Author: jamie
Date: Sat Apr 30 04:01:22 2016
New Revision: 298834
URL: https://svnweb.freebsd.org/changeset/base/298834
Log:
MFC r297367:
Move the various per-type arrays of OSD data into a single structure array.
MFC r297422:
Add osd_reserve() and osd_set_reserved(), which allow M_WAITOK allocation
of an OSD array.
Modified:
stable/10/share/man/man9/osd.9
stable/10/sys/kern/kern_osd.c
stable/10/sys/sys/osd.h
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/share/man/man9/osd.9
==============================================================================
--- stable/10/share/man/man9/osd.9 Sat Apr 30 03:19:07 2016
(r298833)
+++ stable/10/share/man/man9/osd.9 Sat Apr 30 04:01:22 2016
(r298834)
@@ -25,7 +25,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd January 5, 2011
+.Dd March 30, 2016
.Dt OSD 9
.Os
.Sh NAME
@@ -33,6 +33,9 @@
.Nm osd_register ,
.Nm osd_deregister ,
.Nm osd_set ,
+.Nm osd_reserve ,
+.Nm osd_set_reserved ,
+.Nm osd_free_reserved ,
.Nm osd_get ,
.Nm osd_del ,
.Nm osd_call ,
@@ -63,6 +66,22 @@
.Fa "void *value"
.Fc
.Ft void *
+.Fo osd_reserve
+.Fa "u_int slot"
+.Fc
+.Ft int
+.Fo osd_set_reserved
+.Fa "u_int type"
+.Fa "struct osd *osd"
+.Fa "u_int slot"
+.Fa "void *rsv"
+.Fa "void *value"
+.Fc
+.Ft void
+.Fo osd_free_reserved
+.Fa "void *rsv"
+.Fc
+.Ft void *
.Fo osd_get
.Fa "u_int type"
.Fa "struct osd *osd"
@@ -198,6 +217,15 @@ argument points to a data object to asso
.Fa osd .
.Pp
The
+.Fn osd_set_reserved
+function does the same as
+.Fn osd_set ,
+but with an extra argument
+.Fa rsv
+that is internal-use memory previously allocated via
+.Fn osd_reserve .
+.Pp
+The
.Fn osd_get
function returns the data pointer associated with a kernel data structure's
.Vt struct osd
@@ -324,6 +352,24 @@ will proceed without any
.Xr realloc 9
calls.
.Pp
+It is possible for
+.Fn osd_set
+to fail to allocate this array. To ensure that such allocation succeeds,
+.Fn osd_reserve
+may be called (in a non-blocking context), and it will pre-allocate the
+memory via
+.Xr malloc 9
+with M_WAITOK.
+Then this pre-allocated memory is passed to
+.Fn osd_set_reserved ,
+which will use it if necessary or otherwise discard it.
+The memory may also be explicitly discarded by calling
+.Fn osd_free_reserved .
+As this method always allocates memory whether or not it is ultimately needed,
+it should be used only rarely, such as in the unlikely event that
+.Fn osd_set
+fails.
+.Pp
The
.Nm
API is geared towards slot identifiers storing pointers to the same underlying
@@ -359,15 +405,27 @@ the kernel including most fast paths.
returns the slot identifier for the newly registered data type.
.Pp
.Fn osd_set
-returns zero on success or ENOMEM if the specified type/slot identifier pair
+and
+.Fn osd_set_reserved
+return zero on success or ENOMEM if the specified type/slot identifier pair
triggered an internal
.Xr realloc 9
-which failed.
+which failed
+.Fn ( osd_set_reserved
+will always succeed when
+.Fa rsv
+is non-NULL).
.Pp
.Fn osd_get
returns the data pointer for the specified type/slot identifier pair, or NULL
if
the slot has not been initialised yet.
.Pp
+.Fn osd_reserve
+returns a pointer suitable for passing to
+.Fn osd_set_reserved
+or
+.Fn osd_free_reserved .
+.Pp
.Fn osd_call
returns zero if no method is run or the method for each slot runs successfully.
