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| author | Johannes Weiner <hannes@cmpxchg.org> | 2009-06-16 15:32:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-16 19:47:40 -0700 |
| commit | 3b6748e2dd69906af3835db4dc9d1c8a3ee4c68c (patch) | |
| tree | 5d5476844f8e29e31684ce8ccf7e163ab3182ad6 /drivers/media/video/videobuf-dma-contig.c | |
| parent | 03668a4debf4f50de55c34b6e66dae63e1c73716 (diff) | |
| download | kernel_samsung_smdk4412-3b6748e2dd69906af3835db4dc9d1c8a3ee4c68c.tar.gz kernel_samsung_smdk4412-3b6748e2dd69906af3835db4dc9d1c8a3ee4c68c.tar.bz2 kernel_samsung_smdk4412-3b6748e2dd69906af3835db4dc9d1c8a3ee4c68c.zip | |
mm: introduce follow_pfn()
Analoguous to follow_phys(), add a helper that looks up the PFN at a
user virtual address in an IO mapping or a raw PFN mapping.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Christoph Hellwig <hch@infradead.org>
Acked-by: Magnus Damm <magnus.damm@gmail.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/media/video/videobuf-dma-contig.c')
0 files changed, 0 insertions, 0 deletions