The patch titled
Subject: mm, THP, swap: support PMD swap mapping in swap_duplicate()
has been added to the -mm tree. Its filename is
mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Huang Ying <ying.huang@xxxxxxxxx>
Subject: mm, THP, swap: support PMD swap mapping in swap_duplicate()
To support to swapin the THP as a whole, we need to create PMD swap
mapping during swapout, and maintain PMD swap mapping count. This patch
implements the support to increase the PMD swap mapping count (for
swapout, fork, etc.) and set SWAP_HAS_CACHE flag (for swapin, etc.) for a
huge swap cluster in swap_duplicate() function family. Although it only
implements a part of the design of the swap reference count with PMD swap
mapping, the whole design is described as follow to make it easy to
understand the patch and the whole picture.
A huge swap cluster is used to hold the contents of a swapouted THP.
After swapout, a PMD page mapping to the THP will become a PMD swap
mapping to the huge swap cluster via a swap entry in PMD. While a PTE
page mapping to a subpage of the THP will become the PTE swap mapping to a
swap slot in the huge swap cluster via a swap entry in PTE.
If there is no PMD swap mapping and the corresponding THP is removed from
the page cache (reclaimed), the huge swap cluster will be split and become
a normal swap cluster.
The count (cluster_count()) of the huge swap cluster is SWAPFILE_CLUSTER
(= HPAGE_PMD_NR) + PMD swap mapping count. Because all swap slots in the
huge swap cluster are mapped by PTE or PMD, or has SWAP_HAS_CACHE bit set,
the usage count of the swap cluster is HPAGE_PMD_NR. And the PMD swap
mapping count is recorded too to make it easy to determine whether there
are remaining PMD swap mappings.
The count in swap_map[offset] is the sum of PTE and PMD swap mapping
count. This means when we increase the PMD swap mapping count, we need to
increase swap_map[offset] for all swap slots inside the swap cluster. An
alternative choice is to make swap_map[offset] to record PTE swap map
count only, given we have recorded PMD swap mapping count in the count of
the huge swap cluster. But this need to increase swap_map[offset] when
splitting the PMD swap mapping, that may fail because of memory allocation
for swap count continuation. That is hard to dealt with. So we choose
current solution.
The PMD swap mapping to a huge swap cluster may be split when unmap a part
of PMD mapping etc. That is easy because only the count of the huge swap
cluster need to be changed. When the last PMD swap mapping is gone and
SWAP_HAS_CACHE is unset, we will split the huge swap cluster (clear the
huge flag). This makes it easy to reason the cluster state.
A huge swap cluster will be split when splitting the THP in swap cache, or
failing to allocate THP during swapin, etc. But when splitting the huge
swap cluster, we will not try to split all PMD swap mappings, because we
haven't enough information available for that sometimes. Later, when the
PMD swap mapping is duplicated or swapin, etc, the PMD swap mapping will
be split and fallback to the PTE operation.
When a THP is added into swap cache, the SWAP_HAS_CACHE flag will be set
in the swap_map[offset] of all swap slots inside the huge swap cluster
backing the THP. This huge swap cluster will not be split unless the THP
is split even if its PMD swap mapping count dropped to 0. Later, when the
THP is removed from swap cache, the SWAP_HAS_CACHE flag will be cleared in
the swap_map[offset] of all swap slots inside the huge swap cluster. And
this huge swap cluster will be split if its PMD swap mapping count is 0.
