aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/scatterlist.h
diff options
context:
space:
mode:
authorThomas Gleixner <tglx@linutronix.de>2017-11-23 16:29:05 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-11-23 16:29:05 +0100
commit866c9b94ef968445c52214b3748ecc52a8491bca (patch)
tree1fd073acb9be8e89e77b35c41e2964ac6feabee6 /include/linux/scatterlist.h
parenttimekeeping: Remove CONFIG_GENERIC_TIME_VSYSCALL_OLD (diff)
parenttreewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts (diff)
downloadlinux-dev-866c9b94ef968445c52214b3748ecc52a8491bca.tar.xz
linux-dev-866c9b94ef968445c52214b3748ecc52a8491bca.zip
Merge tag 'for-linus-timers-conversion-final-v4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux into timers/urgent
Pull the last batch of manual timer conversions from Kees Cook: - final batch of "non trivial" timer conversions (multi-tree dependencies, things Coccinelle couldn't handle, etc). - treewide conversions via Coccinelle, in 4 steps: - DEFINE_TIMER() functions converted to struct timer_list * argument - init_timer() -> setup_timer() - setup_timer() -> timer_setup() - setup_timer() -> timer_setup() (with a single embedded structure) - deprecated timer API removals (init_timer(), setup_*timer()) - finalization of new API (remove global casts)
Diffstat (limited to 'include/linux/scatterlist.h')
-rw-r--r--include/linux/scatterlist.h17
1 files changed, 13 insertions, 4 deletions
diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h
index d87dfa41142d..b7c83254c566 100644
--- a/include/linux/scatterlist.h
+++ b/include/linux/scatterlist.h
@@ -22,6 +22,12 @@ struct scatterlist {
};
/*
+ * Since the above length field is an unsigned int, below we define the maximum
+ * length in bytes that can be stored in one scatterlist entry.
+ */
+#define SCATTERLIST_MAX_SEGMENT (UINT_MAX & PAGE_MASK)
+
+/*
* These macros should be used after a dma_map_sg call has been done
* to get bus addresses of each of the SG entries and their lengths.
* You should only work with the number of sg entries dma_map_sg
@@ -262,10 +268,13 @@ void sg_free_table(struct sg_table *);
int __sg_alloc_table(struct sg_table *, unsigned int, unsigned int,
struct scatterlist *, gfp_t, sg_alloc_fn *);
int sg_alloc_table(struct sg_table *, unsigned int, gfp_t);
-int sg_alloc_table_from_pages(struct sg_table *sgt,
- struct page **pages, unsigned int n_pages,
- unsigned long offset, unsigned long size,
- gfp_t gfp_mask);
+int __sg_alloc_table_from_pages(struct sg_table *sgt, struct page **pages,
+ unsigned int n_pages, unsigned int offset,
+ unsigned long size, unsigned int max_segment,
+ gfp_t gfp_mask);
+int sg_alloc_table_from_pages(struct sg_table *sgt, struct page **pages,
+ unsigned int n_pages, unsigned int offset,
+ unsigned long size, gfp_t gfp_mask);
size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents, void *buf,
size_t buflen, off_t skip, bool to_buffer);