Date: Mon, 18 Oct 2004 08:11:59 +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: <200410180811.i9I8Bx7T059269@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
alc 2004-10-18 08:11:59 UTC
FreeBSD src repository
Modified files:
sys/vm vm_page.c
Log:
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.
MFC after: 2 weeks
Revision Changes Path
1.293 +1 -2 src/sys/vm/vm_page.c
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200410180811.i9I8Bx7T059269>