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93f8abeff0
When a kmem cache is exhausted and needs to be expanded a new slab is allocated. KM_SLEEP callers can block and wait for the allocation, but KM_NOSLEEP callers were incorrectly allowed to block as well. Resolve this by attempting an emergency allocation as a best effort. This may fail but that's fine since any KM_NOSLEEP consumer is required to handle an allocation failure. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Adam Moss <c@yotes.com> Reviewed-by: Brian Atkinson <batkinson@lanl.gov> Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu> Reviewed-by: Tony Hutter <hutter2@llnl.gov> |
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