5 files changed, 12 insertions, 21 deletions

diff --git a/sys/dev/hwpmc/hwpmc_mod.c b/sys/dev/hwpmc/hwpmc_mod.c
index f750d46e409d1..61c07350d4a5f 100644
--- a/sys/dev/hwpmc/hwpmc_mod.c
+++ b/sys/dev/hwpmc/hwpmc_mod.c
@@ -680,9 +680,7 @@ pmc_getfilename(struct vnode *v, char **fullpath, char **freepath)
 
 	*fullpath = "unknown";
 	*freepath = NULL;
-	vn_lock(v, LK_CANRECURSE | LK_EXCLUSIVE | LK_RETRY);
 	vn_fullpath(curthread, v, fullpath, freepath);
-	VOP_UNLOCK(v, 0);
 }
 
 /*
diff --git a/sys/fs/procfs/procfs.c b/sys/fs/procfs/procfs.c
index bc0efdaa2f61a..26bd18532f8e2 100644
--- a/sys/fs/procfs/procfs.c
+++ b/sys/fs/procfs/procfs.c
@@ -70,17 +70,13 @@ procfs_doprocfile(PFS_FILL_ARGS)
 	char *fullpath = "unknown";
 	char *freepath = NULL;
 	struct vnode *textvp;
-	int err;
 
+	PROC_LOCK(p);
 	textvp = p->p_textvp;
-	VI_LOCK(textvp);
-	vholdl(textvp);
-	err = vn_lock(textvp, LK_EXCLUSIVE | LK_INTERLOCK);
-	vdrop(textvp);
-	if (err)
-		return (err);
+	vhold(textvp);
+	PROC_UNLOCK(p);
 	vn_fullpath(td, textvp, &fullpath, &freepath);
-	VOP_UNLOCK(textvp, 0);
+	vdrop(textvp);
 	sbuf_printf(sb, "%s", fullpath);
 	if (freepath)
 		free(freepath, M_TEMP);
diff --git a/sys/fs/procfs/procfs_map.c b/sys/fs/procfs/procfs_map.c
index 1a9e4aaa8b804..0c671b4c286cd 100644
--- a/sys/fs/procfs/procfs_map.c
+++ b/sys/fs/procfs/procfs_map.c
@@ -175,10 +175,9 @@ procfs_doprocmap(PFS_FILL_ARGS)
 			shadow_count = obj->shadow_count;
 			VM_OBJECT_UNLOCK(obj);
 			if (vp != NULL) {
-				vfslocked = VFS_LOCK_GIANT(vp->v_mount);
-				vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
 				vn_fullpath(td, vp, &fullpath, &freepath);
-				vput(vp);
+				vfslocked = VFS_LOCK_GIANT(vp->v_mount);
+				vrele(vp);
 				VFS_UNLOCK_GIANT(vfslocked);
 			}
 		} else {
diff --git a/sys/kern/kern_descrip.c b/sys/kern/kern_descrip.c
index df92aca1fdf88..833aa2c4e04cf 100644
--- a/sys/kern/kern_descrip.c
+++ b/sys/kern/kern_descrip.c
@@ -2537,10 +2537,9 @@ export_vnode_for_sysctl(struct vnode *vp, int type,
 	freepath = NULL;
 	fullpath = "-";
 	FILEDESC_SUNLOCK(fdp);
-	vfslocked = VFS_LOCK_GIANT(vp->v_mount);
-	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
 	vn_fullpath(curthread, vp, &fullpath, &freepath);
-	vput(vp);
+	vfslocked = VFS_LOCK_GIANT(vp->v_mount);
+	vrele(vp);
 	VFS_UNLOCK_GIANT(vfslocked);
 	strlcpy(kif->kf_path, fullpath, sizeof(kif->kf_path));
 	if (freepath != NULL)
@@ -2708,10 +2707,9 @@ sysctl_kern_proc_filedesc(SYSCTL_HANDLER_ARGS)
 			freepath = NULL;
 			fullpath = "-";
 			FILEDESC_SUNLOCK(fdp);
-			vfslocked = VFS_LOCK_GIANT(vp->v_mount);
-			vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
 			vn_fullpath(curthread, vp, &fullpath, &freepath);
-			vput(vp);
+			vfslocked = VFS_LOCK_GIANT(vp->v_mount);
+			vrele(vp);
 			VFS_UNLOCK_GIANT(vfslocked);
 			strlcpy(kif->kf_path, fullpath,
 			    sizeof(kif->kf_path));
diff --git a/sys/kern/kern_proc.c b/sys/kern/kern_proc.c
index aa48bd596d5c7..f8f639c04e47f 100644
--- a/sys/kern/kern_proc.c
+++ b/sys/kern/kern_proc.c
@@ -1440,11 +1440,11 @@ sysctl_kern_proc_vmmap(SYSCTL_HANDLER_ARGS)
 			kve->kve_shadow_count = obj->shadow_count;
 			VM_OBJECT_UNLOCK(obj);
 			if (vp != NULL) {
-				vfslocked = VFS_LOCK_GIANT(vp->v_mount);
-				vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
 				vn_fullpath(curthread, vp, &fullpath,
 				    &freepath);
 				cred = curthread->td_ucred;
+				vfslocked = VFS_LOCK_GIANT(vp->v_mount);
+				vn_lock(vp, LK_SHARED | LK_RETRY);
 				if (VOP_GETATTR(vp, &va, cred) == 0) {
 					kve->kve_fileid = va.va_fileid;
 					kve->kve_fsid = va.va_fsid;