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dm: don't save and restore bi_private

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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>
This commit is contained in:
Mikulas Patocka
2015-11-25 16:03:31 -05:00
committed by Mike Snitzer
parent 086fbbbda9
commit fe3265b180
3 changed files with 2 additions and 12 deletions
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3
drivers/md/dm-cache-target.c
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@@ -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;
}
/*----------------------------------------------------------------*/