Hi,

Since update to 2.6.37 I can't build openwrt on my btrfs buildroot anymore.
I'm not sure if this is related to the other flush-btrfs-1 thread.

plenty of diskspace is free:

/dev/mapper/cruor-build
                       97G   68G   27G  73% /opt/build

It always hangs when openwrt builds the ext4 image and runs tune2fs on it.

/opt/build/fahrenheit/openwrt/staging_dir/host/bin/tune2fs -O
extents,uninit_bg,dir_index
/opt/build/fahrenheit/openwrt/build_dir/linux-x86_kvm_guest/root.ext4
tune2fs 1.41.13 (13-Dec-2010)

the processes can't be killed.

alt-sysctl-t does not show anything, nor is there a oops.

I put the the openwrt config I'm using at https://gist.github.com/794593
, maybe it is reproduceable.

Linux cruor 2.6.37 #2 SMP Thu Jan 20 02:09:59 CET 2011 x86_64 GNU/Linux

Please CC.

kind regards
 Daniel