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 <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 3 insertions, 17 deletions

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);
 }