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| author | Mikulas Patocka <mpatocka@redhat.com> | 2014-03-04 18:24:49 -0500 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2014-03-27 16:56:24 -0400 |
| commit | bfc6d41cee53b2d02edc469fa459000a448a90ab (patch) | |
| tree | 240bde16ddcfcf33fc3cda54a9228641e1fe42b0 /drivers/md | |
| parent | d70ab4fb723cf7acfa656cb2ad1e75be7ed94bef (diff) | |
| download | linux-bfc6d41cee53b2d02edc469fa459000a448a90ab.tar.gz linux-bfc6d41cee53b2d02edc469fa459000a448a90ab.tar.bz2 linux-bfc6d41cee53b2d02edc469fa459000a448a90ab.zip | |
dm: stop using bi_private
Device mapper uses the bio structure's bi_private field as a pointer
to dm_target_io or dm_rq_clone_bio_info. But a bio structure is
embedded in the dm_target_io and dm_rq_clone_bio_info structures, so the
pointer to the structure that contains the bio can be found with the
container_of() macro.
Remove the use of bi_private and use container_of() instead.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index ef5750d21235..0d52f6ff2a1e 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -753,7 +753,7 @@ static void dec_pending(struct dm_io *io, int error) static void clone_endio(struct bio *bio, int error) { int r = 0; - struct dm_target_io *tio = bio->bi_private; + struct dm_target_io *tio = container_of(bio, struct dm_target_io, clone); struct dm_io *io = tio->io; struct mapped_device *md = tio->io->md; dm_endio_fn endio = tio->ti->type->end_io; @@ -787,7 +787,8 @@ static void clone_endio(struct bio *bio, int error) */ static void end_clone_bio(struct bio *clone, int error) { - struct dm_rq_clone_bio_info *info = clone->bi_private; + struct dm_rq_clone_bio_info *info = + container_of(clone, struct dm_rq_clone_bio_info, clone); struct dm_rq_target_io *tio = info->tio; struct bio *bio = info->orig; unsigned int nr_bytes = info->orig->bi_iter.bi_size; @@ -1113,7 +1114,6 @@ static void __map_bio(struct dm_target_io *tio) struct dm_target *ti = tio->ti; clone->bi_end_io = clone_endio; - clone->bi_private = tio; /* * Map the clone. If r == 0 we don't need to do @@ -1522,7 +1522,6 @@ static int dm_rq_bio_constructor(struct bio *bio, struct bio *bio_orig, info->orig = bio_orig; info->tio = tio; bio->bi_end_io = end_clone_bio; - bio->bi_private = info; return 0; } |