Messages in this thread | | | Subject | Re: [PATCH] only irq-safe atomic ops | From | Steve Lord <> | Date | 25 Feb 2002 13:45:22 -0600 |
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On Mon, 2002-02-25 at 13:42, Andrew Morton wrote: > Stephen Lord wrote: > > > > Yep, bio just made it easier to get larger requests. > > > > Which promptly go kersplat when you feed them into > submit_bio(): > > BUG_ON(bio_sectors(bio) > q->max_sectors); > > Given that I'm hand-rolling a monster bio, I need to know > when to wrap it up and send it off, to avoid creating a bio > which is larger than the target device will accept. I'm currently > using the below patch. Am I right that this is missing API > functionality, or did I miss something? >
I don't run into that one, but probably because I limit xfs to use BIO_MAX_SECTORS, take a look at ll_rw_kio to see how that splits things up. This of course does not take into account any further restriction in an underlying queue.
Steve
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Steve Lord voice: +1-651-683-3511 Principal Engineer, Filesystem Software email: lord@sgi.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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