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| author | Miaohe Lin <linmiaohe@huawei.com> | 2022-04-29 14:40:43 +0800 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-05-27 09:33:43 -0700 |
| commit | f4bad643c1d602f7154cf0d8eeb509136a55dccb (patch) | |
| tree | 981af459f91b7c7f4775db7386a3b57d61b8fb99 /mm/z3fold.c | |
| parent | 2c0f351434785626beb5cb49962b4e873459fd38 (diff) | |
| download | lwn-f4bad643c1d602f7154cf0d8eeb509136a55dccb.tar.gz lwn-f4bad643c1d602f7154cf0d8eeb509136a55dccb.zip | |
revert "mm/z3fold.c: allow __GFP_HIGHMEM in z3fold_alloc"
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@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/z3fold.c')
| -rw-r--r-- | mm/z3fold.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/mm/z3fold.c b/mm/z3fold.c index b3b4e65c107f..5f5d5f1556be 100644 --- a/mm/z3fold.c +++ b/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_pool *pool, size_t size, gfp_t gfp, enum buddy bud; bool can_sleep = gfpflags_allow_blocking(gfp); - if (!size) + if (!size || (gfp & __GFP_HIGHMEM)) return -EINVAL; if (size > PAGE_SIZE) |