On Mon, Feb 7, 2011 at 5:45 PM, Ted Ts'o <tytso@xxxxxxx> wrote: > On Fri, Feb 04, 2011 at 10:40:47PM +0000, Matt wrote: >> >> So that means that the file-corruption which existed until 2.6.37-rc6 >> and got triggered (for me) more easily via "dm crypt: scale to >> multiple CPUs" >> is fixed now ? > > Well, a patch exists for it that will be merged into 2.6.38. > >> That should give ext4 a nice speedup for >=2.6.38 :) > > I'm not going to make it be the default for 2.6.38, since it's fairly > late in the -rc features. People who want it can explicitly enable it > using the mount option mblk_io_submit, though. (And let me know your > success stories! :-) I will be enabling it as the default in > 2.6.39-rc1. > Hi Ted, I guess it should be save to enable it with 2.6.37, dm-crypt multi-cpu patch and the following patch ? "ext4: Fix data corruption with multi-block writepages support" (of course that's the minimum - it would be better to pull in the ext4 changes for 2.6.38) For a short time I had it activated (via additional) mblk_io_submit mount-command on my portage-partition (where the portage-ball of my Gentoo system is). I was curious to see what messages I would get and wondered why there was nothing about mballoc mentioned If I recall correctly there were always messages in the past, like: EXT4-fs: delayed allocation enabled EXT4-fs: file extents enabled EXT4-fs: mballoc enabled these are from 2.6.28 - I'm only getting: EXT4-fs (dm-3): mounted filesystem with ordered data mode. or EXT4-fs (dm-3): mounted filesystem with ordered data mode. Opts: commit=60,barrier=1 (I like to set the barriers / flushes explicitly). Sorry if I didn't follow development but these messages were kind of more and more silenced ? Thanks ! >> Reported-by: Matthias Bayer <jackdachef <at> gmail <dot> com > > > Sure! Thanks ! > > - Ted > Regards Matt -- 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
