/* * 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