Date: Fri, 21 Oct 2011 13:54:17 +0000 (UTC) From: Gleb Smirnoff <glebius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r226614 - head/share/man/man9 Message-ID: <201110211354.p9LDsHBD027058@svn.freebsd.org>
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Author: glebius Date: Fri Oct 21 13:54:17 2011 New Revision: 226614 URL: http://svn.freebsd.org/changeset/base/226614 Log: Note that it is still not possible to guard special kind of allocations, those that have special relationships with uma(9). Currently only mbuf clusters. Modified: head/share/man/man9/memguard.9 Modified: head/share/man/man9/memguard.9 ============================================================================== --- head/share/man/man9/memguard.9 Fri Oct 21 13:53:06 2011 (r226613) +++ head/share/man/man9/memguard.9 Fri Oct 21 13:54:17 2011 (r226614) @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd October 12, 2011 +.Dd October 21, 2011 .Dt MEMGUARD 9 .Os .Sh NAME @@ -204,3 +204,17 @@ Additions have been made by and .An Gleb Smirnoff Aq glebius@FreeBSD.org to both the implementation and the documentation. +.Sh BUGS +It is not possible to guard allocations that really expect theirselves to be +allocated from +.Xr uma 9 , +utilizing additional interfaces apart from +.Fn uma_zalloc +and +.Fn uma_free , +for example +.Fn uma_find_refcnt . +For the moment of writing only +.Xr mbuf 9 +cluster zones belong to that kind of allocations. +Attempt to guard them would lead to kernel panic.
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