Link: http://lkml.kernel.org/r/20180622035151.6676-4-ying.huang@xxxxxxxxx
Signed-off-by: "Huang, Ying" <ying.huang@xxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Shaohua Li <shli@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: Zi Yan <zi.yan@xxxxxxxxxxxxxx>
Cc: Daniel Jordan <daniel.m.jordan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
diff -puN include/linux/huge_mm.h~mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate include/linux/huge_mm.h
--- a/include/linux/huge_mm.h~mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate
+++ a/include/linux/huge_mm.h
@@ -79,6 +79,11 @@ extern struct kobj_attribute shmem_enabl
#define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT)
#define HPAGE_PMD_NR (1<<HPAGE_PMD_ORDER)
+static inline bool thp_swap_supported(void)
+{
+ return IS_ENABLED(CONFIG_THP_SWAP);
+}
+
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
#define HPAGE_PMD_SHIFT PMD_SHIFT
#define HPAGE_PMD_SIZE ((1UL) << HPAGE_PMD_SHIFT)
diff -puN include/linux/swap.h~mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate include/linux/swap.h
--- a/include/linux/swap.h~mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate
+++ a/include/linux/swap.h
@@ -451,8 +451,8 @@ extern swp_entry_t get_swap_page_of_type
extern int get_swap_pages(int n, bool cluster, swp_entry_t swp_entries[]);
extern int add_swap_count_continuation(swp_entry_t, gfp_t);
extern void swap_shmem_alloc(swp_entry_t);
-extern int swap_duplicate(swp_entry_t);
-extern int swapcache_prepare(swp_entry_t);
+extern int swap_duplicate(swp_entry_t *entry, bool cluster);
+extern int swapcache_prepare(swp_entry_t entry, bool cluster);
extern void swap_free(swp_entry_t);
extern void swapcache_free_entries(swp_entry_t *entries, int n);
extern int free_swap_and_cache(swp_entry_t);
@@ -510,7 +510,8 @@ static inline void show_swap_cache_info(
}
#define free_swap_and_cache(e) ({(is_migration_entry(e) || is_device_private_entry(e));})
-#define swapcache_prepare(e) ({(is_migration_entry(e) || is_device_private_entry(e));})
+#define swapcache_prepare(e, c) \
+ ({(is_migration_entry(e) || is_device_private_entry(e)); })
static inline int add_swap_count_continuation(swp_entry_t swp, gfp_t gfp_mask)
{
@@ -521,7 +522,7 @@ static inline void swap_shmem_alloc(swp_
{
}
-static inline int swap_duplicate(swp_entry_t swp)
+static inline int swap_duplicate(swp_entry_t *swp, bool cluster)
{
return 0;
}
diff -puN mm/memory.c~mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate mm/memory.c
--- a/mm/memory.c~mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate
+++ a/mm/memory.c
@@ -957,7 +957,7 @@ copy_one_pte(struct mm_struct *dst_mm, s
swp_entry_t entry = pte_to_swp_entry(pte);
if (likely(!non_swap_entry(entry))) {
- if (swap_duplicate(entry) < 0)
+ if (swap_duplicate(&entry, false) < 0)
return entry.val;
/* make sure dst_mm is on swapoff's mmlist. */
diff -puN mm/rmap.c~mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate mm/rmap.c
--- a/mm/rmap.c~mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate
+++ a/mm/rmap.c
@@ -1556,7 +1556,7 @@ static bool try_to_unmap_one(struct page
break;
}
- if (swap_duplicate(entry) < 0) {
+ if (swap_duplicate(&entry, false) < 0) {
set_pte_at(mm, address, pvmw.pte, pteval);
ret = false;
page_vma_mapped_walk_done(&pvmw);
diff -puN mm/swapfile.c~mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate mm/swapfile.c