If a method for a slot returns non-zero,
Modified: stable/10/sys/kern/kern_osd.c
==============================================================================
--- stable/10/sys/kern/kern_osd.c Sat Apr 30 03:19:07 2016
(r298833)
+++ stable/10/sys/kern/kern_osd.c Sat Apr 30 04:01:22 2016
(r298834)
@@ -44,6 +44,23 @@ __FBSDID("$FreeBSD$");
/* OSD (Object Specific Data) */
+/*
+ * Lock key:
+ * (m) osd_module_lock
+ * (o) osd_object_lock
+ * (l) osd_list_lock
+ */
+struct osd_master {
+ struct sx osd_module_lock;
+ struct rmlock osd_object_lock;
+ struct mtx osd_list_lock;
+ LIST_HEAD(, osd) osd_list; /* (l) */
+ osd_destructor_t *osd_destructors; /* (o) */
+ osd_method_t *osd_methods; /* (m) */
+ u_int osd_ntslots; /* (m) */
+ const u_int osd_nmethods;
+};
+
static MALLOC_DEFINE(M_OSD, "osd", "Object Specific Data");
static int osd_debug = 0;
@@ -62,25 +79,12 @@ static void do_osd_del(u_int type, struc
int list_locked);
/*
- * Lists of objects with OSD.
- *
- * Lock key:
- * (m) osd_module_lock
- * (o) osd_object_lock
- * (l) osd_list_lock
+ * List of objects with OSD.
*/
-static LIST_HEAD(, osd) osd_list[OSD_LAST + 1]; /* (m) */
-static osd_method_t *osd_methods[OSD_LAST + 1]; /* (m) */
-static u_int osd_nslots[OSD_LAST + 1]; /* (m) */
-static osd_destructor_t *osd_destructors[OSD_LAST + 1]; /* (o) */
-static const u_int osd_nmethods[OSD_LAST + 1] = {
- [OSD_JAIL] = PR_MAXMETHOD,
+struct osd_master osdm[OSD_LAST + 1] = {
+ [OSD_JAIL] = { .osd_nmethods = PR_MAXMETHOD },
};
-static struct sx osd_module_lock[OSD_LAST + 1];
-static struct rmlock osd_object_lock[OSD_LAST + 1];
-static struct mtx osd_list_lock[OSD_LAST + 1];
-
static void
osd_default_destructor(void *value __unused)
{
@@ -102,12 +106,12 @@ osd_register(u_int type, osd_destructor_
if (destructor == NULL)
destructor = osd_default_destructor;
- sx_xlock(&osd_module_lock[type]);
+ sx_xlock(&osdm[type].osd_module_lock);
/*
* First, we try to find unused slot.
*/
- for (i = 0; i < osd_nslots[type]; i++) {
- if (osd_destructors[type][i] == NULL) {
+ for (i = 0; i < osdm[type].osd_ntslots; i++) {
+ if (osdm[type].osd_destructors[i] == NULL) {
OSD_DEBUG("Unused slot found (type=%u, slot=%u).",
type, i);
break;
@@ -116,31 +120,31 @@ osd_register(u_int type, osd_destructor_
/*
* If no unused slot was found, allocate one.
*/
- if (i == osd_nslots[type]) {
- osd_nslots[type]++;
- if (osd_nmethods[type] != 0)
- osd_methods[type] = realloc(osd_methods[type],
- sizeof(osd_method_t) * osd_nslots[type] *
- osd_nmethods[type], M_OSD, M_WAITOK);
- newptr = malloc(sizeof(osd_destructor_t) * osd_nslots[type],
- M_OSD, M_WAITOK);
- rm_wlock(&osd_object_lock[type]);
- bcopy(osd_destructors[type], newptr,
+ if (i == osdm[type].osd_ntslots) {
+ osdm[type].osd_ntslots++;
+ if (osdm[type].osd_nmethods != 0)
+ osdm[type].osd_methods = realloc(osdm[type].osd_methods,
+ sizeof(osd_method_t) * osdm[type].osd_ntslots *
