Messages in this thread | | | Date | Tue, 26 Jan 2021 10:24:16 +0100 | From | Petr Vorel <> | Subject | Re: [PATCH v3 1/1] loop: scale loop device by introducing per device lock |
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Hi,
> Currently, loop device has only one global lock: > loop_ctl_mutex.
> This becomes hot in scenarios where many loop devices are used.
> Scale it by introducing per-device lock: lo_mutex that protects the > fields in struct loop_device. Keep loop_ctl_mutex to protect global > data such as loop_index_idr, loop_lookup, loop_add.
> Lock ordering: loop_ctl_mutex > lo_mutex.
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Kind regards, Petr
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