--- a/mm/swapfile.c~mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate
+++ a/mm/swapfile.c
@@ -49,6 +49,9 @@ static bool swap_count_continued(struct
unsigned char);
static void free_swap_count_continuations(struct swap_info_struct *);
static sector_t map_swap_entry(swp_entry_t, struct block_device**);
+static int add_swap_count_continuation_locked(struct swap_info_struct *si,
+ unsigned long offset,
+ struct page *page);
DEFINE_SPINLOCK(swap_lock);
static unsigned int nr_swapfiles;
@@ -319,6 +322,11 @@ static inline void unlock_cluster_or_swa
spin_unlock(&si->lock);
}
+static inline bool is_cluster_offset(unsigned long offset)
+{
+ return !(offset % SWAPFILE_CLUSTER);
+}
+
static inline bool cluster_list_empty(struct swap_cluster_list *list)
{
return cluster_is_null(&list->head);
@@ -1166,16 +1174,14 @@ unlock_out:
return NULL;
}
-static unsigned char __swap_entry_free(struct swap_info_struct *p,
- swp_entry_t entry, unsigned char usage)
+static unsigned char __swap_entry_free_locked(struct swap_info_struct *p,
+ struct swap_cluster_info *ci,
+ unsigned long offset,
+ unsigned char usage)
{
- struct swap_cluster_info *ci;
- unsigned long offset = swp_offset(entry);
unsigned char count;
unsigned char has_cache;
- ci = lock_cluster_or_swap_info(p, offset);
-
count = p->swap_map[offset];
has_cache = count & SWAP_HAS_CACHE;
@@ -1203,6 +1209,17 @@ static unsigned char __swap_entry_free(s
usage = count | has_cache;
p->swap_map[offset] = usage ? : SWAP_HAS_CACHE;
+ return usage;
+}
+
+static unsigned char __swap_entry_free(struct swap_info_struct *p,
+ swp_entry_t entry, unsigned char usage)
+{
+ struct swap_cluster_info *ci;
+ unsigned long offset = swp_offset(entry);
+
+ ci = lock_cluster_or_swap_info(p, offset);
+ usage = __swap_entry_free_locked(p, ci, offset, usage);
unlock_cluster_or_swap_info(p, ci);
return usage;
@@ -3450,32 +3467,12 @@ void si_swapinfo(struct sysinfo *val)
spin_unlock(&swap_lock);
}
-/*
- * Verify that a swap entry is valid and increment its swap map count.
- *
- * Returns error code in following case.
- * - success -> 0
- * - swp_entry is invalid -> EINVAL
- * - swp_entry is migration entry -> EINVAL
- * - swap-cache reference is requested but there is already one. -> EEXIST
- * - swap-cache reference is requested but the entry is not used. -> ENOENT
- * - swap-mapped reference requested but needs continued swap count. -> ENOMEM
- */
-static int __swap_duplicate(swp_entry_t entry, unsigned char usage)
+static int __swap_duplicate_locked(struct swap_info_struct *p,
+ unsigned long offset, unsigned char usage)
{
- struct swap_info_struct *p;
- struct swap_cluster_info *ci;
- unsigned long offset;
unsigned char count;
unsigned char has_cache;
- int err = -EINVAL;
-
- p = get_swap_device(entry);
- if (!p)
- goto out;
-
- offset = swp_offset(entry);
- ci = lock_cluster_or_swap_info(p, offset);
+ int err = 0;
count = p->swap_map[offset];
@@ -3485,12 +3482,11 @@ static int __swap_duplicate(swp_entry_t
*/
if (unlikely(swap_count(count) == SWAP_MAP_BAD)) {
err = -ENOENT;
- goto unlock_out;
+ goto out;
}
has_cache = count & SWAP_HAS_CACHE;
count &= ~SWAP_HAS_CACHE;
- err = 0;
if (usage == SWAP_HAS_CACHE) {
@@ -3517,11 +3513,39 @@ static int __swap_duplicate(swp_entry_t
p->swap_map[offset] = count | has_cache;
-unlock_out:
+out:
+ return err;
+}
+
+/*
+ * Verify that a swap entry is valid and increment its swap map count.
+ *
+ * Returns error code in following case.
