md/raid5-ppl: Fix invalid context sleep in ppl_io_unit_finished() on PREEMPT_RT#228
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md/raid5-ppl: Fix invalid context sleep in ppl_io_unit_finished() on PREEMPT_RT#228kpd-daemon[bot] wants to merge 1 commit into
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…PREEMPT_RT The function ppl_io_unit_finished() uses a local_irq_save()/spin_lock() sequence. On a PREEMPT_RT enabled kernel, spin_lock() can sleep. Calling it with interrupts disabled creates an atomic context where sleeping is forbidden. Ensuring that the interrupt state is managed atomically with the lock itself. The change is applied to both the 'log->io_list_lock' and 'ppl_conf->no_mem_stripes_lock' critical sections within the function. Signed-off-by: Yunseong Kim <ysk@kzalloc.com>
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Upstream branch: c17fb54 |
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Pull request for series with
subject: md/raid5-ppl: Fix invalid context sleep in ppl_io_unit_finished() on PREEMPT_RT
version: 1
url: https://patchwork.kernel.org/project/linux-raid/list/?series=992260