Rik van Riel <[EMAIL PROTECTED]> writes:
> On 10 Nov 1999, Eric W. Biederman wrote:
>> Rik van Riel <[EMAIL PROTECTED]> writes:
>>
>>> I know this could involve an extra copy of the page for
>>> writing, but it fits in really well with the transactioning
>>> scheme and could, with the proper API, give us a way to
>>> implement a high-performance transactioning interface for
>>> userspace.
>>
>> The user space side of this idea seems completely silly.
>> Plus user space has more issues to contend with.
>
> Yes, absolutely.
>
> The main idea of my COW snapshotting was to facilitate
> journalled writeout of shared mappings (that are dirtied
> behind our backs spontaneously). The transactioning from
> userspace was only a side issue that popped into my mind
> for 5 seconds :)
AIX already has this ability. (transactioning from userspace)
The man pages are online, so you could see if the API is reasonable.
