pwm: Mark all devices as "might sleep"

[firefly-linux-kernel-4.4.55.git] / drivers / md / dm-crypt.c

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 3147c8d09ea84a0a76d0fd7ead35931a89e29aed..51eda7235e32095557e968cb2517db13d91d3037 100644 (file)
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1920,6 +1920,13 @@ static int crypt_map(struct dm_target *ti, struct bio *bio)
                return DM_MAPIO_REMAPPED;
        }
 
+       /*
+        * Check if bio is too large, split as needed.
+        */
+       if (unlikely(bio->bi_iter.bi_size > (BIO_MAX_PAGES << PAGE_SHIFT)) &&
+           bio_data_dir(bio) == WRITE)
+               dm_accept_partial_bio(bio, ((BIO_MAX_PAGES << PAGE_SHIFT) >> SECTOR_SHIFT));
+
        io = dm_per_bio_data(bio, cc->per_bio_data_size);
        crypt_io_init(io, cc, bio, dm_target_offset(ti, bio->bi_iter.bi_sector));
        io->ctx.req = (struct ablkcipher_request *)(io + 1);