* + mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch added to mm-new branch
@ 2025-05-07 21:25 Andrew Morton
0 siblings, 0 replies; 5+ messages in thread
From: Andrew Morton @ 2025-05-07 21:25 UTC (permalink / raw)
To: mm-commits, vbabka, surenb, richardycc, osalvador, mhocko,
mgorman, kirill.shutemov, jackmanb, hannes, david, baolin.wang,
ziy, akpm
The patch titled
Subject: mm/page_isolation: remove migratetype from move_freepages_block_isolate()
has been added to the -mm mm-new branch. Its filename is
mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
This patch will later appear in the mm-new branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews. Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Zi Yan <ziy@nvidia.com>
Subject: mm/page_isolation: remove migratetype from move_freepages_block_isolate()
Date: Wed, 7 May 2025 17:10:57 -0400
Since migratetype is no longer overwritten during pageblock isolation,
moving pageblocks to and from MIGRATE_ISOLATE no longer needs migratetype.
Add MIGRATETYPE_NO_ISO_MASK to allow read before-isolation migratetype
when a pageblock is isolated. It is used by
move_freepages_block_isolate().
Add pageblock_isolate_and_move_free_pages() and
pageblock_unisolate_and_move_free_pages() to be explicit about the page
isolation operations. Both share the common code in
__move_freepages_block_isolate(), which is renamed from
move_freepages_block_isolate().
Link: https://lkml.kernel.org/r/20250507211059.2211628-3-ziy@nvidia.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shuemov <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Richard Chang <richardycc@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
include/linux/mmzone.h | 4 +-
include/linux/page-isolation.h | 4 +-
mm/page_alloc.c | 49 +++++++++++++++++++++++++------
mm/page_isolation.c | 21 ++++++-------
4 files changed, 55 insertions(+), 23 deletions(-)
--- a/include/linux/mmzone.h~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/include/linux/mmzone.h
@@ -107,8 +107,10 @@ static inline bool migratetype_is_mergea
extern int page_group_by_mobility_disabled;
#ifdef CONFIG_MEMORY_ISOLATION
-#define MIGRATETYPE_MASK ((BIT(PB_migratetype_bits) - 1) | PB_migrate_isolate_bit)
+#define MIGRATETYPE_NO_ISO_MASK (BIT(PB_migratetype_bits) - 1)
+#define MIGRATETYPE_MASK (MIGRATETYPE_NO_ISO_MASK | PB_migrate_isolate_bit)
#else
+#define MIGRATETYPE_NO_ISO_MASK MIGRATETYPE_MASK
#define MIGRATETYPE_MASK (BIT(PB_migratetype_bits) - 1)
#endif
--- a/include/linux/page-isolation.h~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/include/linux/page-isolation.h
@@ -27,8 +27,8 @@ static inline bool is_migrate_isolate(in
void set_pageblock_migratetype(struct page *page, int migratetype);
-bool move_freepages_block_isolate(struct zone *zone, struct page *page,
- int migratetype);
+bool pageblock_isolate_and_move_free_pages(struct zone *zone, struct page *page);
+bool pageblock_unisolate_and_move_free_pages(struct zone *zone, struct page *page);
int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
int migratetype, int flags);
--- a/mm/page_alloc.c~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/mm/page_alloc.c
@@ -1948,11 +1948,17 @@ static unsigned long find_large_buddy(un
return start_pfn;
}
+static inline void toggle_pageblock_isolate(struct page *page, bool isolate)
+{
+ set_pfnblock_flags_mask(page, (isolate << PB_migrate_isolate),
+ page_to_pfn(page), PB_migrate_isolate_bit);
+}
+
/**
- * move_freepages_block_isolate - move free pages in block for page isolation
+ * __move_freepages_block_isolate - move free pages in block for page isolation
* @zone: the zone
* @page: the pageblock page
- * @migratetype: migratetype to set on the pageblock
+ * @isolate: to isolate the given pageblock or unisolate it
*
* This is similar to move_freepages_block(), but handles the special
* case encountered in page isolation, where the block of interest
@@ -1967,10 +1973,15 @@ static unsigned long find_large_buddy(un
*
* Returns %true if pages could be moved, %false otherwise.
*/
-bool move_freepages_block_isolate(struct zone *zone, struct page *page,
- int migratetype)
+static bool __move_freepages_block_isolate(struct zone *zone,
+ struct page *page, bool isolate)
{
unsigned long start_pfn, pfn;
+ int from_mt;
+ int to_mt;
+
+ if (isolate == get_pageblock_isolate(page))
+ return false;
if (!prep_move_freepages_block(zone, page, &start_pfn, NULL, NULL))
return false;
@@ -1987,7 +1998,7 @@ bool move_freepages_block_isolate(struct
del_page_from_free_list(buddy, zone, order,
get_pfnblock_migratetype(buddy, pfn));
- set_pageblock_migratetype(page, migratetype);
+ toggle_pageblock_isolate(page, isolate);
split_large_buddy(zone, buddy, pfn, order, FPI_NONE);
return true;
}
@@ -1998,16 +2009,36 @@ bool move_freepages_block_isolate(struct
del_page_from_free_list(page, zone, order,
get_pfnblock_migratetype(page, pfn));
- set_pageblock_migratetype(page, migratetype);
+ toggle_pageblock_isolate(page, isolate);
split_large_buddy(zone, page, pfn, order, FPI_NONE);
return true;
}
move:
- __move_freepages_block(zone, start_pfn,
- get_pfnblock_migratetype(page, start_pfn),
- migratetype);
+ /* use MIGRATETYPE_NO_ISO_MASK to get the non-isolate migratetype */
+ if (isolate) {
+ from_mt = get_pfnblock_flags_mask(page, page_to_pfn(page),
+ MIGRATETYPE_NO_ISO_MASK);
+ to_mt = MIGRATE_ISOLATE;
+ } else {
+ from_mt = MIGRATE_ISOLATE;
+ to_mt = get_pfnblock_flags_mask(page, page_to_pfn(page),
+ MIGRATETYPE_NO_ISO_MASK);
+ }
+
+ __move_freepages_block(zone, start_pfn, from_mt, to_mt);
return true;
}
+
+bool pageblock_isolate_and_move_free_pages(struct zone *zone, struct page *page)
+{
+ return __move_freepages_block_isolate(zone, page, true);
+}
+
+bool pageblock_unisolate_and_move_free_pages(struct zone *zone, struct page *page)
+{
+ return __move_freepages_block_isolate(zone, page, false);
+}
+
#endif /* CONFIG_MEMORY_ISOLATION */
static void change_pageblock_range(struct page *pageblock_page,
--- a/mm/page_isolation.c~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/mm/page_isolation.c
@@ -188,7 +188,7 @@ static int set_migratetype_isolate(struc
unmovable = has_unmovable_pages(check_unmovable_start, check_unmovable_end,
migratetype, isol_flags);
if (!unmovable) {
- if (!move_freepages_block_isolate(zone, page, MIGRATE_ISOLATE)) {
+ if (!pageblock_isolate_and_move_free_pages(zone, page)) {
spin_unlock_irqrestore(&zone->lock, flags);
return -EBUSY;
}
@@ -209,7 +209,7 @@ static int set_migratetype_isolate(struc
return -EBUSY;
}
-static void unset_migratetype_isolate(struct page *page, int migratetype)
+static void unset_migratetype_isolate(struct page *page)
{
struct zone *zone;
unsigned long flags;
@@ -262,10 +262,10 @@ static void unset_migratetype_isolate(st
* Isolating this block already succeeded, so this
* should not fail on zone boundaries.
