[email protected] writes:
> From: Mohammad Shahid <[email protected]>
>
> The DTL buffer is allocated while holding dtl_global_lock, which
> is spinlock.
>
> GFP_KERNEL allow direct memory reclaim and may sleep. Combining
> GFP_KERNEL with GFP_ATOMIC does not remove the direct reclaim.
>
> Use GFP_ATOMIC alone to ensure the allocation does not sleep
> while the spinlock is held.
>
> The issue is reported by script coccinelle call_kern.cocci.
>
> Signed-off-by: Mohammad Shahid <[email protected]>
This make sense. However we should also add fixes tag and tag stable
so it gets backported to stable trees as well.
Fixes: 4708fba19ade ("powerpc/vpa_dtl: Add interface to expose vpa dtl counters
via perf")
Cc: [email protected]
LGTM, so feel free to add:
Reviewed-by: Ritesh Harjani (IBM) <[email protected]>
