From: Heiko Carstens Date: Tue, 16 Jul 2013 08:24:48 +0000 (+0200) Subject: s390/bpf,jit: call module_free() from any context X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1eeb74782d354175ef9f3bff02fae62c6e0aef24;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git s390/bpf,jit: call module_free() from any context The workqueue workaround is no longer needed. Same as 5199dfe531 "sparc: bpf_jit_comp: can call module_free() from any context". Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index 82f165f8078c..a41f0b15faa1 100644 --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -772,8 +772,7 @@ void bpf_jit_compile(struct sk_filter *fp) } else if (jit.prg == cjit.prg && jit.lit == cjit.lit) { prg_len = jit.prg - jit.start; lit_len = jit.lit - jit.mid; - size = max_t(unsigned long, prg_len + lit_len, - sizeof(struct work_struct)); + size = prg_len + lit_len; if (size >= BPF_SIZE_MAX) goto out; jit.start = module_alloc(size); @@ -804,21 +803,8 @@ out: kfree(addrs); } -static void jit_free_defer(struct work_struct *arg) -{ - module_free(NULL, arg); -} - -/* run from softirq, we must use a work_struct to call - * module_free() from process context - */ void bpf_jit_free(struct sk_filter *fp) { - struct work_struct *work; - - if (fp->bpf_func == sk_run_filter) - return; - work = (struct work_struct *)fp->bpf_func; - INIT_WORK(work, jit_free_defer); - schedule_work(work); + if (fp->bpf_func != sk_run_filter) + module_free(NULL, fp->bpf_func); }