*/
- WARN_ON_ONCE(!move_freepages_block_isolate(zone, page, migratetype));
+ WARN_ON_ONCE(!pageblock_unisolate_and_move_free_pages(zone, page));
} else {
- set_pageblock_migratetype(page, migratetype);
- __putback_isolated_page(page, order, migratetype);
+ clear_pageblock_isolate(page);
+ __putback_isolated_page(page, order, get_pageblock_migratetype(page));
}
zone->nr_isolate_pageblock--;
out:
@@ -383,7 +383,7 @@ static int isolate_single_pageblock(unsi
if (PageBuddy(page)) {
int order = buddy_order(page);
- /* move_freepages_block_isolate() handled this */
+ /* pageblock_isolate_and_move_free_pages() handled this */
VM_WARN_ON_ONCE(pfn + (1 << order) > boundary_pfn);
pfn += 1UL << order;
@@ -433,7 +433,7 @@ static int isolate_single_pageblock(unsi
failed:
/* restore the original migratetype */
if (!skip_isolation)
- unset_migratetype_isolate(pfn_to_page(isolate_pageblock), migratetype);
+ unset_migratetype_isolate(pfn_to_page(isolate_pageblock));
return -EBUSY;
}
@@ -504,7 +504,7 @@ int start_isolate_page_range(unsigned lo
ret = isolate_single_pageblock(isolate_end, flags, true,
skip_isolation, migratetype);
if (ret) {
- unset_migratetype_isolate(pfn_to_page(isolate_start), migratetype);
+ unset_migratetype_isolate(pfn_to_page(isolate_start));
return ret;
}
@@ -517,8 +517,7 @@ int start_isolate_page_range(unsigned lo
start_pfn, end_pfn)) {
undo_isolate_page_range(isolate_start, pfn, migratetype);
unset_migratetype_isolate(
- pfn_to_page(isolate_end - pageblock_nr_pages),
- migratetype);
+ pfn_to_page(isolate_end - pageblock_nr_pages));
return -EBUSY;
}
}
@@ -548,7 +547,7 @@ void undo_isolate_page_range(unsigned lo
page = __first_valid_page(pfn, pageblock_nr_pages);
if (!page || !is_migrate_isolate_page(page))
continue;
- unset_migratetype_isolate(page, migratetype);
+ unset_migratetype_isolate(page);
}
}
/*
_
Patches currently in -mm which might be from ziy@nvidia.com are
mm-page_isolation-make-page-isolation-a-standalone-bit.patch
mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
mm-page_isolation-remove-migratetype-from-undo_isolate_page_range.patch
mm-page_isolation-remove-migratetype-parameter-from-more-functions.patch
^ permalink raw reply [flat|nested] 5+ messages in thread
* + mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch added to mm-new branch
@ 2025-05-09 22:17 Andrew Morton
0 siblings, 0 replies; 5+ messages in thread
From: Andrew Morton @ 2025-05-09 22:17 UTC (permalink / raw)
To: mm-commits, vbabka, surenb, richardycc, osalvador, mhocko,
mgorman, kirill.shutemov, jackmanb, hannes, david, baolin.wang,
ziy, akpm
The patch titled
Subject: mm/page_isolation: remove migratetype from move_freepages_block_isolate()
has been added to the -mm mm-new branch. Its filename is
mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
This patch will later appear in the mm-new branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews. Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Zi Yan <ziy@nvidia.com>
Subject: mm/page_isolation: remove migratetype from move_freepages_block_isolate()
Date: Fri, 9 May 2025 16:01:09 -0400
Since migratetype is no longer overwritten during pageblock isolation,
moving pageblocks to and from MIGRATE_ISOLATE no longer needs migratetype.
Add MIGRATETYPE_NO_ISO_MASK to allow read before-isolation migratetype
when a pageblock is isolated. It is used by
move_freepages_block_isolate().
Add pageblock_isolate_and_move_free_pages() and
pageblock_unisolate_and_move_free_pages() to be explicit about the page
isolation operations. Both share the common code in
__move_freepages_block_isolate(), which is renamed from
move_freepages_block_isolate().
Make set_pageblock_migratetype() only accept non MIGRATE_ISOLATE types,
so that one should use set_pageblock_isolate() to isolate pageblocks.
Two consequential changes:
1. move pageblock migratetype code out of __move_freepages_block().
2. in online_pages() from mm/memory_hotplug.c, move_pfn_range_to_zone() is
called with MIGRATE_MOVABLE instead of MIGRATE_ISOLATE and all affected
pageblocks are isolated afterwards. Otherwise, all online pageblocks
will have non-determined migratetype.
Link: https://lkml.kernel.org/r/20250509200111.3372279-3-ziy@nvidia.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shuemov <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Richard Chang <richardycc@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
include/linux/mmzone.h | 4 +
include/linux/page-isolation.h | 5 +-
mm/memory_hotplug.c | 7 ++
mm/page_alloc.c | 73 ++++++++++++++++++++++---------
mm/page_isolation.c | 27 ++++++-----
5 files changed, 82 insertions(+), 34 deletions(-)
--- a/include/linux/mmzone.h~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/include/linux/mmzone.h
@@ -107,8 +107,10 @@ static inline bool migratetype_is_mergea
extern int page_group_by_mobility_disabled;
#ifdef CONFIG_MEMORY_ISOLATION
-#define MIGRATETYPE_MASK ((BIT(PB_migratetype_bits) - 1) | PB_migrate_isolate_bit)
+#define MIGRATETYPE_NO_ISO_MASK (BIT(PB_migratetype_bits) - 1)
+#define MIGRATETYPE_MASK (MIGRATETYPE_NO_ISO_MASK | PB_migrate_isolate_bit)
#else
+#define MIGRATETYPE_NO_ISO_MASK MIGRATETYPE_MASK
#define MIGRATETYPE_MASK (BIT(PB_migratetype_bits) - 1)
#endif
--- a/include/linux/page-isolation.h~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/include/linux/page-isolation.h
@@ -26,9 +26,10 @@ static inline bool is_migrate_isolate(in
#define REPORT_FAILURE 0x2
void set_pageblock_migratetype(struct page *page, int migratetype);
+void set_pageblock_isolate(struct page *page);
-bool move_freepages_block_isolate(struct zone *zone, struct page *page,
- int migratetype);
+bool pageblock_isolate_and_move_free_pages(struct zone *zone, struct page *page);
+bool pageblock_unisolate_and_move_free_pages(struct zone *zone, struct page *page);
int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
int migratetype, int flags);
--- a/mm/memory_hotplug.c~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/mm/memory_hotplug.c
@@ -1178,6 +1178,7 @@ int online_pages(unsigned long pfn, unsi
const int nid = zone_to_nid(zone);
int ret;
struct memory_notify arg;
+ unsigned long isol_pfn;
/*
* {on,off}lining is constrained to full memory sections (or more
@@ -1192,7 +1193,11 @@ int online_pages(unsigned long pfn, unsi
/* associate pfn range with the zone */
- move_pfn_range_to_zone(zone, pfn, nr_pages, NULL, MIGRATE_ISOLATE);
+ move_pfn_range_to_zone(zone, pfn, nr_pages, NULL, MIGRATE_MOVABLE);
+ for (isol_pfn = pfn;
+ isol_pfn < pfn + nr_pages;
+ isol_pfn += pageblock_nr_pages)
+ set_pageblock_isolate(pfn_to_page(isol_pfn));
arg.start_pfn = pfn;
arg.nr_pages = nr_pages;
--- a/mm/page_alloc.c~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/mm/page_alloc.c
@@ -454,11 +454,9 @@ void set_pageblock_migratetype(struct pa
migratetype = MIGRATE_UNMOVABLE;
#ifdef CONFIG_MEMORY_ISOLATION
- if (migratetype == MIGRATE_ISOLATE) {
- set_pfnblock_flags_mask(page, PB_migrate_isolate_bit,
- page_to_pfn(page), PB_migrate_isolate_bit);
- return;
- }
+ VM_WARN(migratetype == MIGRATE_ISOLATE,
+ "Use set_pageblock_isolate() for pageblock isolation");
+ return;
#endif
set_pfnblock_flags_mask(page, (unsigned long)migratetype,
page_to_pfn(page), MIGRATETYPE_MASK);
@@ -1819,8 +1817,8 @@ static inline struct page *__rmqueue_cma
#endif
/*
- * Change the type of a block and move all its free pages to that
- * type's freelist.
