Author: fabient
Date: Sun Jan 10 16:43:45 2010
New Revision: 202016
URL: http://svn.freebsd.org/changeset/base/202016
Log:
MFC 201151:
Use VFS_{LOCK,UNLOCK}_GIANT() around the call to vrele().
Modified:
stable/7/sys/dev/hwpmc/hwpmc_mod.c
Directory Properties:
stable/7/sys/ (props changed)
stable/7/sys/cddl/contrib/opensolaris/ (props changed)
stable/7/sys/contrib/dev/acpica/ (props changed)
stable/7/sys/contrib/pf/ (props changed)
Modified: stable/7/sys/dev/hwpmc/hwpmc_mod.c
==============================================================================
--- stable/7/sys/dev/hwpmc/hwpmc_mod.c Sun Jan 10 16:40:14 2010
(r202015)
+++ stable/7/sys/dev/hwpmc/hwpmc_mod.c Sun Jan 10 16:43:45 2010
(r202016)
@@ -41,6 +41,7 @@ __FBSDID("$FreeBSD$");
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
+#include <sys/mount.h>
#include <sys/mutex.h>
#include <sys/pmc.h>
#include <sys/pmckern.h>
@@ -1628,6 +1629,7 @@ pmc_log_kernel_mappings(struct pmc *pm)
static void
pmc_log_process_mappings(struct pmc_owner *po, struct proc *p)
{
+ int locked;
vm_map_t map;
struct vnode *vp;
struct vmspace *vm;
@@ -1736,7 +1738,11 @@ pmc_log_process_mappings(struct pmc_owne
freepath = NULL;
pmc_getfilename(vp, &fullpath, &freepath);
last_vp = vp;
+
+ locked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp);
+ VFS_UNLOCK_GIANT(locked);
+
vp = NULL;
pmclog_process_map_in(po, p->p_pid, start_addr, fullpath);
if (freepath)
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