RE: genfs_getpages vs. genfs_compat_getpages

[<Paul_Koning%Dell.com@localhost>]

-----Original Message-----
From: Eduardo Horvath [mailto:eeh%NetBSD.org@localhost] 
Sent: Tuesday, August 02, 2011 2:41 PM
To: Koning, Paul
Cc: tech-kern%netbsd.org@localhost
Subject: Re: genfs_getpages vs. genfs_compat_getpages

On Tue, 2 Aug 2011, Paul_Koning%Dell.com@localhost wrote:

> Gentlepeople,
> 
> Some file systems use genfs_compat_getpages while others (most of them) use 
> genfs_getpages.  I'm trying to figure out the essential differences, and why 
> one would pick one over the other.
> 
> Any pointers?

genfs_vnops.c:

revision 1.43
date: 2001/12/18 07:49:36;  author: chs;  state: Exp;  lines: +137 -2 add some 
compatibility routines to allow mmap() to work non-UBCified filesystems (in the 
same non-coherent fashion that they worked before).
=============================================================================


Thanks, that helps.  It makes me wonder why NTFS uses it.  Not quite such a 
surprise that LFS uses it...

        paul