+ * Move all free pages of a block to new type's freelist. Caller needs to
+ * change the block type.
*/
static int __move_freepages_block(struct zone *zone, unsigned long start_pfn,
int old_mt, int new_mt)
@@ -1852,8 +1850,6 @@ static int __move_freepages_block(struct
pages_moved += 1 << order;
}
- set_pageblock_migratetype(pfn_to_page(start_pfn), new_mt);
-
return pages_moved;
}
@@ -1911,11 +1907,16 @@ static int move_freepages_block(struct z
int old_mt, int new_mt)
{
unsigned long start_pfn;
+ int res;
if (!prep_move_freepages_block(zone, page, &start_pfn, NULL, NULL))
return -1;
- return __move_freepages_block(zone, start_pfn, old_mt, new_mt);
+ res = __move_freepages_block(zone, start_pfn, old_mt, new_mt);
+ set_pageblock_migratetype(pfn_to_page(start_pfn), new_mt);
+
+ return res;
+
}
#ifdef CONFIG_MEMORY_ISOLATION
@@ -1943,11 +1944,17 @@ static unsigned long find_large_buddy(un
return start_pfn;
}
+static inline void toggle_pageblock_isolate(struct page *page, bool isolate)
+{
+ set_pfnblock_flags_mask(page, (isolate << PB_migrate_isolate),
+ page_to_pfn(page), PB_migrate_isolate_bit);
+}
+
/**
- * move_freepages_block_isolate - move free pages in block for page isolation
+ * __move_freepages_block_isolate - move free pages in block for page isolation
* @zone: the zone
* @page: the pageblock page
- * @migratetype: migratetype to set on the pageblock
+ * @isolate: to isolate the given pageblock or unisolate it
*
* This is similar to move_freepages_block(), but handles the special
* case encountered in page isolation, where the block of interest
@@ -1962,10 +1969,15 @@ static unsigned long find_large_buddy(un
*
* Returns %true if pages could be moved, %false otherwise.
*/
-bool move_freepages_block_isolate(struct zone *zone, struct page *page,
- int migratetype)
+static bool __move_freepages_block_isolate(struct zone *zone,
+ struct page *page, bool isolate)
{
unsigned long start_pfn, pfn;
+ int from_mt;
+ int to_mt;
+
+ if (isolate == (get_pageblock_migratetype(page) == MIGRATE_ISOLATE))
+ return false;
if (!prep_move_freepages_block(zone, page, &start_pfn, NULL, NULL))
return false;
@@ -1982,7 +1994,7 @@ bool move_freepages_block_isolate(struct
del_page_from_free_list(buddy, zone, order,
get_pfnblock_migratetype(buddy, pfn));
- set_pageblock_migratetype(page, migratetype);
+ toggle_pageblock_isolate(page, isolate);
split_large_buddy(zone, buddy, pfn, order, FPI_NONE);
return true;
}
@@ -1993,16 +2005,38 @@ bool move_freepages_block_isolate(struct
del_page_from_free_list(page, zone, order,
get_pfnblock_migratetype(page, pfn));
- set_pageblock_migratetype(page, migratetype);
+ toggle_pageblock_isolate(page, isolate);
split_large_buddy(zone, page, pfn, order, FPI_NONE);
return true;
}
move:
- __move_freepages_block(zone, start_pfn,
- get_pfnblock_migratetype(page, start_pfn),
- migratetype);
+ /* use MIGRATETYPE_NO_ISO_MASK to get the non-isolate migratetype */
+ if (isolate) {
+ from_mt = get_pfnblock_flags_mask(page, page_to_pfn(page),
+ MIGRATETYPE_NO_ISO_MASK);
+ to_mt = MIGRATE_ISOLATE;
+ } else {
+ from_mt = MIGRATE_ISOLATE;
+ to_mt = get_pfnblock_flags_mask(page, page_to_pfn(page),
+ MIGRATETYPE_NO_ISO_MASK);
+ }
+
+ __move_freepages_block(zone, start_pfn, from_mt, to_mt);
+ toggle_pageblock_isolate(pfn_to_page(start_pfn), isolate);
+
return true;
}
+
+bool pageblock_isolate_and_move_free_pages(struct zone *zone, struct page *page)
+{
+ return __move_freepages_block_isolate(zone, page, true);
+}
+
+bool pageblock_unisolate_and_move_free_pages(struct zone *zone, struct page *page)
+{
+ return __move_freepages_block_isolate(zone, page, false);
+}
+
#endif /* CONFIG_MEMORY_ISOLATION */
static void change_pageblock_range(struct page *pageblock_page,
@@ -2194,6 +2228,7 @@ try_to_claim_block(struct zone *zone, st
if (free_pages + alike_pages >= (1 << (pageblock_order-1)) ||
page_group_by_mobility_disabled) {
__move_freepages_block(zone, start_pfn, block_type, start_type);
+ set_pageblock_migratetype(pfn_to_page(start_pfn), start_type);
return __rmqueue_smallest(zone, order, start_type);
}
--- a/mm/page_isolation.c~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/mm/page_isolation.c
@@ -25,6 +25,12 @@ static inline void clear_pageblock_isola
set_pfnblock_flags_mask(page, 0, page_to_pfn(page),
PB_migrate_isolate_bit);
}
+void set_pageblock_isolate(struct page *page)
+{
+ set_pfnblock_flags_mask(page, PB_migrate_isolate_bit,
+ page_to_pfn(page),
+ PB_migrate_isolate_bit);
+}
/*
* This function checks whether the range [start_pfn, end_pfn) includes
@@ -199,7 +205,7 @@ static int set_migratetype_isolate(struc
unmovable = has_unmovable_pages(check_unmovable_start, check_unmovable_end,
migratetype, isol_flags);
if (!unmovable) {
- if (!move_freepages_block_isolate(zone, page, MIGRATE_ISOLATE)) {
+ if (!pageblock_isolate_and_move_free_pages(zone, page)) {
spin_unlock_irqrestore(&zone->lock, flags);
return -EBUSY;
}
@@ -220,7 +226,7 @@ static int set_migratetype_isolate(struc
return -EBUSY;
}
-static void unset_migratetype_isolate(struct page *page, int migratetype)
+static void unset_migratetype_isolate(struct page *page)
{
struct zone *zone;
unsigned long flags;
@@ -273,10 +279,10 @@ static void unset_migratetype_isolate(st
* Isolating this block already succeeded, so this
* should not fail on zone boundaries.
