path: root/.clang-format
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authorJason Gunthorpe <>2019-01-04 11:40:21 -0700
committerJason Gunthorpe <>2019-02-11 15:02:33 -0700
commitd901b2760dc6cd5fbbf2eac31d71d94baa6c4aef (patch)
tree6598a5b011cea1bcdf160c2be9fd4e677d387e2b /.clang-format
parentf368ff188ae4b3ef6f740a15999ea0373261b619 (diff)
lib/scatterlist: Provide a DMA page iterator
Commit 2db76d7c3c6d ("lib/scatterlist: sg_page_iter: support sg lists w/o backing pages") introduced the sg_page_iter_dma_address() function without providing a way to use it in the general case. If the sg_dma_len() is not equal to the sg length callers cannot safely use the for_each_sg_page/sg_page_iter_dma_address combination. Resolve this API mistake by providing a DMA specific iterator, for_each_sg_dma_page(), that uses the right length so sg_page_iter_dma_address() works as expected with all sglists. A new iterator type is introduced to provide compile-time safety against wrongly mixing accessors and iterators. Acked-by: Christoph Hellwig <> (for scatterlist) Acked-by: Thomas Hellstrom <> Acked-by: Sakari Ailus <> (ipu3-cio2) Signed-off-by: Jason Gunthorpe <>
Diffstat (limited to '.clang-format')
1 files changed, 1 insertions, 0 deletions
diff --git a/.clang-format b/.clang-format
index bc2ffb2a0b53..335ce29ab813 100644
--- a/.clang-format
+++ b/.clang-format
@@ -240,6 +240,7 @@ ForEachMacros:
- 'for_each_set_bit'
- 'for_each_set_bit_from'
- 'for_each_sg'
+ - 'for_each_sg_dma_page'
- 'for_each_sg_page'
- 'for_each_sibling_event'
- '__for_each_thread'