diff options
Diffstat (limited to 'tools/virtio/linux/scatterlist.h')
| -rw-r--r-- | tools/virtio/linux/scatterlist.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/virtio/linux/scatterlist.h b/tools/virtio/linux/scatterlist.h index b2cf7d0f6133..68c9e2adc996 100644 --- a/tools/virtio/linux/scatterlist.h +++ b/tools/virtio/linux/scatterlist.h @@ -125,6 +125,22 @@ static inline void sg_mark_end(struct scatterlist *sg) sg->page_link &= ~0x01; } +/** + * sg_unmark_end - Undo setting the end of the scatterlist + * @sg: SG entryScatterlist + * + * Description: + * Removes the termination marker from the given entry of the scatterlist. + * + **/ +static inline void sg_unmark_end(struct scatterlist *sg) +{ +#ifdef CONFIG_DEBUG_SG + BUG_ON(sg->sg_magic != SG_MAGIC); +#endif + sg->page_link &= ~0x02; +} + static inline struct scatterlist *sg_next(struct scatterlist *sg) { #ifdef CONFIG_DEBUG_SG |