| /* |
| * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. |
| * |
| * This file is released under the GPL. |
| */ |
| |
| #ifndef DM_BIO_RECORD_H |
| #define DM_BIO_RECORD_H |
| |
| #include <linux/bio.h> |
| |
| /* |
| * There are lots of mutable fields in the bio struct that get |
| * changed by the lower levels of the block layer. Some targets, |
| * such as multipath, may wish to resubmit a bio on error. The |
| * functions in this file help the target record and restore the |
| * original bio state. |
| */ |
| |
| struct dm_bio_details { |
| struct gendisk *bi_disk; |
| u8 bi_partno; |
| unsigned long bi_flags; |
| struct bvec_iter bi_iter; |
| }; |
| |
| static inline void dm_bio_record(struct dm_bio_details *bd, struct bio *bio) |
| { |
| bd->bi_disk = bio->bi_disk; |
| bd->bi_partno = bio->bi_partno; |
| bd->bi_flags = bio->bi_flags; |
| bd->bi_iter = bio->bi_iter; |
| } |
| |
| static inline void dm_bio_restore(struct dm_bio_details *bd, struct bio *bio) |
| { |
| bio->bi_disk = bd->bi_disk; |
| bio->bi_partno = bd->bi_partno; |
| bio->bi_flags = bd->bi_flags; |
| bio->bi_iter = bd->bi_iter; |
| } |
| |
| #endif |
