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drbd: announce FLUSH/FUA capability to upper layers

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In 8.4, we may have bios spanning two activity log extents.
Fixup drbd_al_begin_io() and drbd_al_complete_io() to deal with zero sized bios.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Lars Ellenberg
2012-07-30 09:00:54 +02:00
committed by Philipp Reisner
parent 58ffa580a7
commit 81a3537a97
4 changed files with 26 additions and 10 deletions
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drivers/block/drbd/drbd_req.c
-1
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@@ -1097,7 +1097,6 @@ int drbd_make_request(struct request_queue *q, struct bio *bio)
/*
* what we "blindly" assume:
*/
D_ASSERT(bio->bi_size > 0);
D_ASSERT(IS_ALIGNED(bio->bi_size, 512));
inc_ap_bio(mdev);