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| author | Philipp Reisner <philipp.reisner@linbit.com> | 2011-01-17 22:27:30 +0300 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2011-03-10 13:45:42 +0300 |
| commit | 6a35c45f890dc18c5527ac501b308058118f20e7 (patch) | |
| tree | 627c73d972af6905f2ab77131e4232c62d31a553 /drivers/block/drbd/drbd_main.c | |
| parent | 2deb8336d04106f215c21ad1b029e78d12033d02 (diff) | |
| download | linux-6a35c45f890dc18c5527ac501b308058118f20e7.tar.xz | |
drbd: Ensure that an epoch contains only requests of one kind
The assert in drbd_req.c:755 forces us to have only requests of
one kind in an epoch. The two kinds we distinguish here are:
local-only or mirrored.
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_main.c')
| -rw-r--r-- | drivers/block/drbd/drbd_main.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index 1061b9fff2b0..34ee8e44a751 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -1261,9 +1261,14 @@ __drbd_set_state(struct drbd_conf *mdev, union drbd_state ns, if (os.conn < C_CONNECTED && ns.conn >= C_CONNECTED) drbd_resume_al(mdev); - if (os.conn == C_AHEAD && ns.conn != C_AHEAD) + /* Start a new epoch in case we start to mirror write requests */ + if (!drbd_should_do_remote(os) && drbd_should_do_remote(ns)) tl_forget(mdev); + /* Do not add local-only requests to an epoch with mirrored requests */ + if (drbd_should_do_remote(os) && !drbd_should_do_remote(ns)) + set_bit(CREATE_BARRIER, &mdev->flags); + ascw = kmalloc(sizeof(*ascw), GFP_ATOMIC); if (ascw) { ascw->os = os; |