Date: Mon, 7 Sep 2009 12:10:41 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/fs/pseudofs pseudofs_vncache.c Message-ID: <200909071211.n87CB1u6046661@repoman.freebsd.org>
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kib 2009-09-07 12:10:41 UTC
FreeBSD src repository
Modified files:
sys/fs/pseudofs pseudofs_vncache.c
Log:
SVN rev 196921 on 2009-09-07 12:10:41Z by kib
If a race is detected, pfs_vncache_alloc() may reclaim a vnode that had
never been inserted into the pfs_vncache list. Since pfs_vncache_free()
does not anticipate this case, it decrements pfs_vncache_entries
unconditionally; if the vnode was not in the list, pfs_vncache_entries
will no longer reflect the actual number of list entries. This may cause
size of the cache to exceed the configured maximum. It may also trigger
a panic during module unload or system shutdown.
Do not decrement pfs_vncache_entries for the vnode that was not in the
list.
Submitted by: tegge
Reviewed by: des
MFC after: 1 week
Revision Changes Path
1.48 +5 -3 src/sys/fs/pseudofs/pseudofs_vncache.c
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