Re: [PATCH] 2.5.21 Nonlinear CPU support

Rusty Russell (rusty@rustcorp.com.au)
Wed, 12 Jun 2002 18:01:28 +1000

In message <E17I30q-00077h-00@the-village.bc.nu> you write:
> > --- linux-2.5.21.24110/fs/ntfs/compress.c Sat May 25 14:34:53 2002
> > return -ENOMEM;
> > - for (i = 0; i < smp_num_cpus; i++) {
> > + for (i = 0; i < NR_CPUS; i++) {
> > ntfs_compression_buffers[i] = (u8*)vmalloc(NTFS_MAX_CB_SIZE);
> > if (!ntfs_compression_buffers[i])
> > break;
>
> 2Mbytes !!!!!!
>
> Add a cpu count changed notifier ?

There is one in the next patch, of course. But with that patch you
also get cpu_possible():

for (i = 0; i < NR_CPUS; i++) {
if (!cpu_possible(i)) {
ntfs_compression_buffers[i] = NULL;
continue;
}

Hope that clarifies,
Rusty.

--
  Anyone who quotes me in their sig is an idiot. -- Rusty Russell.
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