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arm: bpf_jit: can call module_free() from any context

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Follow-up on module_free()/vfree() that takes care of the rest, so no
longer this workaround with work_struct needed.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Mircea Gherzan <mgherzan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Borkmann
2013-05-20 08:05:51 +00:00
committed by David S. Miller
parent ed900ffb73
commit aafc787e41
1 changed files with 3 additions and 15 deletions
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18
arch/arm/net/bpf_jit_32.c
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@@ -900,8 +900,7 @@ void bpf_jit_compile(struct sk_filter *fp)
#endif #endif
alloc_size = 4 * ctx.idx; alloc_size = 4 * ctx.idx;
ctx.target = module_alloc(max(sizeof(struct work_struct), ctx.target = module_alloc(alloc_size);
alloc_size));
if (unlikely(ctx.target == NULL)) if (unlikely(ctx.target == NULL))
goto out; goto out;
@@ -927,19 +926,8 @@ out:
return; return;
} }
static void bpf_jit_free_worker(struct work_struct *work)
{
module_free(NULL, work);
}
void bpf_jit_free(struct sk_filter *fp) void bpf_jit_free(struct sk_filter *fp)
{ {
struct work_struct *work; if (fp->bpf_func != sk_run_filter)
module_free(NULL, fp->bpf_func);
if (fp->bpf_func != sk_run_filter) {
work = (struct work_struct *)fp->bpf_func;
INIT_WORK(work, bpf_jit_free_worker);
schedule_work(work);
}
} }