*/
- WARN_ON_ONCE(!move_freepages_block_isolate(zone, page, migratetype));
+ WARN_ON_ONCE(!pageblock_unisolate_and_move_free_pages(zone, page));
} else {
- set_pageblock_migratetype(page, migratetype);
- __putback_isolated_page(page, order, migratetype);
+ clear_pageblock_isolate(page);
+ __putback_isolated_page(page, order, get_pageblock_migratetype(page));
}
zone->nr_isolate_pageblock--;
out:
@@ -394,7 +400,7 @@ static int isolate_single_pageblock(unsi
if (PageBuddy(page)) {
int order = buddy_order(page);
- /* move_freepages_block_isolate() handled this */
+ /* pageblock_isolate_and_move_free_pages() handled this */
VM_WARN_ON_ONCE(pfn + (1 << order) > boundary_pfn);
pfn += 1UL << order;
@@ -444,7 +450,7 @@ static int isolate_single_pageblock(unsi
failed:
/* restore the original migratetype */
if (!skip_isolation)
- unset_migratetype_isolate(pfn_to_page(isolate_pageblock), migratetype);
+ unset_migratetype_isolate(pfn_to_page(isolate_pageblock));
return -EBUSY;
}
@@ -515,7 +521,7 @@ int start_isolate_page_range(unsigned lo
ret = isolate_single_pageblock(isolate_end, flags, true,
skip_isolation, migratetype);
if (ret) {
- unset_migratetype_isolate(pfn_to_page(isolate_start), migratetype);
+ unset_migratetype_isolate(pfn_to_page(isolate_start));
return ret;
}
@@ -528,8 +534,7 @@ int start_isolate_page_range(unsigned lo
start_pfn, end_pfn)) {
undo_isolate_page_range(isolate_start, pfn, migratetype);
unset_migratetype_isolate(
- pfn_to_page(isolate_end - pageblock_nr_pages),
- migratetype);
+ pfn_to_page(isolate_end - pageblock_nr_pages));
return -EBUSY;
}
}
@@ -559,7 +564,7 @@ void undo_isolate_page_range(unsigned lo
page = __first_valid_page(pfn, pageblock_nr_pages);
if (!page || !is_migrate_isolate_page(page))
continue;
- unset_migratetype_isolate(page, migratetype);
+ unset_migratetype_isolate(page);
}
}
/*
_
Patches currently in -mm which might be from ziy@nvidia.com are
mm-page_isolation-make-page-isolation-a-standalone-bit.patch
mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
mm-page_isolation-remove-migratetype-from-undo_isolate_page_range.patch
mm-page_isolation-remove-migratetype-parameter-from-more-functions.patch
^ permalink raw reply [flat|nested] 5+ messages in thread
* + mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch added to mm-new branch
@ 2025-06-03 2:08 Andrew Morton
0 siblings, 0 replies; 5+ messages in thread
From: Andrew Morton @ 2025-06-03 2:08 UTC (permalink / raw)
To: mm-commits, vbabka, surenb, richardycc, osalvador, mhocko,
mgorman, kirill.shutemov, jackmanb, hannes, david, baolin.wang,
ziy, akpm
The patch titled
Subject: mm/page_isolation: remove migratetype from move_freepages_block_isolate()
has been added to the -mm mm-new branch. Its filename is
mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
This patch will later appear in the mm-new branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews. Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Zi Yan <ziy@nvidia.com>
Subject: mm/page_isolation: remove migratetype from move_freepages_block_isolate()
Date: Mon, 2 Jun 2025 19:52:45 -0400
Since migratetype is no longer overwritten during pageblock isolation,
moving a pageblock out of MIGRATE_ISOLATE no longer needs a new
migratetype.
Add pageblock_isolate_and_move_free_pages() and
pageblock_unisolate_and_move_free_pages() to be explicit about the page
isolation operations. Both share the common code in
__move_freepages_block_isolate(), which is renamed from
move_freepages_block_isolate().
Add toggle_pageblock_isolate() to flip pageblock isolation bit in
__move_freepages_block_isolate().
Make set_pageblock_migratetype() only accept non MIGRATE_ISOLATE types, so
that one should use set_pageblock_isolate() to isolate pageblocks. As a
result, move pageblock migratetype code out of __move_freepages_block().
Link: https://lkml.kernel.org/r/20250602235247.1219983-5-ziy@nvidia.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shuemov <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Richard Chang <richardycc@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
include/linux/page-isolation.h | 5 -
mm/page_alloc.c | 80 ++++++++++++++++++++++++-------
mm/page_isolation.c | 21 +++-----
3 files changed, 75 insertions(+), 31 deletions(-)
--- a/include/linux/page-isolation.h~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/include/linux/page-isolation.h
@@ -44,10 +44,9 @@ static inline void set_pageblock_isolate
void __meminit init_pageblock_migratetype(struct page *page,
enum migratetype migratetype,
bool isolate);
-void set_pageblock_migratetype(struct page *page, enum migratetype migratetype);
-bool move_freepages_block_isolate(struct zone *zone, struct page *page,
- int migratetype);
+bool pageblock_isolate_and_move_free_pages(struct zone *zone, struct page *page);
+bool pageblock_unisolate_and_move_free_pages(struct zone *zone, struct page *page);
int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
int migratetype, int flags);
--- a/mm/page_alloc.c~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/mm/page_alloc.c
@@ -525,8 +525,8 @@ void clear_pfnblock_bit(const struct pag
* @page: The page within the block of interest
* @migratetype: migratetype to set
*/
-__always_inline void set_pageblock_migratetype(struct page *page,
- enum migratetype migratetype)
+static void set_pageblock_migratetype(struct page *page,
+ enum migratetype migratetype)
{
if (unlikely(page_group_by_mobility_disabled &&
migratetype < MIGRATE_PCPTYPES))
@@ -534,9 +534,13 @@ __always_inline void set_pageblock_migra
#ifdef CONFIG_MEMORY_ISOLATION
if (migratetype == MIGRATE_ISOLATE) {
- set_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate);
+ VM_WARN_ONCE(1,
+ "Use set_pageblock_isolate() for pageblock isolation");
return;
}
+ VM_WARN_ONCE(get_pfnblock_bit(page, page_to_pfn(page),
+ PB_migrate_isolate),
+ "Use clear_pageblock_isolate() to unisolate pageblock");
/* MIGRATETYPE_AND_ISO_MASK clears PB_migrate_isolate if it is set */
#endif
__set_pfnblock_flags_mask(page, page_to_pfn(page),
@@ -1921,8 +1925,8 @@ static inline struct page *__rmqueue_cma
#endif
/*
- * Change the type of a block and move all its free pages to that
- * type's freelist.
+ * Move all free pages of a block to new type's freelist. Caller needs to
+ * change the block type.
*/
static int __move_freepages_block(struct zone *zone, unsigned long start_pfn,
int old_mt, int new_mt)
@@ -1954,8 +1958,6 @@ static int __move_freepages_block(struct
pages_moved += 1 << order;
}
- set_pageblock_migratetype(pfn_to_page(start_pfn), new_mt);
-
return pages_moved;
}
@@ -2013,11 +2015,16 @@ static int move_freepages_block(struct z
int old_mt, int new_mt)
{
unsigned long start_pfn;
+ int res;
if (!prep_move_freepages_block(zone, page, &start_pfn, NULL, NULL))
return -1;
- return __move_freepages_block(zone, start_pfn, old_mt, new_mt);
+ res = __move_freepages_block(zone, start_pfn, old_mt, new_mt);
+ set_pageblock_migratetype(pfn_to_page(start_pfn), new_mt);
+
+ return res;
+
}
#ifdef CONFIG_MEMORY_ISOLATION
@@ -2045,11 +2052,19 @@ static unsigned long find_large_buddy(un
return start_pfn;
}
+static inline void toggle_pageblock_isolate(struct page *page, bool isolate)
+{
+ if (isolate)
+ set_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate);
+ else
+ clear_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate);
+}
+
/**
- * move_freepages_block_isolate - move free pages in block for page isolation
+ * __move_freepages_block_isolate - move free pages in block for page isolation
* @zone: the zone
* @page: the pageblock page
- * @migratetype: migratetype to set on the pageblock
+ * @isolate: to isolate the given pageblock or unisolate it
*
* This is similar to move_freepages_block(), but handles the special
* case encountered in page isolation, where the block of interest
@@ -2064,10 +2079,18 @@ static unsigned long find_large_buddy(un
*
* Returns %true if pages could be moved, %false otherwise.
