURCE, &sh->state);
set_bit(STRIPE_HANDLE, &sh->state);
raid5_release_stripe(sh);
first_sector += STRIPE_SECTORS;
first_sector += RAID5_STRIPE_SECTORS(conf);
}
/* Now that the sources are clearly marked, we can release
* the destination stripes
@ -6079,11 +6102,12 @@ static inline sector_t raid5_sync_request(struct mddev *mddev, sector_t sector_n
if (!test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery) &&
!conf->fullsync &&
!md_bitmap_start_sync(mddev->bitmap, sector_nr, &sync_blocks, 1) &&
sync_blocks >= STRIPE_SECTORS) {
sync_blocks >= RAID5_STRIPE_SECTORS(conf)) {
/* we can skip this block, and probably more */
sync_blocks /= STRIPE_SECTORS;
sync_blocks /= RAID5_STRIPE_SECTORS(conf);
*skipped = 1;
return sync_blocks * STRIPE_SECTORS; /* keep things rounded to whole stripes */
/* keep things rounded to whole stripes */
return sync_blocks * RAID5_STRIPE_SECTORS(conf);
}
md_bitmap_cond_end_sync(mddev->bitmap, sector_nr, false);
@ -6116,7 +6140,7 @@ static inline sector_t raid5_sync_request(struct mddev *mddev, sector_t sector_n
raid5_release_stripe(sh);
return STRIPE_SECTORS;
return RAID5_STRIPE_SECTORS(conf);
}
static int retry_aligned_read(struct r5conf *conf, struct bio *raid_bio,
@ -6139,14 +6163,14 @@ static int retry_aligned_read(struct r5conf *conf, struct bio *raid_bio,
int handled = 0;
logical_sector = raid_bio->bi_iter.bi_sector &
~((sector_t)STRIPE_SECTORS-1);
~((sector_t)RAID5_STRIPE_SECTORS(conf)-1);
sector = raid5_compute_sector(conf, logical_sector,
0, &dd_idx, NULL);
last_sector = bio_end_sector(raid_bio);
for (; logical_sector < last_sector;
logical_sector += STRIPE_SECTORS,
sector += STRIPE_SECTORS,
logical_sector += RAID5_STRIPE_SECTORS(conf),
sector += RAID5_STRIPE_SECTORS(conf),
scnt++) {
if (scnt < offset)
@ -6479,6 +6503,77 @@ raid5_rmw_level = __ATTR(rmw_level, S_IRUGO | S_IWUSR,
raid5_show_rmw_level,
raid5_store_rmw_level);
static ssize_t
raid5_show_stripe_size(struct mddev *mddev, char *page)
{
struct r5conf *conf;
int ret = 0;
spin_lock(&mddev->lock);
conf = mddev->private;
if (conf)
ret = sprintf(page, "%lu\n", RAID5_STRIPE_SIZE(conf));
spin_unlock(&mddev->lock);
return ret;
}
#if PAGE_SIZE != DEFAULT_STRIPE_SIZE
static ssize_t
raid5_store_stripe_size(struct mddev *mddev, const char *page, size_t len)
{
struct r5conf *conf;
unsigned long new;
int err;
if (len >= PAGE_SIZE)
return -EINVAL;
if (kstrtoul(page, 10, &new))
return -EINVAL;
/*
* The value should not be bigger than PAGE_SIZE. It requires to
* be multiple of DEFAULT_STRIPE_SIZE.
