lkml.org 
[lkml]   [2001]   [Sep]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Linux 2.4.10-pre11


On Tue, 18 Sep 2001, Andrea Arcangeli wrote:

> > > If we need to avoid the bumping of i_count and to allocate something
> > > dynamically that will be the bd_mapping address space, we don't need a
> > > new fake_inode there too, we just need to share the new physical
> > > pagecahce address space. Such physical i_mapping address space is the
> >
> > What are you going to use as mapping->host for it?
>
> the only info we'd need from the host is the host->i_rdev, so why can't
> we get it from the file->f_dentry->d_inode->i_rdev? In general I don't

In ->writepage()? Good luck. BTW, at some point use of ->i_rdev will have
to go - we need to be able to use ->i_bdev instead.

> like very much the fake inodes with the zillon of unused fields (they
> just looks confusing due their unused fields), but well if you for
> whatever reason prefer to keep doing page->mapping->host->i_rdev or if
> file->f_dentry->d_inode->i_rdev has a problem I'm pretty much ok with
> the fake_inode there too.

It doesn't have to be fake. See how it's done for sockets or pipes.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:03    [W:0.151 / U:0.128 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site