From: Ming Lei Date: Tue, 26 Nov 2013 04:43:37 +0000 (+0800) Subject: lib/scatterlist: export sg_miter_skip() X-Git-Tag: v3.14-rc1~148^2~94^2~25 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0d6077f8b48ed2dce8f2466a76c0d574a3b4dbe9;p=kernel%2Fkernel-generic.git lib/scatterlist: export sg_miter_skip() sg_copy_buffer() can't meet demand for some drrivers(such usb mass storage), so we have to use the sg_miter_* APIs to access sg buffer, then need export sg_miter_skip() for these drivers. The API is needed for converting to sg_miter_* APIs in USB storage driver for accessing sg buffer. Acked-by: Andrew Morton Cc: FUJITA Tomonori Cc: Jens Axboe Signed-off-by: Ming Lei Reviewed-by: Tejun Heo Signed-off-by: Greg Kroah-Hartman --- diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index adae88f..a964f72 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -345,6 +345,7 @@ struct sg_mapping_iter { void sg_miter_start(struct sg_mapping_iter *miter, struct scatterlist *sgl, unsigned int nents, unsigned int flags); +bool sg_miter_skip(struct sg_mapping_iter *miter, off_t offset); bool sg_miter_next(struct sg_mapping_iter *miter); void sg_miter_stop(struct sg_mapping_iter *miter); diff --git a/lib/scatterlist.c b/lib/scatterlist.c index d16fa29..3a8e8e8 100644 --- a/lib/scatterlist.c +++ b/lib/scatterlist.c @@ -495,7 +495,7 @@ static bool sg_miter_get_next_page(struct sg_mapping_iter *miter) * true if @miter contains the valid mapping. false if end of sg * list is reached. */ -static bool sg_miter_skip(struct sg_mapping_iter *miter, off_t offset) +bool sg_miter_skip(struct sg_mapping_iter *miter, off_t offset) { sg_miter_stop(miter); @@ -513,6 +513,7 @@ static bool sg_miter_skip(struct sg_mapping_iter *miter, off_t offset) return true; } +EXPORT_SYMBOL(sg_miter_skip); /** * sg_miter_next - proceed mapping iterator to the next mapping