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From:   Roman Gushchin <guro@fb.com>
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Subject: [PATCH bpf-next v2 25/35] bpf: eliminate rlimit-based memory accounting for socket storage maps
Date:   Mon, 27 Jul 2020 11:44:56 -0700
Message-ID: <20200727184506.2279656-26-guro@fb.com>
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Do not use rlimit-based memory accounting for socket storage maps.
It has been replaced with the memcg-based memory accounting.

Signed-off-by: Roman Gushchin <guro@fb.com>
---
 net/core/bpf_sk_storage.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/net/core/bpf_sk_storage.c b/net/core/bpf_sk_storage.c
index fbcd03cd00d3..c0a35b6368af 100644
--- a/net/core/bpf_sk_storage.c
+++ b/net/core/bpf_sk_storage.c
@@ -676,8 +676,6 @@ static struct bpf_map *bpf_sk_storage_map_alloc(union=
 bpf_attr *attr)
 	struct bpf_sk_storage_map *smap;
 	unsigned int i;
 	u32 nbuckets;
-	u64 cost;
-	int ret;
=20
 	smap =3D kzalloc(sizeof(*smap), GFP_USER | __GFP_NOWARN | __GFP_ACCOUNT=
);
 	if (!smap)
@@ -688,18 +686,9 @@ static struct bpf_map *bpf_sk_storage_map_alloc(unio=
n bpf_attr *attr)
 	/* Use at least 2 buckets, select_bucket() is undefined behavior with 1=
 bucket */
 	nbuckets =3D max_t(u32, 2, nbuckets);
 	smap->bucket_log =3D ilog2(nbuckets);
-	cost =3D sizeof(*smap->buckets) * nbuckets + sizeof(*smap);
-
-	ret =3D bpf_map_charge_init(&smap->map.memory, cost);
-	if (ret < 0) {
-		kfree(smap);
-		return ERR_PTR(ret);
-	}
-
 	smap->buckets =3D kvcalloc(sizeof(*smap->buckets), nbuckets,
 				 GFP_USER | __GFP_NOWARN | __GFP_ACCOUNT);
 	if (!smap->buckets) {
-		bpf_map_charge_finish(&smap->map.memory);
 		kfree(smap);
 		return ERR_PTR(-ENOMEM);
 	}
--=20
2.26.2