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Include path for tmpfs objects in vm.objects sysctl

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This applies the fix in r283924 to the vm.objects sysctl
added by r283624 so the output will include the vnode
information (i.e. path) for tmpfs objects.

Reviewed by:	kib, dab
MFC after:	2 weeks
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D2724
This commit is contained in:
Eric van Gyzen 2018-11-30 04:59:43 +00:00
parent 0951bd362c
commit 5e38e3f5eb
3 changed files with 46 additions and 106 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

81
sys/kern/kern_proc.c
View File

@ -2219,43 +2219,11 @@ sysctl_kern_proc_ovmmap(SYSCTL_HANDLER_ARGS)
freepath = NULL;
fullpath = "";
if (lobj) {
vp = NULL;
switch (lobj->type) {
case OBJT_DEFAULT:
kve->kve_type = KVME_TYPE_DEFAULT;
break;
case OBJT_VNODE:
kve->kve_type = KVME_TYPE_VNODE;
vp = lobj->handle;
vref(vp);
break;
case OBJT_SWAP:
if ((lobj->flags & OBJ_TMPFS_NODE) != 0) {
kve->kve_type = KVME_TYPE_VNODE;
if ((lobj->flags & OBJ_TMPFS) != 0) {
vp = lobj->un_pager.swp.swp_tmpfs;
vref(vp);
}
} else {
kve->kve_type = KVME_TYPE_SWAP;
}
break;
case OBJT_DEVICE:
kve->kve_type = KVME_TYPE_DEVICE;
break;
case OBJT_PHYS:
kve->kve_type = KVME_TYPE_PHYS;
break;
case OBJT_DEAD:
kve->kve_type = KVME_TYPE_DEAD;
break;
case OBJT_SG:
kve->kve_type = KVME_TYPE_SG;
break;
default:
kve->kve_type = vm_object_kvme_type(lobj, &vp);
if (kve->kve_type == KVME_TYPE_MGTDEVICE)
kve->kve_type = KVME_TYPE_UNKNOWN;
break;
}
if (vp != NULL)
vref(vp);
if (lobj != obj)
VM_OBJECT_RUNLOCK(lobj);
@ -2463,46 +2431,9 @@ kern_proc_vmmap_out(struct proc *p, struct sbuf *sb, ssize_t maxlen, int flags)
freepath = NULL;
fullpath = "";
if (lobj != NULL) {
vp = NULL;
switch (lobj->type) {
case OBJT_DEFAULT:
kve->kve_type = KVME_TYPE_DEFAULT;
break;
case OBJT_VNODE:
kve->kve_type = KVME_TYPE_VNODE;
vp = lobj->handle;
kve->kve_type = vm_object_kvme_type(lobj, &vp);
if (vp != NULL)
vref(vp);
break;
case OBJT_SWAP:
if ((lobj->flags & OBJ_TMPFS_NODE) != 0) {
kve->kve_type = KVME_TYPE_VNODE;
if ((lobj->flags & OBJ_TMPFS) != 0) {
vp = lobj->un_pager.swp.swp_tmpfs;
vref(vp);
}
} else {
kve->kve_type = KVME_TYPE_SWAP;
}
break;
case OBJT_DEVICE:
kve->kve_type = KVME_TYPE_DEVICE;
break;
case OBJT_PHYS:
kve->kve_type = KVME_TYPE_PHYS;
break;
case OBJT_DEAD:
kve->kve_type = KVME_TYPE_DEAD;
break;
case OBJT_SG:
kve->kve_type = KVME_TYPE_SG;
break;
case OBJT_MGTDEVICE:
kve->kve_type = KVME_TYPE_MGTDEVICE;
break;
default:
kve->kve_type = KVME_TYPE_UNKNOWN;
break;
}
if (lobj != obj)
VM_OBJECT_RUNLOCK(lobj);

68
sys/vm/vm_object.c
View File

@ -2330,6 +2330,41 @@ vm_object_vnode(vm_object_t object)
return (vp);
}
/*
* Return the kvme type of the given object.
* If vpp is not NULL, set it to the object's vm_object_vnode() or NULL.
*/
int
vm_object_kvme_type(vm_object_t object, struct vnode **vpp)
{
VM_OBJECT_ASSERT_LOCKED(object);
if (vpp != NULL)
*vpp = vm_object_vnode(object);
switch (object->type) {
case OBJT_DEFAULT:
return (KVME_TYPE_DEFAULT);
case OBJT_VNODE:
return (KVME_TYPE_VNODE);
case OBJT_SWAP:
if ((object->flags & OBJ_TMPFS_NODE) != 0)
return (KVME_TYPE_VNODE);
return (KVME_TYPE_SWAP);
case OBJT_DEVICE:
return (KVME_TYPE_DEVICE);
case OBJT_PHYS:
return (KVME_TYPE_PHYS);
case OBJT_DEAD:
return (KVME_TYPE_DEAD);
case OBJT_SG:
return (KVME_TYPE_SG);
case OBJT_MGTDEVICE:
return (KVME_TYPE_MGTDEVICE);
default:
return (KVME_TYPE_UNKNOWN);
}
}
static int
sysctl_vm_object_list(SYSCTL_HANDLER_ARGS)
{
@ -2404,38 +2439,9 @@ sysctl_vm_object_list(SYSCTL_HANDLER_ARGS)
kvo->kvo_vn_fsid_freebsd11 = 0;
freepath = NULL;
fullpath = "";
vp = NULL;
switch (obj->type) {
case OBJT_DEFAULT:
kvo->kvo_type = KVME_TYPE_DEFAULT;
break;
case OBJT_VNODE:
kvo->kvo_type = KVME_TYPE_VNODE;
vp = obj->handle;
kvo->kvo_type = vm_object_kvme_type(obj, &vp);
if (vp != NULL)
vref(vp);
break;
case OBJT_SWAP:
kvo->kvo_type = KVME_TYPE_SWAP;
break;
case OBJT_DEVICE:
kvo->kvo_type = KVME_TYPE_DEVICE;
break;
case OBJT_PHYS:
kvo->kvo_type = KVME_TYPE_PHYS;
break;
case OBJT_DEAD:
kvo->kvo_type = KVME_TYPE_DEAD;
break;
case OBJT_SG:
kvo->kvo_type = KVME_TYPE_SG;
break;
case OBJT_MGTDEVICE:
kvo->kvo_type = KVME_TYPE_MGTDEVICE;
break;
default:
kvo->kvo_type = KVME_TYPE_UNKNOWN;
break;
}
VM_OBJECT_RUNLOCK(obj);
if (vp != NULL) {
vn_fullpath(curthread, vp, &fullpath, &freepath);

3
sys/vm/vm_object.h
View File

@ -263,6 +263,8 @@ extern struct vm_object kernel_object_store;
#define VM_OBJECT_WUNLOCK(object) \
rw_wunlock(&(object)->lock)
struct vnode;
/*
* The object must be locked or thread private.
*/
@ -328,6 +330,7 @@ void vm_object_destroy (vm_object_t);
void vm_object_terminate (vm_object_t);
void vm_object_set_writeable_dirty (vm_object_t);
void vm_object_init (void);
int vm_object_kvme_type(vm_object_t object, struct vnode **vpp);
void vm_object_madvise(vm_object_t, vm_pindex_t, vm_pindex_t, int);
boolean_t vm_object_page_clean(vm_object_t object, vm_ooffset_t start,
vm_ooffset_t end, int flags);