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SubjectRe: [PATCH 01/15] mm: poison struct page for ptlock

* Andrew Morton <> wrote:

> Andrew Morton <> wrote:
> >
> > Well plan B is to kill spinlock_t.break_lock.
> And plan C is to use a bit_spinlock() against page->flags.

please dont. Bit-spinlock is a PITA because it is non-debuggable and
non-preempt-friendly. (In fact in -rt i have completely eliminated
bit_spinlock(), because it's also such a PITA to type-encapsulate it

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