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| author | Zhang Qilong <zhangqilong3@huawei.com> | 2020-11-10 17:29:32 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-11-16 09:37:01 -0800 |
| commit | dd8088d5a8969dc2b42f71d7bc01c25c61a78066 (patch) | |
| tree | 6f52ae44199e5ea0a6d1eadf08c43228b86a3274 /mm/page_counter.c | |
| parent | e2142ef266c8a25e635ae4319254d7c01c84deb7 (diff) | |
| download | linux-dd8088d5a8969dc2b42f71d7bc01c25c61a78066.tar.bz2 | |
PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter
In many case, we need to check return value of pm_runtime_get_sync, but
it brings a trouble to the usage counter processing. Many callers forget
to decrease the usage counter when it failed, which could resulted in
reference leak. It has been discussed a lot[0][1]. So we add a function
to deal with the usage counter for better coding.
[0]https://lkml.org/lkml/2020/6/14/88
[1]https://patchwork.ozlabs.org/project/linux-tegra/list/?series=178139
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'mm/page_counter.c')
0 files changed, 0 insertions, 0 deletions