*/
-bool move_freepages_block_isolate(struct zone *zone, struct page *page,
- int migratetype)
+static bool __move_freepages_block_isolate(struct zone *zone,
+ struct page *page, bool isolate)
{
unsigned long start_pfn, pfn;
+ int from_mt;
+ int to_mt;
+
+ if (isolate == get_pageblock_isolate(page)) {
+ VM_WARN_ONCE(1, "%s a pageblock that is already in that state",
+ isolate ? "Isolate" : "Unisolate");
+ return false;
+ }
if (!prep_move_freepages_block(zone, page, &start_pfn, NULL, NULL))
return false;
@@ -2084,7 +2107,7 @@ bool move_freepages_block_isolate(struct
del_page_from_free_list(buddy, zone, order,
get_pfnblock_migratetype(buddy, pfn));
- set_pageblock_migratetype(page, migratetype);
+ toggle_pageblock_isolate(page, isolate);
split_large_buddy(zone, buddy, pfn, order, FPI_NONE);
return true;
}
@@ -2095,16 +2118,38 @@ bool move_freepages_block_isolate(struct
del_page_from_free_list(page, zone, order,
get_pfnblock_migratetype(page, pfn));
- set_pageblock_migratetype(page, migratetype);
+ toggle_pageblock_isolate(page, isolate);
split_large_buddy(zone, page, pfn, order, FPI_NONE);
return true;
}
move:
- __move_freepages_block(zone, start_pfn,
- get_pfnblock_migratetype(page, start_pfn),
- migratetype);
+ /* Use MIGRATETYPE_MASK to get non-isolate migratetype */
+ if (isolate) {
+ from_mt = __get_pfnblock_flags_mask(page, page_to_pfn(page),
+ MIGRATETYPE_MASK);
+ to_mt = MIGRATE_ISOLATE;
+ } else {
+ from_mt = MIGRATE_ISOLATE;
+ to_mt = __get_pfnblock_flags_mask(page, page_to_pfn(page),
+ MIGRATETYPE_MASK);
+ }
+
+ __move_freepages_block(zone, start_pfn, from_mt, to_mt);
+ toggle_pageblock_isolate(pfn_to_page(start_pfn), isolate);
+
return true;
}
+
+bool pageblock_isolate_and_move_free_pages(struct zone *zone, struct page *page)
+{
+ return __move_freepages_block_isolate(zone, page, true);
+}
+
+bool pageblock_unisolate_and_move_free_pages(struct zone *zone, struct page *page)
+{
+ return __move_freepages_block_isolate(zone, page, false);
+}
+
#endif /* CONFIG_MEMORY_ISOLATION */
static void change_pageblock_range(struct page *pageblock_page,
@@ -2296,6 +2341,7 @@ try_to_claim_block(struct zone *zone, st
if (free_pages + alike_pages >= (1 << (pageblock_order-1)) ||
page_group_by_mobility_disabled) {
__move_freepages_block(zone, start_pfn, block_type, start_type);
+ set_pageblock_migratetype(pfn_to_page(start_pfn), start_type);
return __rmqueue_smallest(zone, order, start_type);
}
--- a/mm/page_isolation.c~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/mm/page_isolation.c
@@ -188,7 +188,7 @@ static int set_migratetype_isolate(struc
unmovable = has_unmovable_pages(check_unmovable_start, check_unmovable_end,
migratetype, isol_flags);
if (!unmovable) {
- if (!move_freepages_block_isolate(zone, page, MIGRATE_ISOLATE)) {
+ if (!pageblock_isolate_and_move_free_pages(zone, page)) {
spin_unlock_irqrestore(&zone->lock, flags);
return -EBUSY;
}
@@ -209,7 +209,7 @@ static int set_migratetype_isolate(struc
return -EBUSY;
}
-static void unset_migratetype_isolate(struct page *page, int migratetype)
+static void unset_migratetype_isolate(struct page *page)
{
struct zone *zone;
unsigned long flags;
@@ -262,10 +262,10 @@ static void unset_migratetype_isolate(st
* Isolating this block already succeeded, so this
* should not fail on zone boundaries.
*/
- WARN_ON_ONCE(!move_freepages_block_isolate(zone, page, migratetype));
+ WARN_ON_ONCE(!pageblock_unisolate_and_move_free_pages(zone, page));
} else {
- set_pageblock_migratetype(page, migratetype);
- __putback_isolated_page(page, order, migratetype);
+ clear_pageblock_isolate(page);
+ __putback_isolated_page(page, order, get_pageblock_migratetype(page));
}
zone->nr_isolate_pageblock--;
out:
@@ -383,7 +383,7 @@ static int isolate_single_pageblock(unsi
if (PageBuddy(page)) {
int order = buddy_order(page);
- /* move_freepages_block_isolate() handled this */
+ /* pageblock_isolate_and_move_free_pages() handled this */
VM_WARN_ON_ONCE(pfn + (1 << order) > boundary_pfn);
pfn += 1UL << order;
@@ -433,7 +433,7 @@ static int isolate_single_pageblock(unsi
failed:
/* restore the original migratetype */
if (!skip_isolation)
- unset_migratetype_isolate(pfn_to_page(isolate_pageblock), migratetype);
+ unset_migratetype_isolate(pfn_to_page(isolate_pageblock));
return -EBUSY;
}
@@ -504,7 +504,7 @@ int start_isolate_page_range(unsigned lo
ret = isolate_single_pageblock(isolate_end, flags, true,
skip_isolation, migratetype);
if (ret) {
- unset_migratetype_isolate(pfn_to_page(isolate_start), migratetype);
+ unset_migratetype_isolate(pfn_to_page(isolate_start));
return ret;
}
@@ -517,8 +517,7 @@ int start_isolate_page_range(unsigned lo
start_pfn, end_pfn)) {
undo_isolate_page_range(isolate_start, pfn, migratetype);
unset_migratetype_isolate(
- pfn_to_page(isolate_end - pageblock_nr_pages),
- migratetype);
+ pfn_to_page(isolate_end - pageblock_nr_pages));
return -EBUSY;
}
}
@@ -548,7 +547,7 @@ void undo_isolate_page_range(unsigned lo
page = __first_valid_page(pfn, pageblock_nr_pages);
if (!page || !is_migrate_isolate_page(page))
continue;
- unset_migratetype_isolate(page, migratetype);
+ unset_migratetype_isolate(page);
}
}
/*
_
Patches currently in -mm which might be from ziy@nvidia.com are
mm-page_alloc-pageblock-flags-functions-clean-up.patch
mm-page_isolation-make-page-isolation-a-standalone-bit.patch
mm-page_alloc-add-support-for-initializing-pageblock-as-isolated.patch
mm-page_alloc-add-support-for-initializing-pageblock-as-isolated-fix.patch
mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
mm-page_isolation-remove-migratetype-from-undo_isolate_page_range.patch
mm-page_isolation-remove-migratetype-parameter-from-more-functions.patch
^ permalink raw reply [flat|nested] 5+ messages in thread
* + mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch added to mm-new branch
@ 2025-06-16 23:57 Andrew Morton
0 siblings, 0 replies; 5+ messages in thread
From: Andrew Morton @ 2025-06-16 23:57 UTC (permalink / raw)
To: mm-commits, vbabka, surenb, richardycc, osalvador, mhocko,
mgorman, kirill.shutemov, jackmanb, hannes, david, baolin.wang,
ziy, akpm
The patch titled
Subject: mm/page_isolation: remove migratetype from move_freepages_block_isolate()
has been added to the -mm mm-new branch. Its filename is
mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
This patch will later appear in the mm-new branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews. Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Zi Yan <ziy@nvidia.com>
Subject: mm/page_isolation: remove migratetype from move_freepages_block_isolate()
Date: Mon, 16 Jun 2025 08:10:17 -0400
Since migratetype is no longer overwritten during pageblock isolation,
moving a pageblock out of MIGRATE_ISOLATE no longer needs a new
migratetype.
Add pageblock_isolate_and_move_free_pages() and
pageblock_unisolate_and_move_free_pages() to be explicit about the page
isolation operations. Both share the common code in
__move_freepages_block_isolate(), which is renamed from
move_freepages_block_isolate().
Add toggle_pageblock_isolate() to flip pageblock isolation bit in
__move_freepages_block_isolate().
Make set_pageblock_migratetype() only accept non MIGRATE_ISOLATE types, so
that one should use set_pageblock_isolate() to isolate pageblocks. As a
result, move pageblock migratetype code out of __move_freepages_block().