+ osdm[type].osd_nmethods, M_OSD, M_WAITOK);
+ newptr = malloc(sizeof(osd_destructor_t) *
+ osdm[type].osd_ntslots, M_OSD, M_WAITOK);
+ rm_wlock(&osdm[type].osd_object_lock);
+ bcopy(osdm[type].osd_destructors, newptr,
sizeof(osd_destructor_t) * i);
- free(osd_destructors[type], M_OSD);
- osd_destructors[type] = newptr;
- rm_wunlock(&osd_object_lock[type]);
+ free(osdm[type].osd_destructors, M_OSD);
+ osdm[type].osd_destructors = newptr;
+ rm_wunlock(&osdm[type].osd_object_lock);
OSD_DEBUG("New slot allocated (type=%u, slot=%u).",
type, i + 1);
}
- osd_destructors[type][i] = destructor;
- if (osd_nmethods[type] != 0) {
- for (m = 0; m < osd_nmethods[type]; m++)
- osd_methods[type][i * osd_nmethods[type] + m] =
- methods != NULL ? methods[m] : NULL;
+ osdm[type].osd_destructors[i] = destructor;
+ if (osdm[type].osd_nmethods != 0) {
+ for (m = 0; m < osdm[type].osd_nmethods; m++)
+ osdm[type].osd_methods[i * osdm[type].osd_nmethods + m]
+ = methods != NULL ? methods[m] : NULL;
}
- sx_xunlock(&osd_module_lock[type]);
+ sx_xunlock(&osdm[type].osd_module_lock);
return (i + 1);
}
@@ -151,105 +155,142 @@ osd_deregister(u_int type, u_int slot)
KASSERT(type >= OSD_FIRST && type <= OSD_LAST, ("Invalid type."));
KASSERT(slot > 0, ("Invalid slot."));
- KASSERT(osd_destructors[type][slot - 1] != NULL, ("Unused slot."));
+ KASSERT(osdm[type].osd_destructors[slot - 1] != NULL, ("Unused slot."));
- sx_xlock(&osd_module_lock[type]);
- rm_wlock(&osd_object_lock[type]);
+ sx_xlock(&osdm[type].osd_module_lock);
+ rm_wlock(&osdm[type].osd_object_lock);
/*
* Free all OSD for the given slot.
*/
- mtx_lock(&osd_list_lock[type]);
- LIST_FOREACH_SAFE(osd, &osd_list[type], osd_next, tosd)
+ mtx_lock(&osdm[type].osd_list_lock);
+ LIST_FOREACH_SAFE(osd, &osdm[type].osd_list, osd_next, tosd)
do_osd_del(type, osd, slot, 1);
- mtx_unlock(&osd_list_lock[type]);
+ mtx_unlock(&osdm[type].osd_list_lock);
/*
* Set destructor to NULL to free the slot.
*/
- osd_destructors[type][slot - 1] = NULL;
- if (slot == osd_nslots[type]) {
- osd_nslots[type]--;
- osd_destructors[type] = realloc(osd_destructors[type],
- sizeof(osd_destructor_t) * osd_nslots[type], M_OSD,
+ osdm[type].osd_destructors[slot - 1] = NULL;
+ if (slot == osdm[type].osd_ntslots) {
+ osdm[type].osd_ntslots--;
+ osdm[type].osd_destructors = realloc(osdm[type].osd_destructors,
+ sizeof(osd_destructor_t) * osdm[type].osd_ntslots, M_OSD,
M_NOWAIT | M_ZERO);
- if (osd_nmethods[type] != 0)
- osd_methods[type] = realloc(osd_methods[type],
- sizeof(osd_method_t) * osd_nslots[type] *
- osd_nmethods[type], M_OSD, M_NOWAIT | M_ZERO);
+ if (osdm[type].osd_nmethods != 0)
+ osdm[type].osd_methods = realloc(osdm[type].osd_methods,
+ sizeof(osd_method_t) * osdm[type].osd_ntslots *
+ osdm[type].osd_nmethods, M_OSD, M_NOWAIT | M_ZERO);
/*
* We always reallocate to smaller size, so we assume it will
* always succeed.
