Re: [-mm patch] i386: enable 4k stacks by default

From: Alan Cox
Date: Mon Apr 30 2007 - 04:17:35 EST

> I doubt it. Every time this comes up the problem of stacked I/O
> configuration being able to reliably blow the 4k stack limit comes
> up. Usually it's XFS that is blamed, but it seems ext3 and reiser
> can both suffer from the same problem. And now we can add things
> like unionfs/ecryptfs into the stack as well....

The 8K stack selection does not change this, it just means that if there
is a problem it'll randomly blow up when the heavy IRQ user and the heavy
non-IRQ user occur at the right moments. If this still occurs for some
combinations then the fix would be 8K + 4K IRQ stack, not just to use 8K

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