Re: [Xen-devel] blktap2: Depend on XEN_BLKDEV_BACKEND

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

>>> Simon Horman <horms@xxxxxxxxxxxx> 31.03.10 08:51 >>>
>blktap2 needs blktap_prep_foreign.
>This dependency ensures that if XEN_BLKDEV_BACKEND is a module
>then blktap2 is too. Otherwise the following build error will occur:
>
>drivers/built-in.o: In function `blktap_prep_foreign':
>/home/horms/projects/xen/hg/linux-2.6.18-xen.hg/drivers/xen/blktap2/device.c:448:
>undefined reference to `blkback_pagemap_read'
>make: *** [.tmp_vmlinux1] Error 1
>
>Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>

NAK: blkback_pagemap_read() & Co don't even live in blkbk.ko,
they're in their own module, the config option for which gets auto-
selected. Perhaps you're not using an up-to-date tree?

Jan


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