diff options
Diffstat (limited to 'sys/contrib/openzfs/include/sys/abd_impl.h')
| -rw-r--r-- | sys/contrib/openzfs/include/sys/abd_impl.h | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/sys/contrib/openzfs/include/sys/abd_impl.h b/sys/contrib/openzfs/include/sys/abd_impl.h index 40546d4af137..f88ea25e245d 100644 --- a/sys/contrib/openzfs/include/sys/abd_impl.h +++ b/sys/contrib/openzfs/include/sys/abd_impl.h @@ -21,6 +21,7 @@ /* * Copyright (c) 2014 by Chunwei Chen. All rights reserved. * Copyright (c) 2016, 2019 by Delphix. All rights reserved. + * Copyright (c) 2023, 2024, Klara Inc. */ #ifndef _ABD_IMPL_H @@ -38,12 +39,30 @@ typedef enum abd_stats_op { ABDSTAT_DECR /* Decrease abdstat values */ } abd_stats_op_t; -struct scatterlist; /* forward declaration */ +/* forward declarations */ +struct scatterlist; +struct page; struct abd_iter { /* public interface */ - void *iter_mapaddr; /* addr corresponding to iter_pos */ - size_t iter_mapsize; /* length of data valid at mapaddr */ + union { + /* for abd_iter_map()/abd_iter_unmap() */ + struct { + /* addr corresponding to iter_pos */ + void *iter_mapaddr; + /* length of data valid at mapaddr */ + size_t iter_mapsize; + }; + /* for abd_iter_page() */ + struct { + /* current page */ + struct page *iter_page; + /* offset of data in page */ + size_t iter_page_doff; + /* size of data in page */ + size_t iter_page_dsize; + }; + }; /* private */ abd_t *iter_abd; /* ABD being iterated through */ @@ -78,6 +97,7 @@ boolean_t abd_iter_at_end(struct abd_iter *); void abd_iter_advance(struct abd_iter *, size_t); void abd_iter_map(struct abd_iter *); void abd_iter_unmap(struct abd_iter *); +void abd_iter_page(struct abd_iter *); /* * Helper macros |