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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-02 13:22:38 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-02 13:22:38 -0700 |
| commit | d975f309a8b250e67b66eabeb56be6989c783629 (patch) | |
| tree | 846cae85891024f7c45416d085df90d98ec2e51b /include | |
| parent | 52b084d31cbc8e90cb6fc1ac4061d9a24375c89d (diff) | |
| parent | f8bcbe62acd0e1ce9004b83e98a4af87ae385dcf (diff) | |
Merge branch 'for-4.3/sg' of git://git.kernel.dk/linux-block
Pull SG updates from Jens Axboe:
"This contains a set of scatter-gather related changes/fixes for 4.3:
- Add support for limited chaining of sg tables even for
architectures that do not set ARCH_HAS_SG_CHAIN. From Christoph.
- Add sg chain support to target_rd. From Christoph.
- Fixup open coded sg->page_link in crypto/omap-sham. From
Christoph.
- Fixup open coded crypto ->page_link manipulation. From Dan.
- Also from Dan, automated fixup of manual sg_unmark_end()
manipulations.
- Also from Dan, automated fixup of open coded sg_phys()
implementations.
- From Robert Jarzmik, addition of an sg table splitting helper that
drivers can use"
* 'for-4.3/sg' of git://git.kernel.dk/linux-block:
lib: scatterlist: add sg splitting function
scatterlist: use sg_phys()
crypto/omap-sham: remove an open coded access to ->page_link
scatterlist: remove open coded sg_unmark_end instances
crypto: replace scatterwalk_sg_chain with sg_chain
target/rd: always chain S/G list
scatterlist: allow limited chaining without ARCH_HAS_SG_CHAIN
Diffstat (limited to 'include')
| -rw-r--r-- | include/crypto/scatterwalk.h | 10 | ||||
| -rw-r--r-- | include/linux/scatterlist.h | 9 |
2 files changed, 6 insertions, 13 deletions
diff --git a/include/crypto/scatterwalk.h b/include/crypto/scatterwalk.h index 96670e7e7c14..35f99b68d037 100644 --- a/include/crypto/scatterwalk.h +++ b/include/crypto/scatterwalk.h @@ -25,14 +25,6 @@ #include <linux/scatterlist.h> #include <linux/sched.h> -static inline void scatterwalk_sg_chain(struct scatterlist *sg1, int num, - struct scatterlist *sg2) -{ - sg_set_page(&sg1[num - 1], (void *)sg2, 0, 0); - sg1[num - 1].page_link &= ~0x02; - sg1[num - 1].page_link |= 0x01; -} - static inline void scatterwalk_crypto_chain(struct scatterlist *head, struct scatterlist *sg, int chain, int num) @@ -43,7 +35,7 @@ static inline void scatterwalk_crypto_chain(struct scatterlist *head, } if (sg) - scatterwalk_sg_chain(head, num, sg); + sg_chain(head, num, sg); else sg_mark_end(head); } diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index 9b1ef0c820a7..556ec1ea2574 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -161,10 +161,6 @@ static inline void sg_set_buf(struct scatterlist *sg, const void *buf, static inline void sg_chain(struct scatterlist *prv, unsigned int prv_nents, struct scatterlist *sgl) { -#ifndef CONFIG_ARCH_HAS_SG_CHAIN - BUG(); -#endif - /* * offset and length are unused for chain entry. Clear them. */ @@ -251,6 +247,11 @@ struct scatterlist *sg_next(struct scatterlist *); struct scatterlist *sg_last(struct scatterlist *s, unsigned int); void sg_init_table(struct scatterlist *, unsigned int); void sg_init_one(struct scatterlist *, const void *, unsigned int); +int sg_split(struct scatterlist *in, const int in_mapped_nents, + const off_t skip, const int nb_splits, + const size_t *split_sizes, + struct scatterlist **out, int *out_mapped_nents, + gfp_t gfp_mask); typedef struct scatterlist *(sg_alloc_fn)(unsigned int, gfp_t); typedef void (sg_free_fn)(struct scatterlist *, unsigned int); |