SCHED: add some "wait..on_bit...timeout()" interfaces.
In commit c1221321 sched: Allow wait_on_bit_action() functions to support a timeout I suggested that a "wait_on_bit_timeout()" interface would not meet my need. This isn't true - I was just over-engineering. Including a 'private' field in wait_bit_key instead of a focused "timeout" field was just premature generalization. If some other use is ever found, it can be generalized or added later. So this patch renames "private" to "timeout" with a meaning "stop waiting when "jiffies" reaches or passes "timeout", and adds two of the many possible wait..bit..timeout() interfaces: wait_on_page_bit_killable_timeout(), which is the one I want to use, and out_of_line_wait_on_bit_timeout() which is a reasonably general example. Others can be added as needed. Acked-by:Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
NeilBrown <neilb@suse.de> Acked-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
Trond Myklebust <trond.myklebust@primarydata.com>
parent
e87b4c7a
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