+ * - success -> 0
+ * - swp_entry is invalid -> EINVAL
+ * - swp_entry is migration entry -> EINVAL
+ * - swap-cache reference is requested but there is already one. -> EEXIST
+ * - swap-cache reference is requested but the entry is not used. -> ENOENT
+ * - swap-mapped reference requested but needs continued swap count. -> ENOMEM
+ */
+static int __swap_duplicate(swp_entry_t entry, unsigned char usage)
+{
+ struct swap_info_struct *p;
+ struct swap_cluster_info *ci;
+ unsigned long offset;
+ int err = -EINVAL;
+
+ p = get_swap_device(entry);
+ if (!p)
+ goto out;
+
+ offset = swp_offset(entry);
+ ci = lock_cluster_or_swap_info(p, offset);
+ err = __swap_duplicate_locked(p, offset, usage);
unlock_cluster_or_swap_info(p, ci);
+
+ put_swap_device(p);
out:
- if (p)
- put_swap_device(p);
return err;
}
@@ -3534,6 +3558,81 @@ void swap_shmem_alloc(swp_entry_t entry)
__swap_duplicate(entry, SWAP_MAP_SHMEM);
}
+#ifdef CONFIG_THP_SWAP
+static int __swap_duplicate_cluster(swp_entry_t *entry, unsigned char usage)
+{
+ struct swap_info_struct *si;
+ struct swap_cluster_info *ci;
+ unsigned long offset;
+ unsigned char *map;
+ int i, err = 0;
+
+ si = get_swap_device(*entry);
+ if (!si) {
+ err = -EINVAL;
+ goto out;
+ }
+ offset = swp_offset(*entry);
+ ci = lock_cluster(si, offset);
+ if (cluster_is_free(ci)) {
+ err = -ENOENT;
+ goto unlock;
+ }
+ if (!cluster_is_huge(ci)) {
+ err = -ENOTDIR;
+ goto unlock;
+ }
+ VM_BUG_ON(!is_cluster_offset(offset));
+ VM_BUG_ON(cluster_count(ci) < SWAPFILE_CLUSTER);
+ map = si->swap_map + offset;
+ if (usage == SWAP_HAS_CACHE) {
+ if (map[0] & SWAP_HAS_CACHE) {
+ err = -EEXIST;
+ goto unlock;
+ }
+ for (i = 0; i < SWAPFILE_CLUSTER; i++) {
+ VM_BUG_ON(map[i] & SWAP_HAS_CACHE);
+ map[i] |= SWAP_HAS_CACHE;
+ }
+ } else {
+ for (i = 0; i < SWAPFILE_CLUSTER; i++) {
+retry:
+ err = __swap_duplicate_locked(si, offset + i, usage);
+ if (err == -ENOMEM) {
+ struct page *page;
+
+ page = alloc_page(GFP_ATOMIC | __GFP_HIGHMEM);
+ err = add_swap_count_continuation_locked(
+ si, offset + i, page);
+ if (err) {
+ *entry = swp_entry(si->type, offset+i);
+ goto undup;
+ }
+ goto retry;
+ } else if (err)
+ goto undup;
+ }
+ cluster_set_count(ci, cluster_count(ci) + usage);
+ }
+unlock:
+ unlock_cluster(ci);
+ put_swap_device(si);
+out:
+ return err;
+undup:
+ for (i--; i >= 0; i--)
+ __swap_entry_free_locked(
+ si, ci, offset + i, usage);
+ goto unlock;
+}
+#else
+static inline int __swap_duplicate_cluster(swp_entry_t *entry,
+ unsigned char usage)
+{
+ return 0;
+}
+#endif
+
/*
* Increase reference count of swap entry by 1.
* Returns 0 for success, or -ENOMEM if a swap_count_continuation is required
@@ -3541,12 +3640,15 @@ void swap_shmem_alloc(swp_entry_t entry)
* if __swap_duplicate() fails for another reason (-EINVAL or -ENOENT), which
* might occur if a page table entry has got corrupted.
*/
-int swap_duplicate(swp_entry_t entry)
+int swap_duplicate(swp_entry_t *entry, bool cluster)
{
int err = 0;
- while (!err && __swap_duplicate(entry, 1) == -ENOMEM)
- err = add_swap_count_continuation(entry, GFP_ATOMIC);
+ if (thp_swap_supported() && cluster)
+ return __swap_duplicate_cluster(entry, 1);
+
+ while (!err && __swap_duplicate(*entry, 1) == -ENOMEM)
+ err = add_swap_count_continuation(*entry, GFP_ATOMIC);
return err;
}
@@ -3558,9 +3660,12 @@ int swap_duplicate(swp_entry_t entry)
* -EBUSY means there is a swap cache.
