diff --git a/mm/madvise.c b/mm/madvise.c
index 0734db8d53a7..50099430ee61 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -199,6 +199,7 @@ static int swapin_walk_pmd_entry(pmd_t *pmd, unsigned long start,
 		swp_entry_t entry;
 		struct page *page;
 		spinlock_t *ptl;
+		struct swap_info_struct *si;
 
 		orig_pte = pte_offset_map_lock(vma->vm_mm, pmd, start, &ptl);
 		pte = *(orig_pte + ((index - start) / PAGE_SIZE));
@@ -209,11 +210,15 @@ static int swapin_walk_pmd_entry(pmd_t *pmd, unsigned long start,
 		entry = pte_to_swp_entry(pte);
 		if (unlikely(non_swap_entry(entry)))
 			continue;
+		si = get_swap_device(entry);
+		if (!si)
+			continue;
 
 		page = read_swap_cache_async(entry, GFP_HIGHUSER_MOVABLE,
 							vma, index, false);
 		if (page)
 			put_page(page);
+		put_swap_device(si);
 	}
 
 	return 0;
@@ -234,6 +239,7 @@ static void force_shm_swapin_readahead(struct vm_area_struct *vma,
 	rcu_read_lock();
 	xas_for_each(&xas, page, end_index) {
 		swp_entry_t swap;
+		struct swap_info_struct *si;
 
 		if (!xa_is_value(page))
 			continue;
@@ -241,10 +247,14 @@ static void force_shm_swapin_readahead(struct vm_area_struct *vma,
 		rcu_read_unlock();
 
 		swap = radix_to_swp_entry(page);
+		si = get_swap_device(swap);
+		if (!si)
+			continue;
 		page = read_swap_cache_async(swap, GFP_HIGHUSER_MOVABLE,
 							NULL, 0, false);
 		if (page)
 			put_page(page);
+		put_swap_device(si);
 
 		rcu_read_lock();
 	}
diff --git a/mm/memory.c b/mm/memory.c
index 39e7a1495c3c..2e5e49470ca3 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1012,6 +1012,7 @@ copy_pte_range(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma,
 	int progress, ret = 0;
 	int rss[NR_MM_COUNTERS];
 	swp_entry_t entry = (swp_entry_t){0};
+	struct swap_info_struct *si;
 	struct page *prealloc = NULL;
 
 again:
@@ -1052,6 +1053,7 @@ copy_pte_range(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma,
 						  addr, rss);
 			if (ret == -EIO) {
 				entry = pte_to_swp_entry(*src_pte);
+				si = get_swap_device(entry);
 				break;
 			} else if (ret == -EBUSY) {
 				break;
@@ -1096,8 +1098,12 @@ copy_pte_range(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma,
 	cond_resched();
 
 	if (ret == -EIO) {
+		int err;
+
 		VM_WARN_ON_ONCE(!entry.val);
-		if (add_swap_count_continuation(entry, GFP_KERNEL) < 0) {
+		err = add_swap_count_continuation(entry, GFP_KERNEL);
+		put_swap_device(si);
+		if (err < 0) {
 			ret = -ENOMEM;
 			goto out;
 		}
diff --git a/mm/shmem.c b/mm/shmem.c
index a5ae8266891d..9893c9a63278 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1718,6 +1718,7 @@ static int shmem_swapin_page(struct inode *inode, pgoff_t index,
 	struct shmem_inode_info *info = SHMEM_I(inode);
 	struct mm_struct *charge_mm = vma ? vma->vm_mm : NULL;
 	struct page *page;
+	struct swap_info_struct *si;
 	swp_entry_t swap;
 	int error;
 
@@ -1725,6 +1726,9 @@ static int shmem_swapin_page(struct inode *inode, pgoff_t index,
 	swap = radix_to_swp_entry(*pagep);
 	*pagep = NULL;
 
+	si = get_swap_device(swap);
+	if (!si)
+		return -EEXIST;
 	/* Look it up and read it in.. */
 	page = lookup_swap_cache(swap, NULL, 0);
 	if (!page) {
@@ -1784,6 +1788,7 @@ static int shmem_swapin_page(struct inode *inode, pgoff_t index,
 	delete_from_swap_cache(page);
 	set_page_dirty(page);
 	swap_free(swap);
+	put_swap_device(si);
 
 	*pagep = page;
 	return 0;
@@ -1795,6 +1800,7 @@ static int shmem_swapin_page(struct inode *inode, pgoff_t index,
 		unlock_page(page);
 		put_page(page);
 	}
+	put_swap_device(si);
 
 	return error;
 }
diff --git a/mm/swap_state.c b/mm/swap_state.c
index 8d4104242100..89d5f189b2c1 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -335,14 +335,8 @@ struct page *lookup_swap_cache(swp_entry_t entry, struct vm_area_struct *vma,
 			       unsigned long addr)
 {
 	struct page *page;
-	struct swap_info_struct *si;
 
-	si = get_swap_device(entry);
-	if (!si)
-		return NULL;
 	page = find_get_page(swap_address_space(entry), swp_offset(entry));
-	put_swap_device(si);
-
 	INC_CACHE_INFO(find_total);
 	if (page) {
 		bool vma_ra = swap_use_vma_readahead();
@@ -418,7 +412,6 @@ struct page *__read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,
 			struct vm_area_struct *vma, unsigned long addr,
 			bool *new_page_allocated)
 {
-	struct swap_info_struct *si;
 	struct page *page;
 	void *shadow = NULL;
 
