Subject: Re: fdexpand() memory shortage check (Re: kern/14721)
To: Chuck Silvers <>
From: Jaromir Dolecek <>
List: tech-kern
Date: 12/15/2001 23:15:42
Chuck Silvers wrote:
> the trouble I have with this M_CANFAIL flag is exactly the point that
> you mention below:  even if we can recover from the file-descriptor
> allocation failure, kmem_map is still almost entirely full and so the
> next malloc() call is likely to panic the machine anyway.

Up to now, I though that only requests for clearly too big chunk
would fail with M_WAITOK. i.e. even if most of kva is allocated/used,
all the other malloc(9) calls with M_WAITOK would wait for the
memory to become available, rather than fail (and panic).
Is this not true?

Jaromir Dolecek <>
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