drbd: interval tree: make removing an "empty" interval a no-op

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Trying to remove an "empty" (just initialized, or "cleared") interval
from the tree, this results in an endless loop.

As we typically protect the tree with a spinlock_irq,
the result is a hung system.

Be nice to error cleanup code paths, ignore removal of empty intervals.

Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Link: https://lore.kernel.org/r/20230113123538.144276-8-christoph.boehmwalder@linbit.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Lars Ellenberg 2023-01-13 13:35:37 +01:00 • committed by Jens Axboe

parent 6d9be160df

commit 2990ca29f3

1 changed files with 4 additions and 0 deletions

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drivers/block/drbd/drbd_interval.c

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