Re: [Xen-devel] find_next{,_zero}_bit() inconsistencies

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 30.08.16 at 11:26, <david.vrabel@xxxxxxxxxx> wrote:
> On 29/08/16 12:59, Jan Beulich wrote:
>> Hello,
>> 
>> in the context of
>> https://lists.xenproject.org/archives/html/xen-devel/2016-08/msg03068.html 
>> I once again came across the different behavior our various
>> implementations of the $subject functions, in particular their varying
>> handling of the offset argument being greater / greater-or-equal
>> the size argument. Shouldn't we settle on a single, uniform model,
>> which might be
>> 1) offset >= size is valid, returns size,
>> 2) offset == size is valid, returns size, offset > size is invalid,
>> 3) offset >= size is invalid.
> 
> What does the linux implementation do?

Their generic implementation follows 1). I didn't go and check arch
overrides.

Jan


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