Re: [BusyBox] [Fwd: Loopback device setup?]

[vda]

On Tuesday 17 February 2004 02:20, Tom Guilliams wrote:
> in /driver/block/loop.c -
>
> loop_set_fd()
>
> 		/*
>                   * If we can't read - sorry. If we only can't write -
>                  		 * well, it's going to be read-only.
>                   */
>                  if (!aops->readpage)
>                          goto out_putf;
>
> I confirmed the "if (!aops->readpage)" is true.  I'm not sure what the
> readpage routine is trying to do (which dev or file) in my command below -
> # mount -t ext2 -o loop ramdisk.image rootfs
>
> Anyone have any thoughts??  This is all being done in the /tmp
> dircectory which is mounted as "tmpfs".  Not sure if that has anything
> to do with it.

I recall that tmpfs cannot do readpage (by design?).
CCing LKML, maybe someone will pour in more info.
-- 
vda
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