*/
- KASSERT(osd_destructors[type] != NULL &&
- (osd_nmethods[type] == 0 || osd_methods[type] != NULL),
- ("realloc() failed"));
+ KASSERT(osdm[type].osd_destructors != NULL &&
+ (osdm[type].osd_nmethods == 0 ||
+ osdm[type].osd_methods != NULL), ("realloc() failed"));
OSD_DEBUG("Deregistration of the last slot (type=%u, slot=%u).",
type, slot);
} else {
OSD_DEBUG("Slot deregistration (type=%u, slot=%u).",
type, slot);
}
- rm_wunlock(&osd_object_lock[type]);
- sx_xunlock(&osd_module_lock[type]);
+ rm_wunlock(&osdm[type].osd_object_lock);
+ sx_xunlock(&osdm[type].osd_module_lock);
}
int
osd_set(u_int type, struct osd *osd, u_int slot, void *value)
{
+
+ return (osd_set_reserved(type, osd, slot, NULL, value));
+}
+
+void *
+osd_reserve(u_int slot)
+{
+
+ KASSERT(slot > 0, ("Invalid slot."));
+
+ OSD_DEBUG("Reserving slot array (slot=%u).", slot);
+ return (malloc(sizeof(void *) * slot, M_OSD, M_WAITOK | M_ZERO));
+}
+
+int
+osd_set_reserved(u_int type, struct osd *osd, u_int slot, void *rsv,
+ void *value)
+{
struct rm_priotracker tracker;
KASSERT(type >= OSD_FIRST && type <= OSD_LAST, ("Invalid type."));
KASSERT(slot > 0, ("Invalid slot."));
- KASSERT(osd_destructors[type][slot - 1] != NULL, ("Unused slot."));
+ KASSERT(osdm[type].osd_destructors[slot - 1] != NULL, ("Unused slot."));
- rm_rlock(&osd_object_lock[type], &tracker);
+ rm_rlock(&osdm[type].osd_object_lock, &tracker);
if (slot > osd->osd_nslots) {
+ void *newptr;
+
if (value == NULL) {
OSD_DEBUG(
"Not allocating null slot (type=%u, slot=%u).",
type, slot);
- rm_runlock(&osd_object_lock[type], &tracker);
+ rm_runlock(&osdm[type].osd_object_lock, &tracker);
+ if (rsv)
+ osd_free_reserved(rsv);
return (0);
- } else if (osd->osd_nslots == 0) {
+ }
+
+ /*
+ * Too few slots allocated here, so we need to extend or create
+ * the array.
+ */
+ if (rsv) {
/*
- * First OSD for this object, so we need to allocate
- * space and put it onto the list.
+ * Use the reserve passed in (assumed to be
+ * the right size).
*/
- osd->osd_slots = malloc(sizeof(void *) * slot, M_OSD,
- M_NOWAIT | M_ZERO);
- if (osd->osd_slots == NULL) {
- rm_runlock(&osd_object_lock[type], &tracker);
- return (ENOMEM);
+ newptr = rsv;
+ if (osd->osd_nslots != 0) {
+ memcpy(newptr, osd->osd_slots,
+ sizeof(void *) * osd->osd_nslots);
+ free(osd->osd_slots, M_OSD);
}
- osd->osd_nslots = slot;
- mtx_lock(&osd_list_lock[type]);
- LIST_INSERT_HEAD(&osd_list[type], osd, osd_next);
- mtx_unlock(&osd_list_lock[type]);
- OSD_DEBUG("Setting first slot (type=%u).", type);
} else {
- void *newptr;
-
- /*
- * Too few slots allocated here, needs to extend
- * the array.
- */
newptr = realloc(osd->osd_slots, sizeof(void *) * slot,
M_OSD, M_NOWAIT | M_ZERO);
if (newptr == NULL) {
- rm_runlock(&osd_object_lock[type], &tracker);
+ rm_runlock(&osdm[type].osd_object_lock,
+ &tracker);
return (ENOMEM);
}
- osd->osd_slots = newptr;
- osd->osd_nslots = slot;
- OSD_DEBUG("Growing slots array (type=%u).", type);
}
- }
+ if (osd->osd_nslots == 0) {
+ /*
+ * First OSD for this object, so we need to put it
+ * onto the list.
