Date: Tue, 27 Feb 2001 20:30:28 -0800 (PST) From: Matt Dillon <dillon@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/i386/linux linux_machdep.c Message-ID: <200102280430.f1S4UST14589@freefall.freebsd.org>
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dillon 2001/02/27 20:30:28 PST
Modified files:
sys/i386/linux linux_machdep.c
Log:
Linux does not filesystem-sync file-backed writable mmap pages on
a regular basis. Adjust our linux emulation to conform. This will
cause more dirty pages to be left for the pagedaemon to deal with,
but our new low-memory handling code can deal with it. The linux
way appears to be a trend, and we may very well make MAP_NOSYNC the
default for FreeBSD as well (once we have reasonable sequential
write-behind heuristics for random faults).
(will be MFC'd prior to 4.3 freeze)
Suggested by: Andrew Gallatin
Revision Changes Path
1.13 +3 -1 src/sys/i386/linux/linux_machdep.c
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