dm crypt: disable barriers
Disable barriers in dm-crypt because of current workqueue processing can reorder requests. This must be addresed later but for now disabling barriers is needed to prevent data corruption. Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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6ad36fe2b4
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9c89f8be1a
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@ -954,6 +954,9 @@ static int crypt_map(struct dm_target *ti, struct bio *bio,
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struct crypt_config *cc = ti->private;
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struct crypt_config *cc = ti->private;
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struct crypt_io *io;
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struct crypt_io *io;
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if (bio_barrier(bio))
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return -EOPNOTSUPP;
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io = mempool_alloc(cc->io_pool, GFP_NOIO);
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io = mempool_alloc(cc->io_pool, GFP_NOIO);
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io->target = ti;
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io->target = ti;
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io->base_bio = bio;
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io->base_bio = bio;
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