+ */
+ mtx_lock(&osdm[type].osd_list_lock);
+ LIST_INSERT_HEAD(&osdm[type].osd_list, osd, osd_next);
+ mtx_unlock(&osdm[type].osd_list_lock);
+ OSD_DEBUG("Setting first slot (type=%u).", type);
+ } else
+ OSD_DEBUG("Growing slots array (type=%u).", type);
+ osd->osd_slots = newptr;
+ osd->osd_nslots = slot;
+ } else if (rsv)
+ osd_free_reserved(rsv);
OSD_DEBUG("Setting slot value (type=%u, slot=%u, value=%p).", type,
slot, value);
osd->osd_slots[slot - 1] = value;
- rm_runlock(&osd_object_lock[type], &tracker);
+ rm_runlock(&osdm[type].osd_object_lock, &tracker);
return (0);
}
+void
+osd_free_reserved(void *rsv)
+{
+
+ OSD_DEBUG("Discarding reserved slot array.");
+ free(rsv, M_OSD);
+}
+
void *
osd_get(u_int type, struct osd *osd, u_int slot)
{
@@ -258,9 +299,9 @@ osd_get(u_int type, struct osd *osd, u_i
KASSERT(type >= OSD_FIRST && type <= OSD_LAST, ("Invalid type."));
KASSERT(slot > 0, ("Invalid slot."));
- KASSERT(osd_destructors[type][slot - 1] != NULL, ("Unused slot."));
+ KASSERT(osdm[type].osd_destructors[slot - 1] != NULL, ("Unused slot."));
- rm_rlock(&osd_object_lock[type], &tracker);
+ rm_rlock(&osdm[type].osd_object_lock, &tracker);
if (slot > osd->osd_nslots) {
value = NULL;
OSD_DEBUG("Slot doesn't exist (type=%u, slot=%u).", type, slot);
@@ -269,7 +310,7 @@ osd_get(u_int type, struct osd *osd, u_i
OSD_DEBUG("Returning slot value (type=%u, slot=%u, value=%p).",
type, slot, value);
}
- rm_runlock(&osd_object_lock[type], &tracker);
+ rm_runlock(&osdm[type].osd_object_lock, &tracker);
return (value);
}
@@ -278,9 +319,9 @@ osd_del(u_int type, struct osd *osd, u_i
{
struct rm_priotracker tracker;
- rm_rlock(&osd_object_lock[type], &tracker);
+ rm_rlock(&osdm[type].osd_object_lock, &tracker);
do_osd_del(type, osd, slot, 0);
- rm_runlock(&osd_object_lock[type], &tracker);
+ rm_runlock(&osdm[type].osd_object_lock, &tracker);
}
static void
@@ -290,7 +331,7 @@ do_osd_del(u_int type, struct osd *osd,
KASSERT(type >= OSD_FIRST && type <= OSD_LAST, ("Invalid type."));
KASSERT(slot > 0, ("Invalid slot."));
- KASSERT(osd_destructors[type][slot - 1] != NULL, ("Unused slot."));
+ KASSERT(osdm[type].osd_destructors[slot - 1] != NULL, ("Unused slot."));
OSD_DEBUG("Deleting slot (type=%u, slot=%u).", type, slot);
@@ -299,7 +340,7 @@ do_osd_del(u_int type, struct osd *osd,
return;
}
if (osd->osd_slots[slot - 1] != NULL) {
- osd_destructors[type][slot - 1](osd->osd_slots[slot - 1]);
+ osdm[type].osd_destructors[slot - 1](osd->osd_slots[slot - 1]);
osd->osd_slots[slot - 1] = NULL;
}
for (i = osd->osd_nslots - 1; i >= 0; i--) {
@@ -313,10 +354,10 @@ do_osd_del(u_int type, struct osd *osd,
/* No values left for this object. */
OSD_DEBUG("No more slots left (type=%u).", type);
if (!list_locked)
- mtx_lock(&osd_list_lock[type]);
+ mtx_lock(&osdm[type].osd_list_lock);
LIST_REMOVE(osd, osd_next);
if (!list_locked)
- mtx_unlock(&osd_list_lock[type]);
+ mtx_unlock(&osdm[type].osd_list_lock);
free(osd->osd_slots, M_OSD);
osd->osd_slots = NULL;
osd->osd_nslots = 0;
@@ -342,21 +383,21 @@ osd_call(u_int type, u_int method, void
int error, i;
KASSERT(type >= OSD_FIRST && type <= OSD_LAST, ("Invalid type."));
- KASSERT(method < osd_nmethods[type], ("Invalid method."));
+ KASSERT(method < osdm[type].osd_nmethods, ("Invalid method."));
/*
* Call this method for every slot that defines it, stopping if an
* error is encountered.
