Date: Wed, 17 Nov 2004 04:49:27 +0000 (UTC) From: Alan Cox <alc@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/vm vm_page.c Message-ID: <200411170449.iAH4nRCK031490@repoman.freebsd.org>
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alc 2004-11-17 04:49:27 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_5)
sys/vm vm_page.c
Log:
MFC revision 1.293
Correct two errors in PG_BUSY management by vm_page_cowfault(). Both
errors are in rarely executed paths.
1. Each time the retry_alloc path is taken, the PG_BUSY must be set again.
Otherwise vm_page_remove() panics.
2. There is no need to set PG_BUSY on the newly allocated page before
freeing it. The page already has PG_BUSY set by vm_page_alloc().
Setting it again could cause an assertion failure.
Revision Changes Path
1.290.2.1 +1 -2 src/sys/vm/vm_page.c
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