*/
if (new % DEFAULT_STRIPE_SIZE != 0 || new > PAGE_SIZE || new == 0)
return -EINVAL;
err = mddev_lock(mddev);
if (err)
return err;
conf = mddev->private;
if (!conf) {
err = -ENODEV;
goto out_unlock;
}
if (new == conf->stripe_size)
goto out_unlock;
pr_debug("md/raid: change stripe_size from %lu to %lu\n",
conf->stripe_size, new);
mddev_suspend(mddev);
conf->stripe_size = new;
conf->stripe_shift = ilog2(new) - 9;
conf->stripe_sectors = new >> 9;
mddev_resume(mddev);
out_unlock:
mddev_unlock(mddev);
return err ?: len;
}
static struct md_sysfs_entry
raid5_stripe_size = __ATTR(stripe_size, 0644,
raid5_show_stripe_size,
raid5_store_stripe_size);
#else
static struct md_sysfs_entry
raid5_stripe_size = __ATTR(stripe_size, 0444,
raid5_show_stripe_size,
NULL);
#endif
static ssize_t
raid5_show_preread_threshold(struct mddev *mddev, char *page)
@ -6667,6 +6762,7 @@ static struct attribute *raid5_attrs[] = {
&raid5_group_thread_cnt.attr,
&raid5_skip_copy.attr,
&raid5_rmw_level.attr,
&raid5_stripe_size.attr,
&r5c_journal_mode.attr,
&ppl_write_hint.attr,
NULL,
@ -6766,7 +6862,7 @@ static int alloc_scratch_buffer(struct r5conf *conf, struct raid5_percpu *percpu
conf->previous_raid_disks),
max(conf->chunk_sectors,
conf->prev_chunk_sectors)
/ STRIPE_SECTORS)) {
/ RAID5_STRIPE_SECTORS(conf))) {
free_scratch_buffer(conf, percpu);
return -ENOMEM;
}
@ -6918,6 +7014,12 @@ static struct r5conf *setup_conf(struct mddev *mddev)
conf = kzalloc(sizeof(struct r5conf), GFP_KERNEL);
if (conf == NULL)
goto abort;
#if PAGE_SIZE != DEFAULT_STRIPE_SIZE
conf->stripe_size = DEFAULT_STRIPE_SIZE;
conf->stripe_shift = ilog2(DEFAULT_STRIPE_SIZE) - 9;
conf->stripe_sectors = DEFAULT_STRIPE_SIZE >> 9;
#endif
INIT_LIST_HEAD(&conf->free_list);
INIT_LIST_HEAD(&conf->pending_list);
conf->pending_data = kcalloc(PENDING_IO_MAX,
@ -7069,8 +7171,8 @@ static struct r5conf *setup_conf(struct mddev *mddev)
conf->min_nr_stripes = NR_STRIPES;
if (mddev->reshape_position != MaxSector) {
int stripes = max_t(int,
((mddev->chunk_sectors << 9) / STRIPE_SIZE) * 4,
((mddev->new_chunk_sectors << 9) / STRIPE_SIZE) * 4);
((mddev->chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4,
((mddev->new_chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4);
conf->min_nr_stripes = max(NR_STRIPES, stripes);
if (conf->min_nr_stripes != NR_STRIPES)
pr_info("md/raid:%s: force stripe size %d for reshape\n",
@ -7801,14 +7903,14 @@ static int check_stripe_cache(struct mddev *mddev)
* stripe_heads first.
*/
struct r5conf *conf = mddev->private;
if (((mddev->chunk_sectors << 9) / STRIPE_SIZE) * 4
if (((mddev->chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4
> conf->min_nr_stripes ||
((mddev->new_chunk_sectors << 9) / STRIPE_SIZE) * 4
((mddev->new_chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4
> conf->min_nr_stripes) {
pr_warn("md/raid:%s: reshape: not enough stripes. Needed %lu\n",
mdname(mddev),
((max(mddev->chunk_sectors, mddev->new_chunk_sectors) << 9)
/ STRIPE_SIZE)*4);
/ RAID5_STRIPE_SIZE(conf))*4);
return 0;
}
return 1;
@ -7944,8 +8046,8 @@ static int raid5_start_reshape(struct mddev *mddev)
else
rdev->recovery_offset = 0;
if (sysfs_link_rdev(mddev, rdev))
/* Failure here is OK */;
/* Failure here is OK */
sysfs_link_rdev(mddev, rdev);
}
} else if (rdev->raid_disk >= conf->previous_raid_disks
&& !test_bit(Faulty, &rdev->flags)) {
@ -8140,7 +8242,7 @@ static void *raid5_takeover_raid1(struct mddev *mddev)
while (chunksect && (mddev->array_sectors & (chunksect-1)))
chunksect >>= 1;
if ((chunksect<<9) < STRIPE_SIZE)
if ((chunksect<<9) < RAID5_STRIPE_SIZE((struct r5conf *)mddev->private))
/* array size does not allow a suitable chunk size */
return ERR_PTR(-EINVAL);

53
drivers/md/raid5.h
View File

@ -472,32 +472,20 @@ struct disk_info {
*/
#define NR_STRIPES 256
#define DEFAULT_STRIPE_SIZE 4096
#if PAGE_SIZE == DEFAULT_STRIPE_SIZE
#define STRIPE_SIZE PAGE_SIZE
#define STRIPE_SHIFT (PAGE_SHIFT - 9)
#define STRIPE_SECTORS (STRIPE_SIZE>>9)
#endif
#define IO_THRESHOLD 1
#define BYPASS_THRESHOLD 1
#define NR_HASH (PAGE_SIZE / sizeof(struct hlist_head))
#define HASH_MASK (NR_HASH - 1)
#define MAX_STRIPE_BATCH 8
/* bio's attached to a stripe+device for I/O are linked together in bi_sector
* order without overlap. There may be several bio's per stripe+device, and
* a bio could span several devices.