Link: https://lkml.kernel.org/r/20250616121019.1925851-5-ziy@nvidia.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shuemov <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Richard Chang <richardycc@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
include/linux/page-isolation.h | 5 -
mm/page_alloc.c | 80 ++++++++++++++++++++++++-------
mm/page_isolation.c | 21 +++-----
3 files changed, 75 insertions(+), 31 deletions(-)
--- a/include/linux/page-isolation.h~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/include/linux/page-isolation.h
@@ -44,10 +44,9 @@ static inline void set_pageblock_isolate
void __meminit init_pageblock_migratetype(struct page *page,
enum migratetype migratetype,
bool isolate);
-void set_pageblock_migratetype(struct page *page, enum migratetype migratetype);
-bool move_freepages_block_isolate(struct zone *zone, struct page *page,
- int migratetype);
+bool pageblock_isolate_and_move_free_pages(struct zone *zone, struct page *page);
+bool pageblock_unisolate_and_move_free_pages(struct zone *zone, struct page *page);
int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
int migratetype, int flags);
--- a/mm/page_alloc.c~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/mm/page_alloc.c
@@ -525,8 +525,8 @@ void clear_pfnblock_bit(const struct pag
* @page: The page within the block of interest
* @migratetype: migratetype to set
*/
-__always_inline void set_pageblock_migratetype(struct page *page,
- enum migratetype migratetype)
+static void set_pageblock_migratetype(struct page *page,
+ enum migratetype migratetype)
{
if (unlikely(page_group_by_mobility_disabled &&
migratetype < MIGRATE_PCPTYPES))
@@ -534,9 +534,13 @@ __always_inline void set_pageblock_migra
#ifdef CONFIG_MEMORY_ISOLATION
if (migratetype == MIGRATE_ISOLATE) {
- set_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate);
+ VM_WARN_ONCE(1,
+ "Use set_pageblock_isolate() for pageblock isolation");
return;
}
+ VM_WARN_ONCE(get_pfnblock_bit(page, page_to_pfn(page),
+ PB_migrate_isolate),
+ "Use clear_pageblock_isolate() to unisolate pageblock");
/* MIGRATETYPE_AND_ISO_MASK clears PB_migrate_isolate if it is set */
#endif
__set_pfnblock_flags_mask(page, page_to_pfn(page),
@@ -1921,8 +1925,8 @@ static inline struct page *__rmqueue_cma
#endif
/*
- * Change the type of a block and move all its free pages to that
- * type's freelist.
+ * Move all free pages of a block to new type's freelist. Caller needs to
+ * change the block type.
*/
static int __move_freepages_block(struct zone *zone, unsigned long start_pfn,
int old_mt, int new_mt)
@@ -1954,8 +1958,6 @@ static int __move_freepages_block(struct
pages_moved += 1 << order;
}
- set_pageblock_migratetype(pfn_to_page(start_pfn), new_mt);
-
return pages_moved;
}
@@ -2013,11 +2015,16 @@ static int move_freepages_block(struct z
int old_mt, int new_mt)
{
unsigned long start_pfn;
+ int res;
if (!prep_move_freepages_block(zone, page, &start_pfn, NULL, NULL))
return -1;
- return __move_freepages_block(zone, start_pfn, old_mt, new_mt);
+ res = __move_freepages_block(zone, start_pfn, old_mt, new_mt);
+ set_pageblock_migratetype(pfn_to_page(start_pfn), new_mt);
+
+ return res;
+
}
#ifdef CONFIG_MEMORY_ISOLATION
@@ -2045,11 +2052,19 @@ static unsigned long find_large_buddy(un
return start_pfn;
}
+static inline void toggle_pageblock_isolate(struct page *page, bool isolate)
+{
+ if (isolate)
+ set_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate);
+ else
+ clear_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate);
+}
+
/**
- * move_freepages_block_isolate - move free pages in block for page isolation
+ * __move_freepages_block_isolate - move free pages in block for page isolation
* @zone: the zone
* @page: the pageblock page
- * @migratetype: migratetype to set on the pageblock
+ * @isolate: to isolate the given pageblock or unisolate it
*
* This is similar to move_freepages_block(), but handles the special
* case encountered in page isolation, where the block of interest
@@ -2064,10 +2079,18 @@ static unsigned long find_large_buddy(un
*
* Returns %true if pages could be moved, %false otherwise.
*/
-bool move_freepages_block_isolate(struct zone *zone, struct page *page,
- int migratetype)
+static bool __move_freepages_block_isolate(struct zone *zone,
+ struct page *page, bool isolate)
{
unsigned long start_pfn, pfn;
+ int from_mt;
+ int to_mt;
+
+ if (isolate == get_pageblock_isolate(page)) {
+ VM_WARN_ONCE(1, "%s a pageblock that is already in that state",
+ isolate ? "Isolate" : "Unisolate");
+ return false;
+ }
if (!prep_move_freepages_block(zone, page, &start_pfn, NULL, NULL))
return false;
@@ -2084,7 +2107,7 @@ bool move_freepages_block_isolate(struct
del_page_from_free_list(buddy, zone, order,
get_pfnblock_migratetype(buddy, pfn));
- set_pageblock_migratetype(page, migratetype);
+ toggle_pageblock_isolate(page, isolate);
split_large_buddy(zone, buddy, pfn, order, FPI_NONE);
return true;
}
@@ -2095,16 +2118,38 @@ bool move_freepages_block_isolate(struct
del_page_from_free_list(page, zone, order,
get_pfnblock_migratetype(page, pfn));
- set_pageblock_migratetype(page, migratetype);
+ toggle_pageblock_isolate(page, isolate);
split_large_buddy(zone, page, pfn, order, FPI_NONE);
return true;
}
move:
- __move_freepages_block(zone, start_pfn,
- get_pfnblock_migratetype(page, start_pfn),
- migratetype);
+ /* Use MIGRATETYPE_MASK to get non-isolate migratetype */
+ if (isolate) {
+ from_mt = __get_pfnblock_flags_mask(page, page_to_pfn(page),
+ MIGRATETYPE_MASK);
+ to_mt = MIGRATE_ISOLATE;
+ } else {
+ from_mt = MIGRATE_ISOLATE;
+ to_mt = __get_pfnblock_flags_mask(page, page_to_pfn(page),
+ MIGRATETYPE_MASK);
+ }
+
+ __move_freepages_block(zone, start_pfn, from_mt, to_mt);
+ toggle_pageblock_isolate(pfn_to_page(start_pfn), isolate);
+
return true;
}
+
+bool pageblock_isolate_and_move_free_pages(struct zone *zone, struct page *page)
+{
+ return __move_freepages_block_isolate(zone, page, true);
+}
+
+bool pageblock_unisolate_and_move_free_pages(struct zone *zone, struct page *page)
+{
+ return __move_freepages_block_isolate(zone, page, false);
+}
+
#endif /* CONFIG_MEMORY_ISOLATION */
static void change_pageblock_range(struct page *pageblock_page,
@@ -2296,6 +2341,7 @@ try_to_claim_block(struct zone *zone, st
if (free_pages + alike_pages >= (1 << (pageblock_order-1)) ||
page_group_by_mobility_disabled) {
__move_freepages_block(zone, start_pfn, block_type, start_type);
+ set_pageblock_migratetype(pfn_to_page(start_pfn), start_type);
return __rmqueue_smallest(zone, order, start_type);
}
--- a/mm/page_isolation.c~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/mm/page_isolation.c
@@ -188,7 +188,7 @@ static int set_migratetype_isolate(struc
unmovable = has_unmovable_pages(check_unmovable_start, check_unmovable_end,
migratetype, isol_flags);
if (!unmovable) {
- if (!move_freepages_block_isolate(zone, page, MIGRATE_ISOLATE)) {
+ if (!pageblock_isolate_and_move_free_pages(zone, page)) {
spin_unlock_irqrestore(&zone->lock, flags);
return -EBUSY;
}
@@ -209,7 +209,7 @@ static int set_migratetype_isolate(struc
return -EBUSY;
}
-static void unset_migratetype_isolate(struct page *page, int migratetype)
+static void unset_migratetype_isolate(struct page *page)
{
struct zone *zone;
unsigned long flags;
@@ -262,10 +262,10 @@ static void unset_migratetype_isolate(st
* Isolating this block already succeeded, so this
* should not fail on zone boundaries.
