Lars Ellenberg 8b45a5c8a1
drbd: a few more GFP_KERNEL -> GFP_NOIO ...
This has not yet been observed, but conceivably, when using GFP_KERNEL
allocations from drbd_md_sync(), drbd_flush_after_epoch() or
receive_SyncParam(), we could trigger additional IO to our own device,
or an other device in a criss-cross setup, and end up in a local
deadlock, or potentially a distributed deadlock in a criss-cross setup
involving the peer blocked in a similar way waiting for us to make
progress.
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 >
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