* When walking this list for a particular stripe+device, we must never proceed
* beyond a bio that extends past this device, as the next bio might no longer
* be valid.
* This function is used to determine the 'next' bio in the list, given the
* sector of the current stripe+device
*/
static inline struct bio *r5_next_bio(struct bio *bio, sector_t sector)
{
if (bio_end_sector(bio) < sector + STRIPE_SECTORS)
return bio->bi_next;
else
return NULL;
}
/* NOTE NR_STRIPE_HASH_LOCKS must remain below 64.
* This is because we sometimes take all the spinlocks
* and creating that much locking depth can cause
@ -574,6 +562,11 @@ struct r5conf {
int raid_disks;
int max_nr_stripes;
int min_nr_stripes;
#if PAGE_SIZE != DEFAULT_STRIPE_SIZE
unsigned long stripe_size;
unsigned int stripe_shift;
unsigned long stripe_sectors;
#endif
/* reshape_progress is the leading edge of a 'reshape'
* It has value MaxSector when no reshape is happening
@ -690,6 +683,32 @@ struct r5conf {
struct r5pending_data *next_pending_data;
};
#if PAGE_SIZE == DEFAULT_STRIPE_SIZE
#define RAID5_STRIPE_SIZE(conf) STRIPE_SIZE
#define RAID5_STRIPE_SHIFT(conf) STRIPE_SHIFT
#define RAID5_STRIPE_SECTORS(conf) STRIPE_SECTORS
#else
#define RAID5_STRIPE_SIZE(conf) ((conf)->stripe_size)
#define RAID5_STRIPE_SHIFT(conf) ((conf)->stripe_shift)
#define RAID5_STRIPE_SECTORS(conf) ((conf)->stripe_sectors)
#endif
/* bio's attached to a stripe+device for I/O are linked together in bi_sector
* order without overlap. There may be several bio's per stripe+device, and
* a bio could span several devices.
* When walking this list for a particular stripe+device, we must never proceed
* beyond a bio that extends past this device, as the next bio might no longer
* be valid.
* This function is used to determine the 'next' bio in the list, given the
* sector of the current stripe+device
*/
static inline struct bio *r5_next_bio(struct r5conf *conf, struct bio *bio, sector_t sector)
{
if (bio_end_sector(bio) < sector + RAID5_STRIPE_SECTORS(conf))
return bio->bi_next;
else
return NULL;
}
/*
* Our supported algorithms

2
include/uapi/linux/raid/md_p.h
View File

@ -123,7 +123,7 @@ typedef struct mdp_device_descriptor_s {
/*
* Notes:
* - if an array is being reshaped (restriped) in order to change the
* - if an array is being reshaped (restriped) in order to change
* the number of active devices in the array, 'raid_disks' will be
* the larger of the old and new numbers. 'delta_disks' will
* be the "new - old". So if +ve, raid_disks is the new value, and