| Subject | Re: [patch 03/33] fs: scale files_lock | From | Peter Zijlstra <> | Date | Mon, 28 Sep 2009 15:22:19 +0200 |
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On Fri, 2009-09-04 at 16:51 +1000, npiggin@suse.de wrote: > +static void file_list_lock_all(void) > +{ > + int i; > + int nr = 0; > + > + for_each_possible_cpu(i) { > + spinlock_t *lock; > + > + lock = &per_cpu(files_cpulock, i); > + spin_lock_nested(lock, nr); > + nr++; > + } > +}
Same here, this'll make lockdep explode on >8-way. And create large spin times on large smp boxen.
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