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| author | Eric W. Biederman <ebiederm@xmission.com> | 2020-12-03 14:11:13 -0600 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-12-09 17:08:42 +0100 |
| commit | 31784cff7ee073b34d6eddabb95e3be2880a425c (patch) | |
| tree | d1954eccd5b14129437e00b3d03e094a5dae7758 /Documentation/fb/metronomefb.rst | |
| parent | 0f9368b5bf6db0c04afc5454b1be79022a681615 (diff) | |
| download | linux-31784cff7ee073b34d6eddabb95e3be2880a425c.tar.bz2 | |
rwsem: Implement down_read_interruptible
In preparation for converting exec_update_mutex to a rwsem so that
multiple readers can execute in parallel and not deadlock, add
down_read_interruptible. This is needed for perf_event_open to be
converted (with no semantic changes) from working on a mutex to
wroking on a rwsem.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/87k0tybqfy.fsf@x220.int.ebiederm.org
Diffstat (limited to 'Documentation/fb/metronomefb.rst')
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