1 files changed, 0 insertions, 124 deletions
diff --git a/backport/compat/backport-3.11.c b/backport/compat/backport-3.11.c
deleted file mode 100644
index 7f9ff341..00000000
--- a/backport/compat/backport-3.11.c
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * Copyright (c) 2016 Intel Deutschland GmbH
- *
- * Backport functionality introduced in Linux 3.11.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/scatterlist.h>
-
-static bool sg_miter_get_next_page(struct sg_mapping_iter *miter)
-{
-	if (!miter->__remaining) {
-		struct scatterlist *sg;
-		unsigned long pgoffset;
-
-		if (!__sg_page_iter_next(&miter->piter))
-			return false;
-
-		sg = miter->piter.sg;
-		pgoffset = miter->piter.sg_pgoffset;
-
-		miter->__offset = pgoffset ? 0 : sg->offset;
-		miter->__remaining = sg->offset + sg->length -
-				(pgoffset << PAGE_SHIFT) - miter->__offset;
-		miter->__remaining = min_t(unsigned long, miter->__remaining,
-					   PAGE_SIZE - miter->__offset);
-	}
-
-	return true;
-}
-
-/**
- * sg_miter_skip - reposition mapping iterator
- * @miter: sg mapping iter to be skipped
- * @offset: number of bytes to plus the current location
- *
- * Description:
- *   Sets the offset of @miter to its current location plus @offset bytes.
- *   If mapping iterator @miter has been proceeded by sg_miter_next(), this
- *   stops @miter.
- *
- * Context:
- *   Don't care if @miter is stopped, or not proceeded yet.
- *   Otherwise, preemption disabled if the SG_MITER_ATOMIC is set.
- *
- * Returns:
- *   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)
-{
-	sg_miter_stop(miter);
-
-	while (offset) {
-		off_t consumed;
-
-		if (!sg_miter_get_next_page(miter))
-			return false;
-
-		consumed = min_t(off_t, offset, miter->__remaining);
-		miter->__offset += consumed;
-		miter->__remaining -= consumed;
-		offset -= consumed;
-	}
-
-	return true;
-}
-
-/**
- * sg_copy_buffer - Copy data between a linear buffer and an SG list
- * @sgl:		 The SG list
- * @nents:		 Number of SG entries
- * @buf:		 Where to copy from
- * @buflen:		 The number of bytes to copy
- * @skip:		 Number of bytes to skip before copying
- * @to_buffer:		 transfer direction (true == from an sg list to a
- *			 buffer, false == from a buffer to an sg list
- *
- * Returns the number of copied bytes.
- *
- **/
-size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents, void *buf,
-		      size_t buflen, off_t skip, bool to_buffer)
-{
-	unsigned int offset = 0;
-	struct sg_mapping_iter miter;
-	unsigned long flags;
-	unsigned int sg_flags = SG_MITER_ATOMIC;
-
-	if (to_buffer)
-		sg_flags |= SG_MITER_FROM_SG;
-	else
-		sg_flags |= SG_MITER_TO_SG;
-
-	sg_miter_start(&miter, sgl, nents, sg_flags);
-
-	if (!sg_miter_skip(&miter, skip))
-		return false;
-
-	local_irq_save(flags);
-
-	while (sg_miter_next(&miter) && offset < buflen) {
-		unsigned int len;
-
-		len = min(miter.length, buflen - offset);
-
-		if (to_buffer)
-			memcpy(buf + offset, miter.addr, len);
-		else
-			memcpy(miter.addr, buf + offset, len);
-
-		offset += len;
-	}
-
-	sg_miter_stop(&miter);
-
-	local_irq_restore(flags);
-	return offset;
-}
-EXPORT_SYMBOL_GPL(sg_copy_buffer);