On Thu, Dec 03, 2015 at 08:08:39AM -0800, Eric Dumazet wrote:

Well, it will fail before this point if memory is fragmented.

Indeed, I was surprised that it even worked up to that point,
possibly because the previous resizes might have actually been
done in process context.

Anyway, __vmalloc() can be used with GFP_ATOMIC, have you tried this ?

Ah I didn't know that.  That would be much simpler.  I'll give it a
try.

Thanks Eric!
-- 
Email: Herbert Xu [off-list ref]
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt