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drbd: fix if(); found by kbuild test robot 

Recently introduced al_begin_io_nonblock() was returning -EBUSY,
even when it should return -EWOULDBLOCK.

Impact:
A few spurious wake_up() calls in prepare_al_transaction_nonblock().

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
hifive-unleashed-5.1
Lars Ellenberg 2013-03-27 14:08:49 +01:00 committed by Jens Axboe
parent 3990e04df0
commit 0b6ef4164f
1 changed files with 1 additions and 1 deletions
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2
drivers/block/drbd/drbd_actlog.c
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@ -389,7 +389,7 @@ int drbd_al_begin_io_nonblock(struct drbd_conf *mdev, struct drbd_interval *i)
if (unlikely(tmp != NULL)) {
struct bm_extent *bm_ext = lc_entry(tmp, struct bm_extent, lce);
if (test_bit(BME_NO_WRITES, &bm_ext->flags)) {
if (!test_and_set_bit(BME_PRIORITY, &bm_ext->flags));
if (!test_and_set_bit(BME_PRIORITY, &bm_ext->flags))
return -EBUSY;
return -EWOULDBLOCK;
}