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cgroup: Also set io.bfq.weight
Current kernels with BFQ scheduler do not yet set their IO weight through "io.weight" but through "io.bfq.weight" (using a slightly different interface supporting only default weights, not per-device weights). This commit enables "IOWeight=" to just to that. This patch may be dropped at some time later. Github-Link: https://github.com/systemd/systemd/issues/7057 Signed-off-by: Kai Krakow <kai@kaishome.de>
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@ -429,6 +429,9 @@ CHANGES WITH 243 in spe:
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option that permits selecting the timout how long to wait for a
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device with an encryption key before asking for the password.
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* IOWeight= has learnt to properly set the IO weight when using the
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BFQ scheduler officially found in kernels 5.0+.
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Contributions from: Aaron Barany, Adrian Bunk, Alan Jenkins, Andrej
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Valek, Anita Zhang, Arian van Putten, Balint Reczey, Bastien Nocera,
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Ben Boeckel, Benjamin Robin, camoz, Chen Qi, Chris Chiu, Chris Down,
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@ -1063,6 +1063,11 @@ static void cgroup_context_apply(
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xsprintf(buf, "default %" PRIu64 "\n", weight);
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(void) set_attribute_and_warn(u, "io", "io.weight", buf);
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/* FIXME: drop this when distro kernels properly support BFQ through "io.weight"
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* See also: https://github.com/systemd/systemd/pull/13335 */
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xsprintf(buf, "%" PRIu64 "\n", weight);
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(void) set_attribute_and_warn(u, "io", "io.bfq.weight", buf);
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if (has_io) {
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CGroupIODeviceLatency *latency;
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CGroupIODeviceLimit *limit;
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