Re: [PATCH v2 6/6] Btrfs: use less memory for delalloc sanity tests

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On Fri, Sep 23, 2016 at 11:27:27AM +0200, David Sterba wrote:
> On Thu, Sep 22, 2016 at 05:24:25PM -0700, Omar Sandoval wrote:
> > From: Omar Sandoval <osandov@xxxxxx>
> > 
> > test_find_delalloc() allocates 256 MB worth of pages. That's all of the
> > RAM that my MIPS emulator has, so it ends up panicking after it OOM
> > kills everything. We don't actually need to use that much for this test.
> 
> I'm not sure we should limit it that way as more bytes can give it more
> stress. Can we do it somehow dynamically ? Like start with 256M and fall
> back to the numbers you've used.
> 
> Or maybe start from the low bound and allocate until it fails with first
> ENOMEM.

I figured out how to get qemu to do highmem on MIPS, so we can drop this
patch. It's reasonable to assume that the sanity tests are running on a
machine with a decent amount of memory.

-- 
Omar
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