@@ -431,12 +424,8 @@ struct page *__read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,
 		 * called after lookup_swap_cache() failed, re-calling
 		 * that would confuse statistics.
 		 */
-		si = get_swap_device(entry);
-		if (!si)
-			return NULL;
 		page = find_get_page(swap_address_space(entry),
 				     swp_offset(entry));
-		put_swap_device(si);
 		if (page)
 			return page;
 
@@ -794,10 +783,12 @@ static struct page *swap_vma_readahead(swp_entry_t fentry, gfp_t gfp_mask,
 	pte_t *pte, pentry;
 	swp_entry_t entry;
 	unsigned int i;
+	unsigned int type, ftype = swp_type(fentry);
 	bool page_allocated;
 	struct vma_swap_readahead ra_info = {
 		.win = 1,
 	};
+	struct swap_info_struct *si = NULL;
 
 	swap_ra_info(vmf, &ra_info);
 	if (ra_info.win == 1)
@@ -814,6 +805,14 @@ static struct page *swap_vma_readahead(swp_entry_t fentry, gfp_t gfp_mask,
 		entry = pte_to_swp_entry(pentry);
 		if (unlikely(non_swap_entry(entry)))
 			continue;
+		type = swp_type(entry);
+		if (type != ftype && (!si || si->type != type)) {
+			if (si)
+				put_swap_device(si);
+			si = get_swap_device(entry);
+			if (!si)
+				continue;
+		}
 		page = __read_swap_cache_async(entry, gfp_mask, vma,
 					       vmf->address, &page_allocated);
 		if (!page)
@@ -827,6 +826,8 @@ static struct page *swap_vma_readahead(swp_entry_t fentry, gfp_t gfp_mask,
 		}
 		put_page(page);
 	}
+	if (si)
+		put_swap_device(si);
 	blk_finish_plug(&plug);
 	lru_add_drain();
 skip:
diff --git a/mm/swapfile.c b/mm/swapfile.c
index e3dcaeecc50f..d7cd7fe2eaf9 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1472,14 +1472,9 @@ int __swap_count(swp_entry_t entry)
 {
 	struct swap_info_struct *si;
 	pgoff_t offset = swp_offset(entry);
-	int count = 0;
 
-	si = get_swap_device(entry);
-	if (si) {
-		count = swap_count(si->swap_map[offset]);
-		put_swap_device(si);
-	}
-	return count;
+	si = swp_swap_info(entry);
+	return swap_count(si->swap_map[offset]);
 }
 
 static int swap_swapcount(struct swap_info_struct *si, swp_entry_t entry)
@@ -1501,15 +1496,10 @@ static int swap_swapcount(struct swap_info_struct *si, swp_entry_t entry)
  */
 int __swp_swapcount(swp_entry_t entry)
 {
-	int count = 0;
 	struct swap_info_struct *si;
 
-	si = get_swap_device(entry);
-	if (si) {
-		count = swap_swapcount(si, entry);
-		put_swap_device(si);
-	}
-	return count;
+	si = swp_swap_info(entry);
+	return swap_swapcount(si, entry);
 }
 
 /*
@@ -3430,10 +3420,7 @@ static int __swap_duplicate(swp_entry_t entry, unsigned char usage)
 	unsigned char has_cache;
 	int err;
 
-	p = get_swap_device(entry);
-	if (!p)
-		return -EINVAL;
-
+	p = swp_swap_info(entry);
 	offset = swp_offset(entry);
 	ci = lock_cluster_or_swap_info(p, offset);
 
@@ -3479,8 +3466,6 @@ static int __swap_duplicate(swp_entry_t entry, unsigned char usage)
 
 unlock_out:
 	unlock_cluster_or_swap_info(p, ci);
-	if (p)
-		put_swap_device(p);
 	return err;
 }
 
@@ -3581,14 +3566,7 @@ int add_swap_count_continuation(swp_entry_t entry, gfp_t gfp_mask)
 	 */
 	page = alloc_page(gfp_mask | __GFP_HIGHMEM);
 
-	si = get_swap_device(entry);
-	if (!si) {
-		/*
-		 * An acceptable race has occurred since the failing
-		 * __swap_duplicate(): the swap device may be swapoff
-		 */
-		goto outer;
-	}
+	si = swp_swap_info(entry);
 	spin_lock(&si->lock);
 
 	offset = swp_offset(entry);
@@ -3660,8 +3638,6 @@ int add_swap_count_continuation(swp_entry_t entry, gfp_t gfp_mask)
 out:
 	unlock_cluster(ci);
 	spin_unlock(&si->lock);
-	put_swap_device(si);
-outer:
 	if (page)
 		__free_page(page);
 	return ret;
diff --git a/mm/zswap.c b/mm/zswap.c
index 7944e3e57e78..f707a73e35aa 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -902,9 +902,14 @@ static int zswap_get_swap_cache_page(swp_entry_t entry,
 				struct page **retpage)
 {
 	bool page_was_allocated;
+	struct swap_info_struct *si;
 
+	si = get_swap_device(entry);
+	if (!si)
+		return ZSWAP_SWAPCACHE_FAIL;
 	*retpage = __read_swap_cache_async(entry, GFP_KERNEL,
 			NULL, 0, &page_was_allocated);
+	put_swap_device(si);
 	if (page_was_allocated)
 		return ZSWAP_SWAPCACHE_NEW;
 	if (!*retpage)
