add closefrom() call

[LI Xin]

Robert Watson wrote:
> The Solaris implementation appears to implement two strategies:
> 
> (1) If procfs is mounted, list the fd directory to get a list of open fds,
>     then close those by number.
> 
> (2) If procfs is not mounted, query the number of open fds using the
> resource
>     limit interface, then sequentially close until the right number close.
> 
> Hence my question as to whether there's actually a big benefit or not --
> do we think closefrom() is a performance-critical function?

Nope.

I will try to see if we have some way to expose lastfile to userland, or
whether we have some better approach to implement this in userland next
week if I would have some spare time...

Cheers,
-- 
Xin LI <delphij at delphij.net>	http://www.delphij.net/
FreeBSD - The Power to Serve!

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 249 bytes
Desc: OpenPGP digital signature
Url : http://lists.freebsd.org/pipermail/freebsd-hackers/attachments/20070709/f8b8c300/signature.pgp