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Use VFS_{LOCK,UNLOCK}_GIANT() around the call to vrele().

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Reviewed by:	 kib
This commit is contained in:
Joseph Koshy 2009-12-29 02:35:50 +00:00
parent bcd3b68dd2
commit e9b5dc16ef
1 changed files with 6 additions and 0 deletions
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6
sys/dev/hwpmc/hwpmc_mod.c
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@ -41,6 +41,7 @@ __FBSDID("$FreeBSD$");
#include <sys/lock.h> #include <sys/lock.h>
#include <sys/malloc.h> #include <sys/malloc.h>
#include <sys/module.h> #include <sys/module.h>
#include <sys/mount.h>
#include <sys/mutex.h> #include <sys/mutex.h>
#include <sys/pmc.h> #include <sys/pmc.h>
#include <sys/pmckern.h> #include <sys/pmckern.h>
@ -1625,6 +1626,7 @@ pmc_log_kernel_mappings(struct pmc *pm)
static void static void
pmc_log_process_mappings(struct pmc_owner *po, struct proc *p) pmc_log_process_mappings(struct pmc_owner *po, struct proc *p)
{ {
int locked;
vm_map_t map; vm_map_t map;
struct vnode *vp; struct vnode *vp;
struct vmspace *vm; struct vmspace *vm;
@ -1733,7 +1735,11 @@ pmc_log_process_mappings(struct pmc_owner *po, struct proc *p)
freepath = NULL; freepath = NULL;
pmc_getfilename(vp, &fullpath, &freepath); pmc_getfilename(vp, &fullpath, &freepath);
last_vp = vp; last_vp = vp;
locked = VFS_LOCK_GIANT(vp->v_mount);
vrele(vp); vrele(vp);
VFS_UNLOCK_GIANT(locked);
vp = NULL; vp = NULL;
pmclog_process_map_in(po, p->p_pid, start_addr, fullpath); pmclog_process_map_in(po, p->p_pid, start_addr, fullpath);
if (freepath) if (freepath)