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authorLinus Torvalds <torvalds@linux-foundation.org>2015-10-04 11:47:28 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2015-10-04 11:47:28 +0100
commit15ecf9a986e2678f5de36ead23b89235612fc03f (patch)
tree2eb463a995f42091a147a5093e1d3b818b78206e
parent0d8770815f70cf41b69a82ede272b026dbb2df7d (diff)
parentda6fb7a9e5bd6f04f7e15070f630bdf1ea502841 (diff)
downloadlwn-15ecf9a986e2678f5de36ead23b89235612fc03f.tar.gz
lwn-15ecf9a986e2678f5de36ead23b89235612fc03f.zip
Merge tag 'md/4.3-fixes' of git://neil.brown.name/md
Pull md fixes from Neil Brown: "Assorted fixes for md in 4.3-rc. Two tagged for -stable, and one is really a cleanup to match and improve kmemcache interface. * tag 'md/4.3-fixes' of git://neil.brown.name/md: md/bitmap: don't pass -1 to bitmap_storage_alloc. md/raid1: Avoid raid1 resync getting stuck md: drop null test before destroy functions md: clear CHANGE_PENDING in readonly array md/raid0: apply base queue limits *before* disk_stack_limits md/raid5: don't index beyond end of array in need_this_block(). raid5: update analysis state for failed stripe md: wait for pending superblock updates before switching to read-only
-rw-r--r--drivers/md/bitmap.c3
-rw-r--r--drivers/md/md.c5
-rw-r--r--drivers/md/multipath.c3
-rw-r--r--drivers/md/raid0.c12
-rw-r--r--drivers/md/raid1.c11
-rw-r--r--drivers/md/raid10.c9
-rw-r--r--drivers/md/raid5.c11
7 files changed, 28 insertions, 26 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index e51de52eeb94..48b5890c28e3 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -1997,7 +1997,8 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks,
if (bitmap->mddev->bitmap_info.offset || bitmap->mddev->bitmap_info.file)
ret = bitmap_storage_alloc(&store, chunks,
!bitmap->mddev->bitmap_info.external,
- bitmap->cluster_slot);
+ mddev_is_clustered(bitmap->mddev)
+ ? bitmap->cluster_slot : 0);
if (ret)
goto err;
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 4f5ecbe94ccb..c702de18207a 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5409,9 +5409,13 @@ static int md_set_readonly(struct mddev *mddev, struct block_device *bdev)
* which will now never happen */
wake_up_process(mddev->sync_thread->tsk);
+ if (mddev->external && test_bit(MD_CHANGE_PENDING, &mddev->flags))
+ return -EBUSY;
mddev_unlock(mddev);
wait_event(resync_wait, !test_bit(MD_RECOVERY_RUNNING,
&mddev->recovery));
+ wait_event(mddev->sb_wait,
+ !test_bit(MD_CHANGE_PENDING, &mddev->flags));
mddev_lock_nointr(mddev);
mutex_lock(&mddev->open_mutex);
@@ -8160,6 +8164,7 @@ void md_check_recovery(struct mddev *mddev)
md_reap_sync_thread(mddev);
clear_bit(MD_RECOVERY_RECOVER, &mddev->recovery);
clear_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
+ clear_bit(MD_CHANGE_PENDING, &mddev->flags);
goto unlock;
}
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index d222522c52e0..d132f06afdd1 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -470,8 +470,7 @@ static int multipath_run (struct mddev *mddev)
return 0;
out_free_conf:
- if (conf->pool)
- mempool_destroy(conf->pool);
+ mempool_destroy(conf->pool);
kfree(conf->multipaths);
kfree(conf);
mddev->private = NULL;
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 63e619b2f44e..f8e5db0cb5aa 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -376,12 +376,6 @@ static int raid0_run(struct mddev *mddev)
struct md_rdev *rdev;
bool discard_supported = false;
- rdev_for_each(rdev, mddev) {
- disk_stack_limits(mddev->gendisk, rdev->bdev,
- rdev->data_offset << 9);
- if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
- discard_supported = true;
- }
blk_queue_max_hw_sectors(mddev->queue, mddev->chunk_sectors);
blk_queue_max_write_same_sectors(mddev->queue, mddev->chunk_sectors);
blk_queue_max_discard_sectors(mddev->queue, mddev->chunk_sectors);
