Messages in this thread | | | Date | Wed, 31 Jan 2007 14:44:23 +0000 | From | Al Viro <> | Subject | Re: How to locate struct file * from a bio? |
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On Wed, Jan 31, 2007 at 09:34:54AM -0500, Eddie Pettis wrote: > Short question: Is it possible to locate the struct file * associated > with a bio? If so, how?
Obviously impossible. For one thing, there might very well be no inode, let alone struct file, associated with bio in question (e.g. for any filesystem metadata). Moreover, the same on-disk object may get IO without any stuct file at all (e.g. a directory) or with many struct file (e.g. any file independently opened by several processes; no matter how many of them do reads, we'll get stuff pulled into page cache the same way (and once, not once per struct file). - 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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