walk_in->offset == walk_out->offset;
}
-static inline int scatterwalk_across_pages(struct scatter_walk *walk,
- unsigned int nbytes)
+static inline unsigned int scatterwalk_clamp(struct scatter_walk *walk,
+ unsigned int nbytes)
{
- return nbytes > walk->len_this_page;
+ return nbytes > walk->len_this_page ? walk->len_this_page : nbytes;
}
static inline void scatterwalk_advance(struct scatter_walk *walk,
walk->len_this_segment -= nbytes;
}
+static inline unsigned int scatterwalk_aligned(struct scatter_walk *walk,
+ unsigned int alignmask)
+{
+ return !(walk->offset & alignmask);
+}
+
void scatterwalk_start(struct scatter_walk *walk, struct scatterlist *sg);
int scatterwalk_copychunks(void *buf, struct scatter_walk *walk, size_t nbytes, int out);
void scatterwalk_map(struct scatter_walk *walk, int out);