diff --git a/drivers/dax/super.c b/drivers/dax/super.c
index 903d9c473749c24d636f573aba798a9680df2909..45276abf03aa2bd52aa9af56b8cbd45a4b1e5135 100644
--- a/drivers/dax/super.c
+++ b/drivers/dax/super.c
@@ -86,6 +86,7 @@ bool __bdev_dax_supported(struct block_device *bdev, int blocksize)
{
struct dax_device *dax_dev;
bool dax_enabled = false;
+ struct request_queue *q;
pgoff_t pgoff;
int err, id;
void *kaddr;
@@ -99,6 +100,13 @@ bool __bdev_dax_supported(struct block_device *bdev, int blocksize)
return false;
}
+ q = bdev_get_queue(bdev);
+ if (!q || !blk_queue_dax(q)) {
+ pr_debug("%s: error: request queue doesn't support dax\n",
+ bdevname(bdev, buf));
+ return false;
+ }
+
err = bdev_dax_pgoff(bdev, 0, PAGE_SIZE, &pgoff);
if (err) {
pr_debug("%s: error: unaligned partition for dax\n",
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index ab13fcec3fca046c3da6fd621f0e0db9c47b1bf9..75df4c9d8b541de480dfea8d823e0eff389d9ccd 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -588,7 +588,7 @@ static const char *raid10_md_layout_to_format(int layout)
}
/* Return md raid10 algorithm for @name */
-static const int raid10_name_to_format(const char *name)
+static int raid10_name_to_format(const char *name)
{
if (!strcasecmp(name, "near"))
return ALGORITHM_RAID10_NEAR;
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 938766794c2ef3b6caf538a0fa787447eadb160c..3d0e2c198f0614dbaf22db657a2bfc9336f89ebd 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -885,9 +885,7 @@ EXPORT_SYMBOL_GPL(dm_table_set_type);
static int device_supports_dax(struct dm_target *ti, struct dm_dev *dev,
sector_t start, sector_t len, void *data)
{
- struct request_queue *q = bdev_get_queue(dev->bdev);
-
- return q && blk_queue_dax(q);
+ return bdev_dax_supported(dev->bdev, PAGE_SIZE);
}
static bool dm_table_supports_dax(struct dm_table *t)
@@ -1907,6 +1905,9 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
if (dm_table_supports_dax(t))
blk_queue_flag_set(QUEUE_FLAG_DAX, q);
+ else
+ blk_queue_flag_clear(QUEUE_FLAG_DAX, q);
+
if (dm_table_supports_dax_write_cache(t))
dax_write_cache(t->md->dax_dev, true);
diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 36ef284ad086b881324771d4f882dc6fa96d6dde..72142021b5c9a0410cfb6ccb04a93d613376fb53 100644
--- a/drivers/md/dm-thin-metadata.c
+++ b/drivers/md/dm-thin-metadata.c
@@ -776,7 +776,6 @@ static int __write_changed_details(struct dm_pool_metadata *pmd)
static int __commit_transaction(struct dm_pool_metadata *pmd)
{
int r;
- size_t metadata_len, data_len;
struct thin_disk_superblock *disk_super;
struct dm_block *sblock;
@@ -797,14 +796,6 @@ static int __commit_transaction(struct dm_pool_metadata *pmd)
if (r < 0)
return r;
- r = dm_sm_root_size(pmd->metadata_sm, &metadata_len);
- if (r < 0)
- return r;
-
- r = dm_sm_root_size(pmd->data_sm, &data_len);
- if (r < 0)
- return r;
-
r = save_sm_roots(pmd);
if (r < 0)
return r;
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 7945238df1c0a67a8e525697f0e419c7594ed1ad..b900723bbd0fae4845a17ef67dadcf33dc5cc67b 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -1386,6 +1386,8 @@ static void schedule_external_copy(struct thin_c *tc, dm_block_t virt_block,
static void set_pool_mode(struct pool *pool, enum pool_mode new_mode);
+static void requeue_bios(struct pool *pool);
+
static void check_for_space(struct pool *pool)
{
int r;
@@ -1398,8 +1400,10 @@ static void check_for_space(struct pool *pool)
if (r)
return;
- if (nr_free)
+ if (nr_free) {
set_pool_mode(pool, PM_WRITE);
+ requeue_bios(pool);
+ }
}
/*
@@ -1476,7 +1480,10 @@ static int alloc_data_block(struct thin_c *tc, dm_block_t *result)
r = dm_pool_alloc_data_block(pool->pmd, result);
if (r) {
- metadata_operation_failed(pool, "dm_pool_alloc_data_block", r);