@@ -390,6 +384,12 @@ static int raid0_run(struct mddev *mddev)
blk_queue_io_opt(mddev->queue,
(mddev->chunk_sectors << 9) * mddev->raid_disks);
+ rdev_for_each(rdev, mddev) {
+ disk_stack_limits(mddev->gendisk, rdev->bdev,
+ rdev->data_offset << 9);
+ if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
+ discard_supported = true;
+ }
if (!discard_supported)
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
else
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 4517f06c41ba..049df6c4a8cc 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -881,8 +881,7 @@ static sector_t wait_barrier(struct r1conf *conf, struct bio *bio)
}
if (bio && bio_data_dir(bio) == WRITE) {
- if (bio->bi_iter.bi_sector >=
- conf->mddev->curr_resync_completed) {
+ if (bio->bi_iter.bi_sector >= conf->next_resync) {
if (conf->start_next_window == MaxSector)
conf->start_next_window =
conf->next_resync +
@@ -1516,7 +1515,7 @@ static void close_sync(struct r1conf *conf)
conf->r1buf_pool = NULL;
spin_lock_irq(&conf->resync_lock);
- conf->next_resync = 0;
+ conf->next_resync = MaxSector - 2 * NEXT_NORMALIO_DISTANCE;
conf->start_next_window = MaxSector;
conf->current_window_requests +=
conf->next_window_requests;
@@ -2843,8 +2842,7 @@ static struct r1conf *setup_conf(struct mddev *mddev)
abort:
if (conf) {
- if (conf->r1bio_pool)
- mempool_destroy(conf->r1bio_pool);
+ mempool_destroy(conf->r1bio_pool);
kfree(conf->mirrors);
safe_put_page(conf->tmppage);
kfree(conf->poolinfo);
@@ -2946,8 +2944,7 @@ static void raid1_free(struct mddev *mddev, void *priv)
{
struct r1conf *conf = priv;
- if (conf->r1bio_pool)
- mempool_destroy(conf->r1bio_pool);
+ mempool_destroy(conf->r1bio_pool);
kfree(conf->mirrors);
safe_put_page(conf->tmppage);
kfree(conf->poolinfo);
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 0fc33eb88855..7c99a4037715 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -3486,8 +3486,7 @@ 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);
@@ -3682,8 +3681,7 @@ 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);
@@ -3696,8 +3694,7 @@ 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);
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 15ef2c641b2b..49bb8d3ff9be 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -2271,8 +2271,7 @@ static void shrink_stripes(struct r5conf *conf)
drop_one_stripe(conf))
;
- if (conf->slab_cache)
- kmem_cache_destroy(conf->slab_cache);
+ kmem_cache_destroy(conf->slab_cache);
conf->slab_cache = NULL;
}
@@ -3150,6 +3149,8 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh,
spin_unlock_irq(&sh->stripe_lock);
if (test_and_clear_bit(R5_Overlap, &sh->dev[i].flags))
wake_up(&conf->wait_for_overlap);
+ if (bi)
+ s->to_read--;
while (bi && bi->bi_iter.bi_sector <
sh->dev[i].sector + STRIPE_SECTORS) {
struct bio *nextbi =
@@ -3169,6 +3170,8 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh,
*/
clear_bit(R5_LOCKED, &sh->dev[i].flags);
}
+ s->to_write = 0;
+ s->written = 0;
if (test_and_clear_bit(STRIPE_FULL_WRITE, &sh->state))
if (atomic_dec_and_test(&conf->pending_full_writes))
@@ -3300,7 +3303,7 @@ static int need_this_block(struct stripe_head *sh, struct stripe_head_state *s,
*/
return 0;
- for (i = 0; i < s->failed; i++) {
+ for (i = 0; i < s->failed && i < 2; i++) {
if (fdev[i]->towrite &&
!test_bit(R5_UPTODATE, &fdev[i]->flags) &&
!test_bit(R5_OVERWRITE, &fdev[i]->flags))
@@ -3324,7 +3327,7 @@ static int need_this_block(struct stripe_head *sh, struct stripe_head_state *s,
sh->sector < sh->raid_conf->mddev->recovery_cp)
/* reconstruct-write isn't being forced */
return 0;
- for (i = 0; i < s->failed; i++) {
+ for (i = 0; i < s->failed && i < 2; i++) {
if (s->failed_num[i] != sh->pd_idx &&
s->failed_num[i] != sh->qd_idx &&
!test_bit(R5_UPTODATE, &fdev[i]->flags) &&