Messages in this thread | | | Date | Mon, 14 Jan 2008 11:54:39 +0800 | From | Fengguang Wu <> | Subject | Re: regression: 100% io-wait with 2.6.24-rcX |
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On Sun, Jan 13, 2008 at 07:59:33PM +0800, Fengguang Wu wrote: > On Sun, Jan 13, 2008 at 10:49:31AM +0100, Joerg Platte wrote: > > register_jprobe(ext2_writepage) = 0 > > register_jprobe(requeue_io) = 0 > > register_kprobe(submit_bio) = 0 > > requeue_io: > > inode 114019(sda7/.kde) count 2,2 size 0 pages 1 > > 0 2 0 U____ > > requeue_io: > > inode 114025(sda7/cache-ibm) count 2,1 size 0 pages 1 > > 0 2 0 U____ > > requeue_io: > > inode 114029(sda7/socket-ibm) count 2,3 size 0 pages 1 > > 0 2 0 U____ > > requeue_io: > > inode 114017(sda7/0266584877) count 3,6 size 0 pages 1 > > 0 2 0 U____ > > It helps. Thank you, Joerg! > > The .kde/cache-ibm/socket-ibm/0266584877 above are directories. > It's weird that dirs would have their own mappings in ext2. In
Oh, ext2 dirs have their own mapping pages. Not the same with ext3.
> particular this bug is triggered because the dir mapping page has > PAGECACHE_TAG_DIRTY set and PG_dirty cleared, staying in an > inconsistent state.
Just found that a deleted dir will enter that inconsistent state when someone still have reference to it...
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