+ if (r == -ENOSPC)
+ set_pool_mode(pool, PM_OUT_OF_DATA_SPACE);
+ else
+ metadata_operation_failed(pool, "dm_pool_alloc_data_block", r);
return r;
}
diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c
index 5961c7794ef37008f7a10f521517aded086f20f3..07ea6a48aac69a1db35567222c4b8123f2ef9e59 100644
--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -259,7 +259,7 @@ static int persistent_memory_claim(struct dm_writecache *wc)
if (da != p) {
long i;
wc->memory_map = NULL;
- pages = kvmalloc(p * sizeof(struct page *), GFP_KERNEL);
+ pages = kvmalloc_array(p, sizeof(struct page *), GFP_KERNEL);
if (!pages) {
r = -ENOMEM;
goto err2;
@@ -859,7 +859,7 @@ static int writecache_alloc_entries(struct dm_writecache *wc)
if (wc->entries)
return 0;
- wc->entries = vmalloc(sizeof(struct wc_entry) * wc->n_blocks);
+ wc->entries = vmalloc(array_size(sizeof(struct wc_entry), wc->n_blocks));
if (!wc->entries)
return -ENOMEM;
for (b = 0; b < wc->n_blocks; b++) {
@@ -1481,9 +1481,9 @@ static void __writecache_writeback_pmem(struct dm_writecache *wc, struct writeba
wb->bio.bi_iter.bi_sector = read_original_sector(wc, e);
wb->page_offset = PAGE_SIZE;
if (max_pages <= WB_LIST_INLINE ||
- unlikely(!(wb->wc_list = kmalloc(max_pages * sizeof(struct wc_entry *),
- GFP_NOIO | __GFP_NORETRY |
- __GFP_NOMEMALLOC | __GFP_NOWARN)))) {
+ unlikely(!(wb->wc_list = kmalloc_array(max_pages, sizeof(struct wc_entry *),
+ GFP_NOIO | __GFP_NORETRY |
+ __GFP_NOMEMALLOC | __GFP_NOWARN)))) {
wb->wc_list = wb->wc_list_inline;
max_pages = WB_LIST_INLINE;
}
diff --git a/drivers/md/dm-zoned-target.c b/drivers/md/dm-zoned-target.c
index 3c0e45f4dcf5cdf06d79b0c9d107d7455a0b6ad7..a44183ff4be0a3bd4219a7bf5854622aeca79db2 100644
--- a/drivers/md/dm-zoned-target.c
+++ b/drivers/md/dm-zoned-target.c
@@ -787,7 +787,7 @@ static int dmz_ctr(struct dm_target *ti, unsigned int argc, char **argv)
/* Chunk BIO work */
mutex_init(&dmz->chunk_lock);
- INIT_RADIX_TREE(&dmz->chunk_rxtree, GFP_KERNEL);
+ INIT_RADIX_TREE(&dmz->chunk_rxtree, GFP_NOIO);
dmz->chunk_wq = alloc_workqueue("dmz_cwq_%s", WQ_MEM_RECLAIM | WQ_UNBOUND,
0, dev->name);
if (!dmz->chunk_wq) {
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index e65429a29c06e2554e8a0e23ba5a0b2a3b18a8c8..b0dd7027848b7de9f701469c6eb29b5d9c96e1df 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1056,8 +1056,7 @@ static long dm_dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff,
if (len < 1)
goto out;
nr_pages = min(len, nr_pages);
- if (ti->type->direct_access)
- ret = ti->type->direct_access(ti, pgoff, nr_pages, kaddr, pfn);
+ ret = ti->type->direct_access(ti, pgoff, nr_pages, kaddr, pfn);
out:
dm_put_live_table(md, srcu_idx);
@@ -1606,10 +1605,9 @@ static blk_qc_t __split_and_process_bio(struct mapped_device *md,
* the usage of io->orig_bio in dm_remap_zone_report()
* won't be affected by this reassignment.
*/
- struct bio *b = bio_clone_bioset(bio, GFP_NOIO,
- &md->queue->bio_split);
+ struct bio *b = bio_split(bio, bio_sectors(bio) - ci.sector_count,
+ GFP_NOIO, &md->queue->bio_split);
ci.io->orig_bio = b;
- bio_advance(bio, (bio_sectors(bio) - ci.sector_count) << 9);
bio_chain(b, bio);
ret = generic_make_request(bio);
break;
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 68940356cad3f100f4cfbdd325d42235ea3c5da4..8b1fd7f1a224eedebf08cddfe2258949c50a6bcf 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -414,7 +414,8 @@ static int pmem_attach_disk(struct device *dev,
blk_queue_logical_block_size(q, pmem_sector_size(ndns));
blk_queue_max_hw_sectors(q, UINT_MAX);
blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
- blk_queue_flag_set(QUEUE_FLAG_DAX, q);
+ if (pmem->pfn_flags & PFN_MAP)
+ blk_queue_flag_set(QUEUE_FLAG_DAX, q);
q->queuedata = pmem;
disk = alloc_disk_node(0, nid);