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From:   Roman Gushchin <guro@fb.com>
To:     <bpf@vger.kernel.org>
CC:     <ast@kernel.org>, <daniel@iogearbox.net>, <netdev@vger.kernel.org>,
        <andrii@kernel.org>, <akpm@linux-foundation.org>,
        <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>,
        <kernel-team@fb.com>
Subject: [PATCH bpf-next v8 30/34] bpf: eliminate rlimit-based memory accounting for xskmap maps
Date:   Tue, 24 Nov 2020 19:01:15 -0800
Message-ID: <20201125030119.2864302-31-guro@fb.com>
In-Reply-To: <20201125030119.2864302-1-guro@fb.com>
References: <20201125030119.2864302-1-guro@fb.com>
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Do not use rlimit-based memory accounting for xskmap maps.
It has been replaced with the memcg-based memory accounting.

Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
---
 net/xdp/xskmap.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/net/xdp/xskmap.c b/net/xdp/xskmap.c
index eceea51182d9..217e224698b9 100644
--- a/net/xdp/xskmap.c
+++ b/net/xdp/xskmap.c
@@ -75,9 +75,8 @@ static void xsk_map_sock_delete(struct xdp_sock *xs,
=20
 static struct bpf_map *xsk_map_alloc(union bpf_attr *attr)
 {
-	struct bpf_map_memory mem;
-	int err, numa_node;
 	struct xsk_map *m;
+	int numa_node;
 	u64 size;
=20
 	if (!capable(CAP_NET_ADMIN))
@@ -91,18 +90,11 @@ static struct bpf_map *xsk_map_alloc(union bpf_attr *=
attr)
 	numa_node =3D bpf_map_attr_numa_node(attr);
 	size =3D struct_size(m, xsk_map, attr->max_entries);
=20
-	err =3D bpf_map_charge_init(&mem, size);
-	if (err < 0)
-		return ERR_PTR(err);
-
 	m =3D bpf_map_area_alloc(size, numa_node);
-	if (!m) {
-		bpf_map_charge_finish(&mem);
+	if (!m)
 		return ERR_PTR(-ENOMEM);
-	}
=20
 	bpf_map_init_from_attr(&m->map, attr);
-	bpf_map_charge_move(&m->map.memory, &mem);
 	spin_lock_init(&m->lock);
=20
 	return &m->map;
--=20
2.26.2