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mempool: add @gfp_mask to mempool_create_node()

mempool_create_node() currently assumes %GFP_KERNEL.  Its only user,
blk_init_free_list(), is about to be updated to use other allocation
flags - add @gfp_mask argument to the function.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
master
Tejun Heo 10 years ago
committed by Jens Axboe
parent
commit
a91a5ac685
  1. 4
      block/blk-core.c
  2. 3
      include/linux/mempool.h
  3. 12
      mm/mempool.c

4
block/blk-core.c

@ -531,8 +531,8 @@ static int blk_init_free_list(struct request_queue *q)
init_waitqueue_head(&rl->wait[BLK_RW_ASYNC]);
rl->rq_pool = mempool_create_node(BLKDEV_MIN_RQ, mempool_alloc_slab,
mempool_free_slab, request_cachep, q->node);
mempool_free_slab, request_cachep,
GFP_KERNEL, q->node);
if (!rl->rq_pool)
return -ENOMEM;

3
include/linux/mempool.h

@ -26,7 +26,8 @@ typedef struct mempool_s {
extern mempool_t *mempool_create(int min_nr, mempool_alloc_t *alloc_fn,
mempool_free_t *free_fn, void *pool_data);
extern mempool_t *mempool_create_node(int min_nr, mempool_alloc_t *alloc_fn,
mempool_free_t *free_fn, void *pool_data, int nid);
mempool_free_t *free_fn, void *pool_data,
gfp_t gfp_mask, int nid);
extern int mempool_resize(mempool_t *pool, int new_min_nr, gfp_t gfp_mask);
extern void mempool_destroy(mempool_t *pool);

12
mm/mempool.c

@ -63,19 +63,21 @@ EXPORT_SYMBOL(mempool_destroy);
mempool_t *mempool_create(int min_nr, mempool_alloc_t *alloc_fn,
mempool_free_t *free_fn, void *pool_data)
{
return mempool_create_node(min_nr,alloc_fn,free_fn, pool_data,-1);
return mempool_create_node(min_nr,alloc_fn,free_fn, pool_data,
GFP_KERNEL, NUMA_NO_NODE);
}
EXPORT_SYMBOL(mempool_create);
mempool_t *mempool_create_node(int min_nr, mempool_alloc_t *alloc_fn,
mempool_free_t *free_fn, void *pool_data, int node_id)
mempool_free_t *free_fn, void *pool_data,
gfp_t gfp_mask, int node_id)
{
mempool_t *pool;
pool = kmalloc_node(sizeof(*pool), GFP_KERNEL | __GFP_ZERO, node_id);
pool = kmalloc_node(sizeof(*pool), gfp_mask | __GFP_ZERO, node_id);
if (!pool)
return NULL;
pool->elements = kmalloc_node(min_nr * sizeof(void *),
GFP_KERNEL, node_id);
gfp_mask, node_id);
if (!pool->elements) {
kfree(pool);
return NULL;
@ -93,7 +95,7 @@ mempool_t *mempool_create_node(int min_nr, mempool_alloc_t *alloc_fn,
while (pool->curr_nr < pool->min_nr) {
void *element;
element = pool->alloc(GFP_KERNEL, pool->pool_data);
element = pool->alloc(gfp_mask, pool->pool_data);
if (unlikely(!element)) {
mempool_destroy(pool);
return NULL;

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