diff options
| author | Mikulas Patocka <mpatocka@redhat.com> | 2015-11-25 16:03:31 -0500 |
|---|---|---|
| committer | Mattias Nissler <mnissler@google.com> | 2016-07-20 16:18:29 +0200 |
| commit | d5aa039fdc21dc5b536fb54bfd3d510974fbb80e (patch) | |
| tree | c48b65f275c31e29f3406a14a67325bd01d29df0 | |
| parent | 27560ffbde8d8c3fa338f1ea7d5e9882cb96e008 (diff) | |
| download | v4.4-d5aa039fdc21dc5b536fb54bfd3d510974fbb80e.tar.gz | |
UPSTREAM: dm: don't save and restore bi_private
Device mapper used the field bi_private to point to dm_target_io. However,
since kernel 3.15, the bi_private field is unused, and so the targets do
not need to save and restore this field.
This patch removes code that saves and restores bi_private from dm-cache,
dm-snapshot and dm-verity.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Bug: None
Patchset: dm-verity
Signed-off-by: Mattias Nissler <mnissler@google.com>
Change-Id: I918dae5fd4c1fd166efa80ccd8ffa7803216f2b3
| -rw-r--r-- | drivers/md/dm-cache-target.c | 3 | ||||
| -rw-r--r-- | drivers/md/dm-snap.c | 6 | ||||
| -rw-r--r-- | drivers/md/dm-verity.c | 5 |
3 files changed, 2 insertions, 12 deletions
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 515f83e7d9ab..bb9b92ebbf8e 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -118,14 +118,12 @@ static void iot_io_end(struct io_tracker *iot, sector_t len) */ struct dm_hook_info { bio_end_io_t *bi_end_io; - void *bi_private; }; static void dm_hook_bio(struct dm_hook_info *h, struct bio *bio, bio_end_io_t *bi_end_io, void *bi_private) { h->bi_end_io = bio->bi_end_io; - h->bi_private = bio->bi_private; bio->bi_end_io = bi_end_io; bio->bi_private = bi_private; @@ -134,7 +132,6 @@ static void dm_hook_bio(struct dm_hook_info *h, struct bio *bio, static void dm_unhook_bio(struct dm_hook_info *h, struct bio *bio) { bio->bi_end_io = h->bi_end_io; - bio->bi_private = h->bi_private; } /*----------------------------------------------------------------*/ diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index e108deebbaaa..e4d1bafe78c1 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -207,7 +207,6 @@ struct dm_snap_pending_exception { */ struct bio *full_bio; bio_end_io_t *full_bio_end_io; - void *full_bio_private; }; /* @@ -1495,10 +1494,8 @@ out: snapshot_bios = bio_list_get(&pe->snapshot_bios); origin_bios = bio_list_get(&pe->origin_bios); full_bio = pe->full_bio; - if (full_bio) { + if (full_bio) full_bio->bi_end_io = pe->full_bio_end_io; - full_bio->bi_private = pe->full_bio_private; - } increment_pending_exceptions_done_count(); up_write(&s->lock); @@ -1604,7 +1601,6 @@ static void start_full_bio(struct dm_snap_pending_exception *pe, pe->full_bio = bio; pe->full_bio_end_io = bio->bi_end_io; - pe->full_bio_private = bio->bi_private; callback_data = dm_kcopyd_prepare_callback(s->kcopyd_client, copy_callback, pe); diff --git a/drivers/md/dm-verity.c b/drivers/md/dm-verity.c index ccf41886ebcf..9e8891507c1c 100644 --- a/drivers/md/dm-verity.c +++ b/drivers/md/dm-verity.c @@ -83,9 +83,8 @@ struct dm_verity { struct dm_verity_io { struct dm_verity *v; - /* original values of bio->bi_end_io and bio->bi_private */ + /* original value of bio->bi_end_io */ bio_end_io_t *orig_bi_end_io; - void *orig_bi_private; sector_t block; unsigned n_blocks; @@ -453,7 +452,6 @@ static void verity_finish_io(struct dm_verity_io *io, int error) struct bio *bio = dm_bio_from_per_bio_data(io, v->ti->per_bio_data_size); bio->bi_end_io = io->orig_bi_end_io; - bio->bi_private = io->orig_bi_private; bio->bi_error = error; bio_endio(bio); @@ -566,7 +564,6 @@ static int verity_map(struct dm_target *ti, struct bio *bio) io = dm_per_bio_data(bio, ti->per_bio_data_size); io->v = v; io->orig_bi_end_io = bio->bi_end_io; - io->orig_bi_private = bio->bi_private; io->block = bio->bi_iter.bi_sector >> (v->data_dev_block_bits - SECTOR_SHIFT); io->n_blocks = bio->bi_iter.bi_size >> v->data_dev_block_bits; |