On Thu, 2010-05-13 at 17:12 +0200, Jan Kara wrote: > If you look at the array more in detail, you'll notice that 'offs' part of > structure is sometimes identical. That should never happen because 'offs' > contains offset of the corresponding directory entry in a block. So when > offsets are identical in this array, subsequent move will copy some entries > several times and leave entries that should be moved in the old block, > resulting in a corruption we see. > The question is, how could offsets be the same? dx_make_map seems to get > it right and dx_sort_map as well. Maybe I'd peek into disassembly of > dx_sort_map to see whether swap() macro does what it should... If that > looks OK, you could try adding some debug checks into dx_sort_map and try > to catch the moment when duplicate offsets are created... Ok so a very quick test with another compiler and the problem -appears- gone. I'll investigate more in depth later tonight or this week-end. Looks like it may all have been a false alarm, just don't use gcc-4.4.0 :-) Cheers, Ben. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
