Valerie Clement wrote:

Eric Sandeen wrote:

quoted

Valerie Clement wrote:

quoted

Fix kernel BUG at fs/ext4/mballoc.c:910!

From: Valerie Clement <redacted>

With the flex_bg feature enabled, a large file creation oopses the
kernel.

Valerie, what's the specific testcase for this?

Thanks,
-Eric

I just did a simple dd,
  dd if=/dev/zero of=/mnt/test/foo bs=1M count=8k
on an ext4 filesystem with the uninit_groups, lazy_bg and flex_bg
features enabled and the default mount options.

Ok, thanks Valerie.  It's just always nice to know exactly how to
reproduce a problem that a patch fixes, IMHO.

-Eric