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Re: kern/45709: tmpfs size went nuts

The following reply was made to PR kern/45709; it has been noted by GNATS.

From: Taylor R Campbell <>
To: David Holland <>
Subject: Re: kern/45709: tmpfs size went nuts
Date: Sat, 17 Dec 2011 03:09:48 +0000

    Date: Sat, 17 Dec 2011 03:00:06 +0000 (UTC)
    From: David Holland <>
    On Fri, Dec 16, 2011 at 11:00:10PM +0000, Taylor R Campbell wrote:
     >  Unlikely.  I had two or three gigabytes of swap handy, and there was
     >  only about a gigabyte of RAM in use at the time, plus a few dozens of
     >  megabytes stored in the tmpfses.  So there should have been four or
     >  five gigabytes of memory free, not ten to twenty megabytes.
    So, something was truncating to 32 bits? :-/
 Hmm, sounds plausible, particularly since I'm on i386.  The
 combination of size_t and uint64_t in tmpfs_bytes_max in tmpfs_subr.c
 looks suspect, but it wouldn't surprise me if there were other
 problems with this elsewhere in the system.

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