Eric Lee / smarc-ti-linux-kernel

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Commit 0d6077f8b48ed2dce8f2466a76c0d574a3b4dbe9

Authored by Ming Lei
Committed by Greg Kroah-Hartman
1 parent e05a1fd946
Exists in master and in 16 other branches dlt-processor-sdk-linux-03.00.00.04, processor-sdk-linux-01.00.00, processor-sdk-linux-02.00.01, smarc-ti-linux-3.14.y, smarc-ti-linux-3.15.y, smarc-ti-lsk-linux-4.1.y, smarct3x-processor-sdk-04.01.00.06, smarct3x-processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-03.00.00.04, smarct4x-800-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-04.01.00.06, smarct4x-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-linux-03.00.00.04, ti-linux-3.14.y, ti-linux-3.15.y, ti-lsk-linux-4.1.y

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 <akpm@linux-foundation.org>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Reviewed-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Showing 2 changed files with 3 additions and 1 deletions Side-by-side Diff

include/linux/scatterlist.h
Diff comments   View file @ 0d6077f
... ... @@ -345,6 +345,7 @@
345 345  
346 346 void sg_miter_start(struct sg_mapping_iter *miter, struct scatterlist *sgl,
347 347 unsigned int nents, unsigned int flags);
  348 +bool sg_miter_skip(struct sg_mapping_iter *miter, off_t offset);
348 349 bool sg_miter_next(struct sg_mapping_iter *miter);
349 350 void sg_miter_stop(struct sg_mapping_iter *miter);
350 351  
... ... @@ -495,7 +495,7 @@
495 495 * true if @miter contains the valid mapping. false if end of sg
496 496 * list is reached.
497 497 */
498   -static bool sg_miter_skip(struct sg_mapping_iter *miter, off_t offset)
  498 +bool sg_miter_skip(struct sg_mapping_iter *miter, off_t offset)
499 499 {
500 500 sg_miter_stop(miter);
501 501  
... ... @@ -513,6 +513,7 @@
513 513  
514 514 return true;
515 515 }
  516 +EXPORT_SYMBOL(sg_miter_skip);
516 517  
517 518 /**
518 519 * sg_miter_next - proceed mapping iterator to the next mapping