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drbd: rate limit an error message

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If we don't rate limit it, and you happen to log err level messages via
serial console, an IO error on a disconnected Primary may cause serious
unresponsiveness.

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 2010-10-19 12:08:13 +02:00 committed by Philipp Reisner
parent bc571b8cb9
commit fb2c7a10ee
1 changed files with 2 additions and 1 deletions
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3
drivers/block/drbd/drbd_req.c
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@ -813,7 +813,8 @@ static int drbd_make_request_common(struct drbd_conf *mdev, struct bio *bio)
mdev->state.conn >= C_CONNECTED));
if (!(local || remote) && !is_susp(mdev->state)) {
dev_err(DEV, "IO ERROR: neither local nor remote disk\n");
if (__ratelimit(&drbd_ratelimit_state))
dev_err(DEV, "IO ERROR: neither local nor remote disk\n");
goto fail_free_complete;
}