Date: Mon, 2 Aug 2004 13:59:02 +0000 (UTC) From: Ian Dowse <iedowse@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/dev/usb usb_mem.c Message-ID: <200408021359.i72Dx2CW020893@repoman.freebsd.org>
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iedowse 2004-08-02 13:59:02 UTC
FreeBSD src repository
Modified files:
sys/dev/usb usb_mem.c
Log:
When searching for a suitable block of memory on the free list,
skip blocks that are too big by a factor of two or greater. This
avoids some cases of extremely inefficient memory use that can occur
when large (e.g. 64k) blocks on the free list get used when allocating
a 4k chunk of 64-byte fragments. Because fragments have their own
free list, the 60k difference got lost forever every time.
Revision Changes Path
1.6 +2 -1 src/sys/dev/usb/usb_mem.c
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