*/
error = 0;
- sx_slock(&osd_module_lock[type]);
- for (i = 0; i < osd_nslots[type]; i++) {
- methodfun =
- osd_methods[type][i * osd_nmethods[type] + method];
+ sx_slock(&osdm[type].osd_module_lock);
+ for (i = 0; i < osdm[type].osd_ntslots; i++) {
+ methodfun = osdm[type].osd_methods[i * osdm[type].osd_nmethods +
+ method];
if (methodfun != NULL && (error = methodfun(obj, data)) != 0)
break;
}
- sx_sunlock(&osd_module_lock[type]);
+ sx_sunlock(&osdm[type].osd_module_lock);
return (error);
}
@@ -374,14 +415,14 @@ osd_exit(u_int type, struct osd *osd)
return;
}
- rm_rlock(&osd_object_lock[type], &tracker);
+ rm_rlock(&osdm[type].osd_object_lock, &tracker);
for (i = 1; i <= osd->osd_nslots; i++) {
- if (osd_destructors[type][i - 1] != NULL)
+ if (osdm[type].osd_destructors[i - 1] != NULL)
do_osd_del(type, osd, i, 0);
else
OSD_DEBUG("Unused slot (type=%u, slot=%u).", type, i);
}
- rm_runlock(&osd_object_lock[type], &tracker);
+ rm_runlock(&osdm[type].osd_object_lock, &tracker);
OSD_DEBUG("Object exit (type=%u).", type);
}
@@ -391,13 +432,13 @@ osd_init(void *arg __unused)
u_int i;
for (i = OSD_FIRST; i <= OSD_LAST; i++) {
- osd_nslots[i] = 0;
- LIST_INIT(&osd_list[i]);
- sx_init(&osd_module_lock[i], "osd_module");
- rm_init(&osd_object_lock[i], "osd_object");
- mtx_init(&osd_list_lock[i], "osd_list", NULL, MTX_DEF);
- osd_destructors[i] = NULL;
- osd_methods[i] = NULL;
+ sx_init(&osdm[i].osd_module_lock, "osd_module");
+ rm_init(&osdm[i].osd_object_lock, "osd_object");
+ mtx_init(&osdm[i].osd_list_lock, "osd_list", NULL, MTX_DEF);
+ LIST_INIT(&osdm[i].osd_list);
+ osdm[i].osd_destructors = NULL;
+ osdm[i].osd_ntslots = 0;
+ osdm[i].osd_methods = NULL;
}
}
SYSINIT(osd, SI_SUB_LOCK, SI_ORDER_ANY, osd_init, NULL);
Modified: stable/10/sys/sys/osd.h
==============================================================================
--- stable/10/sys/sys/osd.h Sat Apr 30 03:19:07 2016 (r298833)
+++ stable/10/sys/sys/osd.h Sat Apr 30 04:01:22 2016 (r298834)
@@ -59,6 +59,10 @@ int osd_register(u_int type, osd_destruc
void osd_deregister(u_int type, u_int slot);
int osd_set(u_int type, struct osd *osd, u_int slot, void *value);
+void *osd_reserve(u_int slot);
+int osd_set_reserved(u_int type, struct osd *osd, u_int slot, void *rsv,
+ void *value);
+void osd_free_reserved(void *rsv);
void *osd_get(u_int type, struct osd *osd, u_int slot);
void osd_del(u_int type, struct osd *osd, u_int slot);
int osd_call(u_int type, u_int method, void *obj, void *data);
@@ -71,6 +75,8 @@ void osd_exit(u_int type, struct osd *os
osd_deregister(OSD_THREAD, (slot))
#define osd_thread_set(td, slot, value)
\
osd_set(OSD_THREAD, &(td)->td_osd, (slot), (value))
+#define osd_thread_set_reserved(td, slot, rsv, value)
\
+ osd_set_reserved(OSD_THREAD, &(td)->td_osd, (slot), (rsv), (value))
#define osd_thread_get(td, slot)
\
osd_get(OSD_THREAD, &(td)->td_osd, (slot))
#define osd_thread_del(td, slot) do {
\
@@ -88,6 +94,8 @@ void osd_exit(u_int type, struct osd *os
osd_deregister(OSD_JAIL, (slot))
#define osd_jail_set(pr, slot, value)
\
osd_set(OSD_JAIL, &(pr)->pr_osd, (slot), (value))
+#define osd_jail_set_reserved(pr, slot, rsv, value)
\
+ osd_set_reserved(OSD_JAIL, &(pr)->pr_osd, (slot), (rsv), (value))
#define osd_jail_get(pr, slot)
\
osd_get(OSD_JAIL, &(pr)->pr_osd, (slot))
#define osd_jail_del(pr, slot)
\
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