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authorDavid Howells <dhowells@redhat.com>2009-02-12 10:40:05 +0000
committerDavid Woodhouse <David.Woodhouse@intel.com>2009-03-24 09:01:08 +0000
commit6e232cfce35a20a8702d9ac7709d35030c1b3271 (patch)
tree734facadf7ecfc120196a257f8e4e34d31d69a49 /fs/romfs/super.c
parent402d326519c1a4859c527702383f4e60f606ef52 (diff)
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NOMMU: Add support for direct mapping through mtdconcat if possible
Add support for direct mapping through mtdconcat, if possible, by attaching the samebacking_dev_info structure to the master. It has some restrictions: (1) It won't permit direct mapping of concatenated devices that have differing BDIs. (2) It doesn't support maps that span the 'gap' between devices, although it possibly could if the devices spanned across return compatible (ie. contiguous) addresses from their get_unmapped_area() ops. Signed-off-by: Gavin Lambert <gavinl@compacsort.com> Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Bernd Schmidt <bernd.schmidt@analog.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'fs/romfs/super.c')
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