Messages in this thread | | | Date | Fri, 4 Feb 2000 11:56:09 -0800 | From | Richard Henderson <> | Subject | Re: 2.3.42 alpha updates |
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On Fri, Feb 04, 2000 at 08:42:15PM +0100, Manfred Spraul wrote: > Many functions such as try_to_swap_out() call flush_tlb_xy() while they > own a spinlock (eg. mm->page_table_lock).
Really? Would you show me the call path from the spin lock aquire to try_to_swap_out? I don't see it.
I do see
* NOTE! If it sleeps, it *must* return 1 to make sure we * don't continue with the swap-out. Otherwise we may be * using a process that no longer actually exists (it might * have died while we slept).
attached to try_to_swap_out, so that's probably enough not to call schedule, but I don't see any such spinlock held. Moreover, the comment would seem to indicate it _is_ legal to sleep, so long as you indicate that it happened.
r~
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