*/
- WARN_ON_ONCE(!move_freepages_block_isolate(zone, page, migratetype));
+ WARN_ON_ONCE(!pageblock_unisolate_and_move_free_pages(zone, page));
} else {
- set_pageblock_migratetype(page, migratetype);
- __putback_isolated_page(page, order, migratetype);
+ clear_pageblock_isolate(page);
+ __putback_isolated_page(page, order, get_pageblock_migratetype(page));
}
zone->nr_isolate_pageblock--;
out:
@@ -383,7 +383,7 @@ static int isolate_single_pageblock(unsi
if (PageBuddy(page)) {
int order = buddy_order(page);
- /* move_freepages_block_isolate() handled this */
+ /* pageblock_isolate_and_move_free_pages() handled this */
VM_WARN_ON_ONCE(pfn + (1 << order) > boundary_pfn);
pfn += 1UL << order;
@@ -433,7 +433,7 @@ static int isolate_single_pageblock(unsi
failed:
/* restore the original migratetype */
if (!skip_isolation)
- unset_migratetype_isolate(pfn_to_page(isolate_pageblock), migratetype);
+ unset_migratetype_isolate(pfn_to_page(isolate_pageblock));
return -EBUSY;
}
@@ -504,7 +504,7 @@ int start_isolate_page_range(unsigned lo
ret = isolate_single_pageblock(isolate_end, flags, true,
skip_isolation, migratetype);
if (ret) {
- unset_migratetype_isolate(pfn_to_page(isolate_start), migratetype);
+ unset_migratetype_isolate(pfn_to_page(isolate_start));
return ret;
}
@@ -517,8 +517,7 @@ int start_isolate_page_range(unsigned lo
start_pfn, end_pfn)) {
undo_isolate_page_range(isolate_start, pfn, migratetype);
unset_migratetype_isolate(
- pfn_to_page(isolate_end - pageblock_nr_pages),
- migratetype);
+ pfn_to_page(isolate_end - pageblock_nr_pages));
return -EBUSY;
}
}
@@ -548,7 +547,7 @@ void undo_isolate_page_range(unsigned lo
page = __first_valid_page(pfn, pageblock_nr_pages);
if (!page || !is_migrate_isolate_page(page))
continue;
- unset_migratetype_isolate(page, migratetype);
+ unset_migratetype_isolate(page);
}
}
/*
_
Patches currently in -mm which might be from ziy@nvidia.com are
mm-rename-config_page_block_order-to-config_page_block_max_order.patch
mm-page_alloc-pageblock-flags-functions-clean-up.patch
mm-page_isolation-make-page-isolation-a-standalone-bit.patch
mm-page_alloc-add-support-for-initializing-pageblock-as-isolated.patch
mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
mm-page_isolation-remove-migratetype-from-undo_isolate_page_range.patch
mm-page_isolation-remove-migratetype-parameter-from-more-functions.patch
^ permalink raw reply [flat|nested] 5+ messages in thread
* + mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch added to mm-new branch
@ 2025-06-17 2:20 Andrew Morton
0 siblings, 0 replies; 5+ messages in thread
From: Andrew Morton @ 2025-06-17 2:20 UTC (permalink / raw)
To: mm-commits, vbabka, surenb, richardycc, osalvador, mhocko,
mgorman, kirill.shutemov, jackmanb, hannes, david, baolin.wang,
ziy, akpm
The patch titled
Subject: mm/page_isolation: remove migratetype from move_freepages_block_isolate()
has been added to the -mm mm-new branch. Its filename is
mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
This patch will later appear in the mm-new branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews. Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Zi Yan <ziy@nvidia.com>
Subject: mm/page_isolation: remove migratetype from move_freepages_block_isolate()
Date: Mon, 16 Jun 2025 22:11:12 -0400
Since migratetype is no longer overwritten during pageblock isolation,
moving a pageblock out of MIGRATE_ISOLATE no longer needs a new
migratetype.
Add pageblock_isolate_and_move_free_pages() and
pageblock_unisolate_and_move_free_pages() to be explicit about the page
isolation operations. Both share the common code in
__move_freepages_block_isolate(), which is renamed from
move_freepages_block_isolate().
Add toggle_pageblock_isolate() to flip pageblock isolation bit in
__move_freepages_block_isolate().
Make set_pageblock_migratetype() only accept non MIGRATE_ISOLATE types, so
that one should use set_pageblock_isolate() to isolate pageblocks. As a
result, move pageblock migratetype code out of __move_freepages_block().
Link: https://lkml.kernel.org/r/20250617021115.2331563-5-ziy@nvidia.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shuemov <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Richard Chang <richardycc@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
include/linux/page-isolation.h | 5 -
mm/page_alloc.c | 80 ++++++++++++++++++++++++-------
mm/page_isolation.c | 21 +++-----
3 files changed, 75 insertions(+), 31 deletions(-)
--- a/include/linux/page-isolation.h~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/include/linux/page-isolation.h
@@ -44,10 +44,9 @@ static inline void set_pageblock_isolate
void __meminit init_pageblock_migratetype(struct page *page,
enum migratetype migratetype,
bool isolate);
-void set_pageblock_migratetype(struct page *page, enum migratetype migratetype);
-bool move_freepages_block_isolate(struct zone *zone, struct page *page,
- int migratetype);
+bool pageblock_isolate_and_move_free_pages(struct zone *zone, struct page *page);
+bool pageblock_unisolate_and_move_free_pages(struct zone *zone, struct page *page);
int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
int migratetype, int flags);
--- a/mm/page_alloc.c~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/mm/page_alloc.c
@@ -525,8 +525,8 @@ void clear_pfnblock_bit(const struct pag
* @page: The page within the block of interest
* @migratetype: migratetype to set
*/
-__always_inline void set_pageblock_migratetype(struct page *page,
- enum migratetype migratetype)
+static void set_pageblock_migratetype(struct page *page,
+ enum migratetype migratetype)
{
if (unlikely(page_group_by_mobility_disabled &&
migratetype < MIGRATE_PCPTYPES))
@@ -534,9 +534,13 @@ __always_inline void set_pageblock_migra
#ifdef CONFIG_MEMORY_ISOLATION
if (migratetype == MIGRATE_ISOLATE) {
- set_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate);
+ VM_WARN_ONCE(1,
+ "Use set_pageblock_isolate() for pageblock isolation");
return;
}
+ VM_WARN_ONCE(get_pfnblock_bit(page, page_to_pfn(page),
+ PB_migrate_isolate),
+ "Use clear_pageblock_isolate() to unisolate pageblock");
/* MIGRATETYPE_AND_ISO_MASK clears PB_migrate_isolate if it is set */
#endif
__set_pfnblock_flags_mask(page, page_to_pfn(page),
@@ -1921,8 +1925,8 @@ static inline struct page *__rmqueue_cma
#endif
/*
- * Change the type of a block and move all its free pages to that
- * type's freelist.
+ * Move all free pages of a block to new type's freelist. Caller needs to
+ * change the block type.
