Date: Wed, 18 Apr 2001 12:18:22 -0400 (EDT) From: Zhihui Zhang <zzhang@cs.binghamton.edu> To: freebsd-hackers@freebsd.org Subject: Buffer emergence reserve Message-ID: <Pine.SOL.4.21.0104181201080.27860-100000@opal>
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While looking at the code in vfs_bio.c, I notice the existence of low and high free buffer counters. The comments say they are there to give some special process like buf daemon access to emergence reserve. I just don't get the reason for having this emergence reserve. Do we allocate buffer in an interrupt environment? Do we need extra buffers in order to free buffers? Please shed a light on this for me. Thanks. -Zhihui To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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