Re: ext4-stable build failure (Re: Ext4 tree backports for2.6.27.10 and 2.6.28)

From: Theodore Tso
Date: Sat Jan 17 2009 - 18:03:36 EST

On Sat, Jan 17, 2009 at 11:16:51PM +0100, Malte Schröder wrote:
> kernel 2.6.28 with ext4-stable fails to build for SMP on AMD64.
> Building modules, stage 2.
> MODPOST 905 modules
> ERROR: "inode_lock" [fs/ext4/ext4.ko] undefined!
> I had to revert 5cb8613e44b6e6c77dcf231d691b96c91a5adeab (ext4: Add a
> delayed allocation debugging ioctl), after that it works.

I see the problem; inode_lock isn't currently an exported symbol, and
I generally don't compile ext4 as a module, so I didn't notice the
problem. The patch in question is a debugging patch that is never
meant for mainline or a for-stable series, so the simplest thing to do
for now is just to revert the patch. I'll look into a module-friendly
way of accomplishing the same goal.


- Ted
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