The quilt patch titled
Subject: revert "mm/z3fold.c: allow __GFP_HIGHMEM in z3fold_alloc"
has been removed from the -mm tree. Its filename was
revert-mm-z3foldc-allow-__gfp_highmem-in-z3fold_alloc.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: revert "mm/z3fold.c: allow __GFP_HIGHMEM in z3fold_alloc"
Date: Fri, 29 Apr 2022 14:40:43 +0800
Revert commit f1549cb5ab2b ("mm/z3fold.c: allow __GFP_HIGHMEM in
z3fold_alloc").
z3fold can't support GFP_HIGHMEM page now. page_address is used directly
at all places. Moreover, z3fold_header is on per cpu unbuddied list which
could be accessed anytime. So we should remove the support of GFP_HIGHMEM
allocation for z3fold.
Link: https://lkml.kernel.org/r/20220429064051.61552-6-linmiaohe@xxxxxxxxxx
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Vitaly Wool <vitaly.wool@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/z3fold.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
--- a/mm/z3fold.c~revert-mm-z3foldc-allow-__gfp_highmem-in-z3fold_alloc
+++ a/mm/z3fold.c
@@ -212,10 +212,8 @@ static int size_to_chunks(size_t size)
static inline struct z3fold_buddy_slots *alloc_slots(struct z3fold_pool *pool,
gfp_t gfp)
{
- struct z3fold_buddy_slots *slots;
-
- slots = kmem_cache_zalloc(pool->c_handle,
- (gfp & ~(__GFP_HIGHMEM | __GFP_MOVABLE)));
+ struct z3fold_buddy_slots *slots = kmem_cache_zalloc(pool->c_handle,
+ gfp);
if (slots) {
/* It will be freed separately in free_handle(). */
@@ -1075,7 +1073,7 @@ static int z3fold_alloc(struct z3fold_po
enum buddy bud;
bool can_sleep = gfpflags_allow_blocking(gfp);
- if (!size)
+ if (!size || (gfp & __GFP_HIGHMEM))
return -EINVAL;
if (size > PAGE_SIZE)
_
Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are
