diff options
| author | Roman Gushchin <guro@fb.com> | 2020-12-01 13:58:59 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-12-02 18:32:47 -0800 |
| commit | 3ac1f01b43b6e2759cc34d3a715ba5eed04c5805 (patch) | |
| tree | 6d5ad0320c105f2f5a3ed73182b44dc320febd31 /kernel/bpf/core.c | |
| parent | 80ee81e0403c48f4eb342f7c8d40477c89b8836a (diff) | |
| download | linux-3ac1f01b43b6e2759cc34d3a715ba5eed04c5805.tar.gz linux-3ac1f01b43b6e2759cc34d3a715ba5eed04c5805.tar.xz | |
bpf: Eliminate rlimit-based memory accounting for bpf progs
Do not use rlimit-based memory accounting for bpf progs. It has been
replaced with memcg-based memory accounting.
Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20201201215900.3569844-34-guro@fb.com
Diffstat (limited to 'kernel/bpf/core.c')
| -rw-r--r-- | kernel/bpf/core.c | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index 2921f58c03a8..261f8692d0d2 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -221,23 +221,15 @@ struct bpf_prog *bpf_prog_realloc(struct bpf_prog *fp_old, unsigned int size, { gfp_t gfp_flags = GFP_KERNEL_ACCOUNT | __GFP_ZERO | gfp_extra_flags; struct bpf_prog *fp; - u32 pages, delta; - int ret; + u32 pages; size = round_up(size, PAGE_SIZE); pages = size / PAGE_SIZE; if (pages <= fp_old->pages) return fp_old; - delta = pages - fp_old->pages; - ret = __bpf_prog_charge(fp_old->aux->user, delta); - if (ret) - return NULL; - fp = __vmalloc(size, gfp_flags); - if (fp == NULL) { - __bpf_prog_uncharge(fp_old->aux->user, delta); - } else { + if (fp) { memcpy(fp, fp_old, fp_old->pages * PAGE_SIZE); fp->pages = pages; fp->aux->prog = fp; |