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Commit 647c7db1 authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Alasdair G Kergon
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dm crypt: support flush 



Flush support for dm-crypt target.

Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent 374bf7e7

drivers/md/dm-crypt.c

+8 −0
Original line number Diff line number Diff line
@@ -1132,6 +1132,7 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) 
		goto bad_crypt_queue;

	}



	ti->num_flush_requests = 1;

	ti->private = cc;

	return 0;
@@ -1189,6 +1190,13 @@ static int crypt_map(struct dm_target *ti, struct bio *bio, 
		     union map_info *map_context)

{

	struct dm_crypt_io *io;

	struct crypt_config *cc;



	if (unlikely(bio_empty_barrier(bio))) {

		cc = ti->private;

		bio->bi_bdev = cc->dev->bdev;

		return DM_MAPIO_REMAPPED;

	}



	io = crypt_io_alloc(ti, bio, bio->bi_sector - ti->begin);