Date: Wed, 16 Dec 1998 14:27:21 -0500 (EST) From: zhihuizhang <bf20761@binghamton.edu> To: hackers <freebsd-hackers@FreeBSD.ORG> Subject: Question on lock Message-ID: <Pine.SOL.L3.93.981216141324.15319A-100000@bingsun2>
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In the comment of vm_map_pageable() in file vm_map.c, there is a following sentence: "Because of problems in the recursive lock package, we cannot upgrade to a write lock in vm_map_lookup." Does the recursive lock package refer to kern_lock.c? There IS a lock_read_to_write() call in vm_map_lookup(). So why there is such a problem? Please give me some enlightenment. Any help is appreciated. -------------------------------------------------- | Zhihui Zhang, http://cs.binghamton.edu/~zzhang | | Dept. of Computer Science, SUNY at Binghamton | -------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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