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authorPavel Begunkov <asml.silence@gmail.com>2021-06-14 02:36:12 +0100
committerJens Axboe <axboe@kernel.dk>2021-06-14 08:23:12 -0600
commitc7f405d6fa36f778931881bfb1e12dd401d0bc62 (patch)
tree13603b32cbf5d8dfe4e105f4ad866693685dae5c /fs/io-wq.c
parent976517f162a05f4315b2373fd11585c395506259 (diff)
downloadlinux-c7f405d6fa36f778931881bfb1e12dd401d0bc62.tar.bz2
io-wq: embed wqe ptr array into struct io_wq
io-wq keeps an array of pointers to struct io_wqe, allocate this array as a part of struct io-wq, it's easier to code and saves an extra indirection for nearly each io-wq call. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/1482c6a001923bbed662dc38a8a580fb08b1ed8c.1623634181.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/io-wq.c')
-rw-r--r--fs/io-wq.c15
1 files changed, 4 insertions, 11 deletions
diff --git a/fs/io-wq.c b/fs/io-wq.c
index b3e8624a37d0..1ca98fc7d52b 100644
--- a/fs/io-wq.c
+++ b/fs/io-wq.c
@@ -102,7 +102,6 @@ struct io_wqe {
* Per io_wq state
*/
struct io_wq {
- struct io_wqe **wqes;
unsigned long state;
free_work_fn *free_work;
@@ -118,6 +117,8 @@ struct io_wq {
struct hlist_node cpuhp_node;
struct task_struct *task;
+
+ struct io_wqe *wqes[];
};
static enum cpuhp_state io_wq_online;
@@ -907,17 +908,12 @@ struct io_wq *io_wq_create(unsigned bounded, struct io_wq_data *data)
if (WARN_ON_ONCE(!data->free_work || !data->do_work))
return ERR_PTR(-EINVAL);
- wq = kzalloc(sizeof(*wq), GFP_KERNEL);
+ wq = kzalloc(struct_size(wq, wqes, nr_node_ids), GFP_KERNEL);
if (!wq)
return ERR_PTR(-ENOMEM);
-
- wq->wqes = kcalloc(nr_node_ids, sizeof(struct io_wqe *), GFP_KERNEL);
- if (!wq->wqes)
- goto err_wq;
-
ret = cpuhp_state_add_instance_nocalls(io_wq_online, &wq->cpuhp_node);
if (ret)
- goto err_wqes;
+ goto err_wq;
refcount_inc(&data->hash->refs);
wq->hash = data->hash;
@@ -962,8 +958,6 @@ err:
cpuhp_state_remove_instance_nocalls(io_wq_online, &wq->cpuhp_node);
for_each_node(node)
kfree(wq->wqes[node]);
-err_wqes:
- kfree(wq->wqes);
err_wq:
kfree(wq);
return ERR_PTR(ret);
@@ -1036,7 +1030,6 @@ static void io_wq_destroy(struct io_wq *wq)
kfree(wqe);
}
io_wq_put_hash(wq->hash);
- kfree(wq->wqes);
kfree(wq);
}