Messages in this thread | | | Date | Wed, 10 Aug 2005 11:21:56 -0700 | From | Mark Fasheh <> | Subject | Re: GFS |
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On Wed, Aug 10, 2005 at 07:57:43PM +0300, Pekka J Enberg wrote: > Surely avoiding them is preferred but how do you do that when you have to > mmap'd regions where userspace does memcpy()? The kernel won't much saying > in it until ->nopage. We cannot grab all the required locks in proper order > here because we don't know what size the buffer is. That's why I think lock > sorting won't work of all the cases and thus the problem needs to be taken > care of by the dlm. Hmm, well today in OCFS2 if you're not coming from read or write, the lock is held only for the duration of ->nopage so I don't think we could get into any deadlocks for that usage. --Mark
-- Mark Fasheh Senior Software Developer, Oracle mark.fasheh@oracle.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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