>commit f6468e9eb2c9de9b9af113b10cd1a0b3c64c0e42
>Author: Matthew Dillon <dillon@apollo.backplane.com>
>Date: Tue Jan 26 12:50:33 2010 -0800
>
> HAMMER VFS - Disallow rebalancing on small-memory machines
>=20=20=20=20
> * Rebalancing may have to hold upwards of 3900 buffers locked
> in the worst case, disallow the operation on machines which
> do not configure enough buffer cache buffers.
Could this be MFC to 2.4, thanks.
Just cherry-picking works here.
ENOSPC isn't the most obvious error code:
when testing I first thought something wasn't right,
as 'No space left on device' isn't correct.
What about EDEADLK?
(could match the stall I had before this commit (issue1552))
It seems we don't have error message just saying 'resource shortage'.
-thomas