Messages in this thread | | | Date | Wed, 29 Jan 2003 16:00:00 +0100 | From | Jens Axboe <> | Subject | Re: [PATCH] IDE: Do not call bh_phys() on buffers with invalid b_page. |
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On Wed, Jan 29 2003, Benjamin Herrenschmidt wrote: > Hi, I just spotted this in the patch (but the code itself have been > there since 2.4.20-pre2). > > > - if (((unsigned long) bh->b_data) < PAGE_SIZE) > > + if ((unsigned long) bh->b_data < PAGE_SIZE) > > Didn't you meant PAGE_OFFSET and not PAGE_SIZE here ? I fail to see why > it would make any sense to compare a virtual address to PAGE_SIZE ;)
For highmem buffer heads, b_data is the offset into the page. Does look confusing, I'll give you that :-)
The test should most likely just be removed, if anything.
-- Jens Axboe
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