Linus Torvalds wrote:
> On Fri, 23 May 2008, Jeremy Fitzhardinge wrote:
>
>> This series adds the pte_rmw_start() and pte_rmw_commit() operations,
>> which change this sequence to:
>>
>> ptent = pte_rmw_start(mm, addr, pte);
>> ptent = pte_modify(ptent, newprot);
>> /* ... */
>> pte_rmw_commit(mm, addr, pte, ptent);
>>
>
> Can you please rename these.
>
> It's not a general "read-modify-write" operation on the PTE, and this
> *only* works for changing protection details. In particular, you cannot
> use pte_rmw_start/commit to change the actual page. So it's very much
> about just protection bits.
>
Well, you could use it to update the page and protection bits while
preserving the AD bits, but I don't think that's very useful.
> It should probably also be called ptep_xyz(), since it takes a pte
> pointer, not a pte.
>
> So maybe calling it "ptent = ptep_modify_prot_start(..)" ...
> "ptep_modify_prot_commit(..)" or something.
>
Yep, sounds fine to me.
J
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