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SubjectRe: [BK-PATCH-2.5] Introduce new VFS inode cache lookup function
David Woodhouse writes:
>
> aia21@cantab.net said:
> > The below ChangeSet against Linus' current BK tree adds a new function
> > to the VFS, fs/inode.c::ilookup().
>
> > This is needed in NTFS when writing out inode metadata pages via the
> > VM dirty page code paths as we need to know whether there is an active
> > inode in icache but we don't want to do an iget() because if the inode
> > is not active then there is no need to write it... - I can just skip
> > onto the next one instead... - If there is an active inode then I need
> > to get the struct inode in order to perform appropriate locking for
> > the write out to happen.
>
> Yum. I need similar functionality for JFFS2 garbage collection. When moving
> a data node, we currently iget() the inode to which it belongs and update
> its in-core extent lists accordingly. If the inode in question wasn't
> already present, there's no real need to do that.
>

Reiser4 also needs this.

> --
> dwmw2
>

Nikita.

>
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