*/
static int __move_freepages_block(struct zone *zone, unsigned long start_pfn,
int old_mt, int new_mt)
@@ -1954,8 +1958,6 @@ static int __move_freepages_block(struct
pages_moved += 1 << order;
}
- set_pageblock_migratetype(pfn_to_page(start_pfn), new_mt);
-
return pages_moved;
}
@@ -2013,11 +2015,16 @@ static int move_freepages_block(struct z
int old_mt, int new_mt)
{
unsigned long start_pfn;
+ int res;
if (!prep_move_freepages_block(zone, page, &start_pfn, NULL, NULL))
return -1;
- return __move_freepages_block(zone, start_pfn, old_mt, new_mt);
+ res = __move_freepages_block(zone, start_pfn, old_mt, new_mt);
+ set_pageblock_migratetype(pfn_to_page(start_pfn), new_mt);
+
+ return res;
+
}
#ifdef CONFIG_MEMORY_ISOLATION
@@ -2045,11 +2052,19 @@ static unsigned long find_large_buddy(un
return start_pfn;
}
+static inline void toggle_pageblock_isolate(struct page *page, bool isolate)
+{
+ if (isolate)
+ set_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate);
+ else
+ clear_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate);
+}
+
/**
- * move_freepages_block_isolate - move free pages in block for page isolation
+ * __move_freepages_block_isolate - move free pages in block for page isolation
* @zone: the zone
* @page: the pageblock page
- * @migratetype: migratetype to set on the pageblock
+ * @isolate: to isolate the given pageblock or unisolate it
*
* This is similar to move_freepages_block(), but handles the special
* case encountered in page isolation, where the block of interest
@@ -2064,10 +2079,18 @@ static unsigned long find_large_buddy(un
*
* Returns %true if pages could be moved, %false otherwise.
*/
-bool move_freepages_block_isolate(struct zone *zone, struct page *page,
- int migratetype)
+static bool __move_freepages_block_isolate(struct zone *zone,
+ struct page *page, bool isolate)
{
unsigned long start_pfn, pfn;
+ int from_mt;
+ int to_mt;
+
+ if (isolate == get_pageblock_isolate(page)) {
+ VM_WARN_ONCE(1, "%s a pageblock that is already in that state",
+ isolate ? "Isolate" : "Unisolate");
+ return false;
+ }
if (!prep_move_freepages_block(zone, page, &start_pfn, NULL, NULL))
return false;
@@ -2084,7 +2107,7 @@ bool move_freepages_block_isolate(struct
del_page_from_free_list(buddy, zone, order,
get_pfnblock_migratetype(buddy, pfn));
- set_pageblock_migratetype(page, migratetype);
+ toggle_pageblock_isolate(page, isolate);
split_large_buddy(zone, buddy, pfn, order, FPI_NONE);
return true;
}
@@ -2095,16 +2118,38 @@ bool move_freepages_block_isolate(struct
del_page_from_free_list(page, zone, order,
get_pfnblock_migratetype(page, pfn));
- set_pageblock_migratetype(page, migratetype);
+ toggle_pageblock_isolate(page, isolate);
split_large_buddy(zone, page, pfn, order, FPI_NONE);
return true;
}
move:
- __move_freepages_block(zone, start_pfn,
- get_pfnblock_migratetype(page, start_pfn),
- migratetype);
+ /* Use MIGRATETYPE_MASK to get non-isolate migratetype */
+ if (isolate) {
+ from_mt = __get_pfnblock_flags_mask(page, page_to_pfn(page),
+ MIGRATETYPE_MASK);
+ to_mt = MIGRATE_ISOLATE;
+ } else {
+ from_mt = MIGRATE_ISOLATE;
+ to_mt = __get_pfnblock_flags_mask(page, page_to_pfn(page),
+ MIGRATETYPE_MASK);
+ }
+
+ __move_freepages_block(zone, start_pfn, from_mt, to_mt);
+ toggle_pageblock_isolate(pfn_to_page(start_pfn), isolate);
+
return true;
}
+
+bool pageblock_isolate_and_move_free_pages(struct zone *zone, struct page *page)
+{
+ return __move_freepages_block_isolate(zone, page, true);
+}
+
+bool pageblock_unisolate_and_move_free_pages(struct zone *zone, struct page *page)
+{
+ return __move_freepages_block_isolate(zone, page, false);
+}
+
#endif /* CONFIG_MEMORY_ISOLATION */
static void change_pageblock_range(struct page *pageblock_page,
@@ -2296,6 +2341,7 @@ try_to_claim_block(struct zone *zone, st
if (free_pages + alike_pages >= (1 << (pageblock_order-1)) ||
page_group_by_mobility_disabled) {
__move_freepages_block(zone, start_pfn, block_type, start_type);
+ set_pageblock_migratetype(pfn_to_page(start_pfn), start_type);
return __rmqueue_smallest(zone, order, start_type);
}
--- a/mm/page_isolation.c~mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate
+++ a/mm/page_isolation.c
@@ -188,7 +188,7 @@ static int set_migratetype_isolate(struc
unmovable = has_unmovable_pages(check_unmovable_start, check_unmovable_end,
migratetype, isol_flags);
if (!unmovable) {
- if (!move_freepages_block_isolate(zone, page, MIGRATE_ISOLATE)) {
+ if (!pageblock_isolate_and_move_free_pages(zone, page)) {
spin_unlock_irqrestore(&zone->lock, flags);
return -EBUSY;
}
@@ -209,7 +209,7 @@ static int set_migratetype_isolate(struc
return -EBUSY;
}
-static void unset_migratetype_isolate(struct page *page, int migratetype)
+static void unset_migratetype_isolate(struct page *page)
{
struct zone *zone;
unsigned long flags;
@@ -262,10 +262,10 @@ static void unset_migratetype_isolate(st
* Isolating this block already succeeded, so this
* should not fail on zone boundaries.
*/
- WARN_ON_ONCE(!move_freepages_block_isolate(zone, page, migratetype));
+ WARN_ON_ONCE(!pageblock_unisolate_and_move_free_pages(zone, page));
} else {
- set_pageblock_migratetype(page, migratetype);
- __putback_isolated_page(page, order, migratetype);
+ clear_pageblock_isolate(page);
+ __putback_isolated_page(page, order, get_pageblock_migratetype(page));
}
zone->nr_isolate_pageblock--;
out:
@@ -383,7 +383,7 @@ static int isolate_single_pageblock(unsi
if (PageBuddy(page)) {
int order = buddy_order(page);
- /* move_freepages_block_isolate() handled this */
+ /* pageblock_isolate_and_move_free_pages() handled this */
VM_WARN_ON_ONCE(pfn + (1 << order) > boundary_pfn);
pfn += 1UL << order;
@@ -433,7 +433,7 @@ static int isolate_single_pageblock(unsi
failed:
/* restore the original migratetype */
if (!skip_isolation)
- unset_migratetype_isolate(pfn_to_page(isolate_pageblock), migratetype);
+ unset_migratetype_isolate(pfn_to_page(isolate_pageblock));
return -EBUSY;
}
@@ -504,7 +504,7 @@ int start_isolate_page_range(unsigned lo
ret = isolate_single_pageblock(isolate_end, flags, true,
skip_isolation, migratetype);
if (ret) {
- unset_migratetype_isolate(pfn_to_page(isolate_start), migratetype);
+ unset_migratetype_isolate(pfn_to_page(isolate_start));
return ret;
}
@@ -517,8 +517,7 @@ int start_isolate_page_range(unsigned lo
start_pfn, end_pfn)) {
undo_isolate_page_range(isolate_start, pfn, migratetype);
unset_migratetype_isolate(
- pfn_to_page(isolate_end - pageblock_nr_pages),
- migratetype);
+ pfn_to_page(isolate_end - pageblock_nr_pages));
return -EBUSY;
}
}
@@ -548,7 +547,7 @@ void undo_isolate_page_range(unsigned lo
page = __first_valid_page(pfn, pageblock_nr_pages);
if (!page || !is_migrate_isolate_page(page))
continue;
- unset_migratetype_isolate(page, migratetype);
+ unset_migratetype_isolate(page);
}
}
/*
_
Patches currently in -mm which might be from ziy@nvidia.com are
mm-rename-config_page_block_order-to-config_page_block_max_order.patch
mm-page_alloc-pageblock-flags-functions-clean-up.patch
mm-page_isolation-make-page-isolation-a-standalone-bit.patch
mm-page_alloc-add-support-for-initializing-pageblock-as-isolated.patch
mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
mm-page_isolation-remove-migratetype-from-undo_isolate_page_range.patch
mm-page_isolation-remove-migratetype-parameter-from-more-functions.patch
^ permalink raw reply [flat|nested] 5+ messages in thread
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2025-05-09 22:17 + mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch added to mm-new branch Andrew Morton
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