Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2007-08-16 02:02:24
Also in:
linux-arch, lkml
On Thu, Aug 16, 2007 at 11:51:42AM +1000, Paul Mackerras wrote:
Name one such case.
See sk_stream_mem_schedule in net/core/stream.c:
/* Under limit. */
if (atomic_read(sk->sk_prot->memory_allocated) < sk->sk_prot->sysctl_mem[0]) {
if (*sk->sk_prot->memory_pressure)
*sk->sk_prot->memory_pressure = 0;
return 1;
}
/* Over hard limit. */
if (atomic_read(sk->sk_prot->memory_allocated) > sk->sk_prot->sysctl_mem[2]) {
sk->sk_prot->enter_memory_pressure();
goto suppress_allocation;
}
We don't need to reload sk->sk_prot->memory_allocated here.
Now where is your example again?
Cheers,
--
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