* Note: return code is different from swap_duplicate().
*/
-int swapcache_prepare(swp_entry_t entry)
+int swapcache_prepare(swp_entry_t entry, bool cluster)
{
- return __swap_duplicate(entry, SWAP_HAS_CACHE);
+ if (thp_swap_supported() && cluster)
+ return __swap_duplicate_cluster(&entry, SWAP_HAS_CACHE);
+ else
+ return __swap_duplicate(entry, SWAP_HAS_CACHE);
}
struct swap_info_struct *swp_swap_info(swp_entry_t entry)
@@ -3590,51 +3695,13 @@ pgoff_t __page_file_index(struct page *p
}
EXPORT_SYMBOL_GPL(__page_file_index);
-/*
- * add_swap_count_continuation - called when a swap count is duplicated
- * beyond SWAP_MAP_MAX, it allocates a new page and links that to the entry's
- * page of the original vmalloc'ed swap_map, to hold the continuation count
- * (for that entry and for its neighbouring PAGE_SIZE swap entries). Called
- * again when count is duplicated beyond SWAP_MAP_MAX * SWAP_CONT_MAX, etc.
- *
- * These continuation pages are seldom referenced: the common paths all work
- * on the original swap_map, only referring to a continuation page when the
- * low "digit" of a count is incremented or decremented through SWAP_MAP_MAX.
- *
- * add_swap_count_continuation(, GFP_ATOMIC) can be called while holding
- * page table locks; if it fails, add_swap_count_continuation(, GFP_KERNEL)
- * can be called after dropping locks.
- */
-int add_swap_count_continuation(swp_entry_t entry, gfp_t gfp_mask)
+static int add_swap_count_continuation_locked(struct swap_info_struct *si,
+ unsigned long offset,
+ struct page *page)
{
- struct swap_info_struct *si;
- struct swap_cluster_info *ci;
struct page *head;
- struct page *page;
struct page *list_page;
- pgoff_t offset;
unsigned char count;
- int ret = 0;
-
- /*
- * When debugging, it's easier to use __GFP_ZERO here; but it's better
- * for latency not to zero a page while GFP_ATOMIC and holding locks.
- */
- 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;
- }
- spin_lock(&si->lock);
-
- offset = swp_offset(entry);
-
- ci = lock_cluster(si, offset);
count = si->swap_map[offset] & ~SWAP_HAS_CACHE;
@@ -3644,13 +3711,11 @@ int add_swap_count_continuation(swp_entr
* will race to add swap count continuation: we need to avoid
* over-provisioning.
*/
- goto out;
+ return 0;
}
- if (!page) {
- ret = -ENOMEM;
- goto out;
- }
+ if (!page)
+ return -ENOMEM;
/*
* We are fortunate that although vmalloc_to_page uses pte_offset_map,
@@ -3698,7 +3763,57 @@ int add_swap_count_continuation(swp_entr
page = NULL; /* now it's attached, don't free it */
out_unlock_cont:
spin_unlock(&si->cont_lock);
-out:
+ if (page)
+ __free_page(page);
+ return 0;
+}
+
+/*
+ * add_swap_count_continuation - called when a swap count is duplicated
+ * beyond SWAP_MAP_MAX, it allocates a new page and links that to the entry's
+ * page of the original vmalloc'ed swap_map, to hold the continuation count
+ * (for that entry and for its neighbouring PAGE_SIZE swap entries). Called
+ * again when count is duplicated beyond SWAP_MAP_MAX * SWAP_CONT_MAX, etc.
+ *
+ * These continuation pages are seldom referenced: the common paths all work
+ * on the original swap_map, only referring to a continuation page when the
+ * low "digit" of a count is incremented or decremented through SWAP_MAP_MAX.
