kmem_cache_alloc() may be called from z3fold_alloc() in atomic context, so we need to pass correct gfp flags to avoid "scheduling while atomic" bug.
Signed-off-by: Vitaly Wool <[email protected]> --- mm/z3fold.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/mm/z3fold.c b/mm/z3fold.c index 99be52c5ca45..985732c8b025 100644 --- a/mm/z3fold.c +++ b/mm/z3fold.c @@ -190,10 +190,11 @@ static int size_to_chunks(size_t size) static void compact_page_work(struct work_struct *w); -static inline struct z3fold_buddy_slots *alloc_slots(struct z3fold_pool *pool) +static inline struct z3fold_buddy_slots *alloc_slots(struct z3fold_pool *pool, + gfp_t gfp) { struct z3fold_buddy_slots *slots = kmem_cache_alloc(pool->c_handle, - GFP_KERNEL); + gfp); if (slots) { memset(slots->slot, 0, sizeof(slots->slot)); @@ -295,10 +296,10 @@ static void z3fold_unregister_migration(struct z3fold_pool *pool) /* Initializes the z3fold header of a newly allocated z3fold page */ static struct z3fold_header *init_z3fold_page(struct page *page, - struct z3fold_pool *pool) + struct z3fold_pool *pool, gfp_t gfp) { struct z3fold_header *zhdr = page_address(page); - struct z3fold_buddy_slots *slots = alloc_slots(pool); + struct z3fold_buddy_slots *slots = alloc_slots(pool, gfp); if (!slots) return NULL; @@ -912,7 +913,7 @@ static int z3fold_alloc(struct z3fold_pool *pool, size_t size, gfp_t gfp, if (!page) return -ENOMEM; - zhdr = init_z3fold_page(page, pool); + zhdr = init_z3fold_page(page, pool, gfp); if (!zhdr) { __free_page(page); return -ENOMEM; -- 2.17.1
