Messages in this thread | | | Date | Tue, 8 May 2007 21:08:09 +0100 (BST) | From | Hugh Dickins <> | Subject | Re: [rfc] optimise unlock_page |
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On Tue, 8 May 2007, Nick Piggin wrote:
> This patch trades a page flag for a significant improvement in the unlock_page > fastpath. Various problems in the previous version were spotted by Hugh and > Ben (and fixed in this one). > > Comments?
Seems there's still a bug there. I get hangs on the page lock, on i386 and on x86_64 and on powerpc: sometimes they unhang themselves after a while (presume other activity does the wakeup). Obvious even while booting (Starting udevd). Sorry, not had time to investigate.
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