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| author |   Lars Ellenberg <lars.ellenberg@linbit.com> | 2014-04-28 18:43:35 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@fb.com> | 2014-04-30 13:46:56 -0600 |
| commit | ec4a340789be16831ae96be5f7552238a7a6e903 (patch) | |
| tree | 5571ed3e41b1afaaf2633dc135e62351ed162aa8 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | drbd: Allow attaching of a newly created device to any backing device (diff) | |
| download | wireguard-linux-ec4a340789be16831ae96be5f7552238a7a6e903.tar.xz wireguard-linux-ec4a340789be16831ae96be5f7552238a7a6e903.zip | |
drbd: use list_first_entry_or_null in first_peer_device/first_connection
If there are no peer_devices or connections, I'd rather have NULL
than some "arbitrary" address pretending to point to a struct.
Helps to avoid hard to debug symptoms, in case we ever try to use
and dereference a drbd_connection or drbd_peer_device
where we in fact don't have any connection at all.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions