The patch titled
Documentation: fix block/biodoc.txt dma mapping description
has been removed from the -mm tree. Its filename was
documentation-fix-block-biodoctxt-dma-mapping-description.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: Documentation: fix block/biodoc.txt dma mapping description
From: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
- It looks incorrect to use blk_rq_map_sg with pci_map_page here about
DMA mappings. dma_map_sg?
- better to use dma_map_page instead of pci_map_page.
http://marc.info/?l=linux-kernel&m=126596737604808&w=2
Signed-off-by: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/block/biodoc.txt | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN Documentation/block/biodoc.txt~documentation-fix-block-biodoctxt-dma-mapping-description Documentation/block/biodoc.txt
--- a/Documentation/block/biodoc.txt~documentation-fix-block-biodoctxt-dma-mapping-description
+++ a/Documentation/block/biodoc.txt
@@ -1162,8 +1162,8 @@ where a driver received a request ala th
As mentioned, there is no virtual mapping of a bio. For DMA, this is
not a problem as the driver probably never will need a virtual mapping.
-Instead it needs a bus mapping (pci_map_page for a single segment or
-use blk_rq_map_sg for scatter gather) to be able to ship it to the driver. For
+Instead it needs a bus mapping (dma_map_page for a single segment or
+use dma_map_sg for scatter gather) to be able to ship it to the driver. For
PIO drivers (or drivers that need to revert to PIO transfer once in a
while (IDE for example)), where the CPU is doing the actual data
transfer a virtual mapping is needed. If the driver supports highmem I/O,
_
Patches currently in -mm which might be from fujita.tomonori@xxxxxxxxxxxxx are
origin.patch
linux-next.patch
scsi-add-__init-__exit-macros-to-ibmvstgtc.patch
ssb-add-dma_dev-to-ssb_device-structure.patch
b43legacy-replace-the-ssb_dma-api-with-the-generic-dma-api.patch
b43-replace-the-ssb_dma-api-with-the-generic-dma-api.patch
b44-replace-the-ssb_dma-api-with-the-generic-dma-api.patch
ssb-remove-the-ssb-dma-api.patch
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