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| author | Maxim Levitsky <maximlevitsky@gmail.com> | 2012-09-27 12:45:28 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2012-09-27 12:45:28 +0200 |
| commit | 2e484610296b25f0a04b516bc144a00731d1d845 (patch) | |
| tree | d45467ec0b7c2446652e685b270427183471a5ad /include | |
| parent | c2b1ad800b66f62105a7fd250604d72e07202e66 (diff) | |
| download | linux-2e484610296b25f0a04b516bc144a00731d1d845.tar.gz linux-2e484610296b25f0a04b516bc144a00731d1d845.tar.bz2 linux-2e484610296b25f0a04b516bc144a00731d1d845.zip | |
scatterlist: add sg_nents
Useful helper to know the number of entries in scatterlist.
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Cc: Alex Dubov <oakad@yahoo.com>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/scatterlist.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index 7b600da9a635..4bd6c06eb28e 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -201,6 +201,7 @@ static inline void *sg_virt(struct scatterlist *sg) return page_address(sg_page(sg)) + sg->offset; } +int sg_nents(struct scatterlist *sg); struct scatterlist *sg_next(struct scatterlist *); struct scatterlist *sg_last(struct scatterlist *s, unsigned int); void sg_init_table(struct scatterlist *, unsigned int); |