Messages in this thread | | | Date | Mon, 28 Jul 2014 15:43:26 -0700 (PDT) | From | David Rientjes <> | Subject | Re: [PATCH] mm: don't allow fault_around_bytes to be 0 |
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On Mon, 28 Jul 2014, Andrey Ryabinin wrote:
> do_fault_around expects fault_around_bytes rounded down to nearest > page order. Instead of calling rounddown_pow_of_two every time > in fault_around_pages()/fault_around_mask() we could do round down > when user changes fault_around_bytes via debugfs interface. >
If you're going to optimize this, it seems like fault_around_bytes would benefit from being __read_mostly.
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