On Thu, Jan 6, 2011 at 4:56 PM, Heinz Diehl [off-list ref] wrote:

On 05.12.2010, Milan Broz wrote:

quoted

It still seems to like dmcrypt with its parallel processing is just
trigger to another bug in 37-rc.

To come back to this: my 3 systems (XFS filesystem) running the latest
dm-crypt-scale-to-multiple-cpus patch from Andi Kleen/Milan Broz have
not showed a single problem since 2.6.37-rc6 and above. No corruption any
longer, no freezes, nothing. The patch applies cleanly to 2.6.37, too,
and runs just fine.

I blindly guess that my data corruption problem was related to something else in the
2.6.37-rc series up to -rc4/5.

Since this patch is a significant improvement: any chance that it finally gets
merged into mainline/stable?

Hi Heinz,

I've been using this patch since 2.6.37-rc6+ with ext4 and xfs
filesystems and haven't seen any corruptions since then
(ext4 got "fixed" since 2.6.37-rc6, xfs showed no problems from the start)

http://git.eu.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1449032be17abb69116dbc393f67ceb8bd034f92
(is the actual temporary fix for ext4)

Regards

Matt