+ *
+ * add_swap_count_continuation(, GFP_ATOMIC) can be called while holding
+ * page table locks; if it fails, add_swap_count_continuation(, GFP_KERNEL)
+ * can be called after dropping locks.
+ */
+int add_swap_count_continuation(swp_entry_t entry, gfp_t gfp_mask)
+{
+ struct swap_info_struct *si;
+ struct swap_cluster_info *ci;
+ struct page *page;
+ unsigned long offset;
+ int ret = 0;
+
+ /*
+ * When debugging, it's easier to use __GFP_ZERO here; but it's better
+ * for latency not to zero a page while GFP_ATOMIC and holding locks.
+ */
+ 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;
+ }
+ spin_lock(&si->lock);
+
+ offset = swp_offset(entry);
+
+ ci = lock_cluster(si, offset);
+
+ ret = add_swap_count_continuation_locked(si, offset, page);
+ page = NULL;
+
unlock_cluster(ci);
spin_unlock(&si->lock);
put_swap_device(si);
diff -puN mm/swap_state.c~mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate mm/swap_state.c
--- a/mm/swap_state.c~mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate
+++ a/mm/swap_state.c
@@ -433,7 +433,7 @@ struct page *__read_swap_cache_async(swp
/*
* Swap entry may have been freed since our caller observed it.
*/
- err = swapcache_prepare(entry);
+ err = swapcache_prepare(entry, false);
if (err == -EEXIST) {
radix_tree_preload_end();
/*
_
Patches currently in -mm which might be from ying.huang@xxxxxxxxx are
mm-clear_huge_page-move-order-algorithm-into-a-separate-function.patch
mm-huge-page-copy-target-sub-page-last-when-copy-huge-page.patch
mm-hugetlbfs-rename-address-to-haddr-in-hugetlb_cow.patch
mm-hugetlbfs-pass-fault-address-to-cow-handler.patch
mm-swap-fix-race-between-swapoff-and-some-swap-operations.patch
mm-swap-fix-race-between-swapoff-and-some-swap-operations-v6.patch
mm-fix-race-between-swapoff-and-mincore.patch
mm-thp-swap-enable-pmd-swap-operations-for-config_thp_swap.patch
mm-thp-swap-make-config_thp_swap-depends-on-config_swap.patch
mm-thp-swap-support-pmd-swap-mapping-in-swap_duplicate.patch
mm-thp-swap-support-pmd-swap-mapping-in-swapcache_free_cluster.patch
mm-thp-swap-support-pmd-swap-mapping-in-free_swap_and_cache-swap_free.patch
mm-thp-swap-support-pmd-swap-mapping-when-splitting-huge-pmd.patch
mm-thp-swap-support-pmd-swap-mapping-in-split_swap_cluster.patch
mm-thp-swap-support-to-read-a-huge-swap-cluster-for-swapin-a-thp.patch
mm-thp-swap-swapin-a-thp-as-a-whole.patch
mm-thp-swap-support-to-count-thp-swapin-and-its-fallback.patch
mm-thp-swap-add-sysfs-interface-to-configure-thp-swapin.patch
mm-thp-swap-support-pmd-swap-mapping-in-swapoff.patch
mm-thp-swap-support-pmd-swap-mapping-in-madvise_free.patch
mm-cgroup-thp-swap-support-to-move-swap-account-for-pmd-swap-mapping.patch
mm-thp-swap-support-to-copy-pmd-swap-mapping-when-fork.patch
mm-thp-swap-free-pmd-swap-mapping-when-zap_huge_pmd.patch
mm-thp-swap-support-pmd-swap-mapping-for-madv_willneed.patch
mm-thp-swap-support-pmd-swap-mapping-in-mincore.patch
mm-thp-swap-support-pmd-swap-mapping-in-common-path.patch
mm-thp-swap-create-pmd-swap-mapping-when-unmap-the-thp.patch
mm-thp-avoid-to-split-thp-when-reclaim-madv_free-thp.patch
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