Hi!
> NFS calls the freezable helpers with locks held, which is unsafe
> and caused lockdep warnings when 6aa9707 "lockdep: check that no
> locks held at freeze time" was applied (reverted in dbf520a).
> Add new *_unsafe versions of the helpers that will not run the
> lockdep test when 6aa9707 is reapplied, and call them from NFS.
>
> Signed-off-by: Colin Cross <ccr...@android.com>
Looks mostly good.
> @@ -152,6 +169,14 @@ static inline bool freezer_should_skip(struct
> task_struct *p)
> freezer_count(); \
> })
>
> +/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
> +#define freezable_schedule_unsafe() \
> +({ \
> + freezer_do_not_count(); \
> + schedule(); \
> + freezer_count_unsafe(); \
> +})
> +
Make it inline function? :-). Add short explanation why it is good
idea?
> +/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
> +#define freezable_schedule_timeout_killable_unsafe(timeout) \
> +({ \
> + long __retval; \
> + freezer_do_not_count(); \
> + __retval = schedule_timeout_killable(timeout); \
> + freezer_count_unsafe(); \
> + __retval; \
> +})
Function too?
Pavel
--
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http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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