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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2016-07-12 08:18:00 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-07-18 12:35:50 +0300 |
| commit | ac02725812cb3a814cfe1fdc2a8a59db073e7e66 (patch) | |
| tree | 5480b15a94af14bd105e3981ece6a12898faeb14 /crypto/scatterwalk.c | |
| parent | 2ee732d57496b8365819dfb958bc1ff04fcd4cac (diff) | |
| download | linux-ac02725812cb3a814cfe1fdc2a8a59db073e7e66.tar.xz | |
crypto: scatterwalk - Inline start/map/done
This patch inlines the functions scatterwalk_start, scatterwalk_map
and scatterwalk_done as they're all tiny and mostly used by the block
cipher walker.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/scatterwalk.c')
| -rw-r--r-- | crypto/scatterwalk.c | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/crypto/scatterwalk.c b/crypto/scatterwalk.c index ddffbb3ee712..52ce17a3dd63 100644 --- a/crypto/scatterwalk.c +++ b/crypto/scatterwalk.c @@ -18,8 +18,6 @@ #include <linux/kernel.h> #include <linux/mm.h> #include <linux/module.h> -#include <linux/pagemap.h> -#include <linux/highmem.h> #include <linux/scatterlist.h> static inline void memcpy_dir(void *buf, void *sgdata, size_t nbytes, int out) @@ -30,47 +28,6 @@ static inline void memcpy_dir(void *buf, void *sgdata, size_t nbytes, int out) memcpy(dst, src, nbytes); } -void scatterwalk_start(struct scatter_walk *walk, struct scatterlist *sg) -{ - walk->sg = sg; - walk->offset = sg->offset; -} -EXPORT_SYMBOL_GPL(scatterwalk_start); - -void *scatterwalk_map(struct scatter_walk *walk) -{ - return kmap_atomic(scatterwalk_page(walk)) + - offset_in_page(walk->offset); -} -EXPORT_SYMBOL_GPL(scatterwalk_map); - -static void scatterwalk_pagedone(struct scatter_walk *walk, int out, - unsigned int more) -{ - if (out) { - struct page *page; - - page = sg_page(walk->sg) + ((walk->offset - 1) >> PAGE_SHIFT); - /* Test ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE first as - * PageSlab cannot be optimised away per se due to - * use of volatile pointer. - */ - if (ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE && !PageSlab(page)) - flush_dcache_page(page); - } - - if (more && walk->offset >= walk->sg->offset + walk->sg->length) - scatterwalk_start(walk, sg_next(walk->sg)); -} - -void scatterwalk_done(struct scatter_walk *walk, int out, int more) -{ - if (!more || walk->offset >= walk->sg->offset + walk->sg->length || - !(walk->offset & (PAGE_SIZE - 1))) - scatterwalk_pagedone(walk, out, more); -} -EXPORT_SYMBOL_GPL(scatterwalk_done); - void scatterwalk_copychunks(void *buf, struct scatter_walk *walk, size_t nbytes, int out) { |