diff options
| author | Andreas Gruenbacher | 2011-02-03 18:42:08 +0100 |
|---|---|---|
| committer | Philipp Reisner | 2011-09-28 10:26:35 +0200 |
| commit | 43ae077d0a1e98dd13112646fe967565febf4fe7 (patch) | |
| tree | 1d37ba0f413c7a766415609290474bd365b26679 /drivers/block/drbd/drbd_receiver.c | |
| parent | drbd: Defer new writes when detecting conflicting writes (diff) | |
| download | kernel-qcow2-linux-43ae077d0a1e98dd13112646fe967565febf4fe7.tar.gz kernel-qcow2-linux-43ae077d0a1e98dd13112646fe967565febf4fe7.tar.xz kernel-qcow2-linux-43ae077d0a1e98dd13112646fe967565febf4fe7.zip | |
drbd: Make the peer_seq updating code more obvious
Make it more clear that update_peer_seq() is supposed to wake up the
seq_wait queue whenever the sequence number changes.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd/drbd_receiver.c')
| -rw-r--r-- | drivers/block/drbd/drbd_receiver.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index b063ca234462..bc5351df8073 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -1650,15 +1650,15 @@ static u32 seq_max(u32 a, u32 b) return seq_greater(a, b) ? a : b; } -static void update_peer_seq(struct drbd_conf *mdev, unsigned int new_seq) +static void update_peer_seq(struct drbd_conf *mdev, unsigned int peer_seq) { - unsigned int m; + unsigned int old_peer_seq; spin_lock(&mdev->peer_seq_lock); - m = seq_max(mdev->peer_seq, new_seq); - mdev->peer_seq = m; + old_peer_seq = mdev->peer_seq; + mdev->peer_seq = seq_max(mdev->peer_seq, peer_seq); spin_unlock(&mdev->peer_seq_lock); - if (m == new_seq) + if (old_peer_seq != peer_seq) wake_up(&mdev->seq_wait); } |