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rqspinlock: Annotate rqspinlock lock acquiring functions with __must_check #6409

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rqspinlock: Annotate rqspinlock lock acquiring functions with __must_check #6409

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subject: rqspinlock: Annotate rqspinlock lock acquiring functions with __must_check
version: 2
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=1026504

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Upstream branch: 8c868a3
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Upstream branch: 8f6ddc0
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Upstream branch: 5262cb2
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=1026504
version: 2

@ameryhung
rqspinlock: Annotate rqspinlock lock acquiring functions with __must_…
7cdb26d 
…check

Locking a resilient queued spinlock can fail when deadlock or timeout
happen. Mark the lock acquring functions with __must_check to make sure
callers always handle the returned error.

Suggested-by: Andrii Nakryiko <[email protected]>
Acked-by: Kumar Kartikeya Dwivedi <[email protected]>
Signed-off-by: Amery Hung <[email protected]>
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kernel-patches-daemon-bpf-rc bot commented Nov 26, 2025

Upstream branch: 688b745
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=1026504
version: 2

@ameryhung
rqspinlock: Handle return of raw_res_spin_lock{_irqsave} in locktorture
ebb10cf 
Return errors from raw_res_spin_lock{_irqsave}() to writelock(). This is
simply to silence the unused result warning. lock_torture_writer()
currently does not handle errors returned from writelock(). This aligns
with the existing torture test for ww_mutex.

Signed-off-by: Amery Hung <[email protected]>
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