diff --git a/sys/kern/kern_osd.c b/sys/kern/kern_osd.c --- a/sys/kern/kern_osd.c +++ b/sys/kern/kern_osd.c @@ -278,25 +278,34 @@ } void * -osd_get(u_int type, struct osd *osd, u_int slot) +osd_get_unlocked(u_int type, struct osd *osd, u_int slot) { - struct rm_priotracker tracker; void *value; - KASSERT(type >= OSD_FIRST && type <= OSD_LAST, ("Invalid type.")); - KASSERT(slot > 0, ("Invalid slot.")); - - rm_rlock(&osdm[type].osd_object_lock, &tracker); KASSERT(osdm[type].osd_destructors[slot - 1] != NULL, ("Unused slot.")); if (slot > osd->osd_nslots) { value = NULL; OSD_DEBUG("Slot doesn't exist (type=%u, slot=%u).", type, slot); } else { - value = osd->osd_slots[slot - 1]; + value = atomic_load_ptr(&osd->osd_slots[slot - 1]); OSD_DEBUG("Returning slot value (type=%u, slot=%u, value=%p).", type, slot, value); } + return (value); +} + +void * +osd_get(u_int type, struct osd *osd, u_int slot) +{ + struct rm_priotracker tracker; + void *value; + + KASSERT(type >= OSD_FIRST && type <= OSD_LAST, ("Invalid type.")); + KASSERT(slot > 0, ("Invalid slot.")); + + rm_rlock(&osdm[type].osd_object_lock, &tracker); + value = osd_get_unlocked(type, osd, slot); rm_runlock(&osdm[type].osd_object_lock, &tracker); return (value); } diff --git a/sys/sys/osd.h b/sys/sys/osd.h --- a/sys/sys/osd.h +++ b/sys/sys/osd.h @@ -64,6 +64,7 @@ void *value); void osd_free_reserved(void **rsv); void *osd_get(u_int type, struct osd *osd, u_int slot); +void *osd_get_unlocked(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); @@ -79,6 +80,8 @@ 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_get_unlocked(td, slot) \ + osd_get_unlocked(OSD_THREAD, &(td)->td_osd, (slot)) #define osd_thread_del(td, slot) do { \ KASSERT((td) == curthread, ("Not curthread.")); \ osd_del(OSD_THREAD, &(td)->td_osd, (slot)); \ @@ -98,6 +101,8 @@ 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_get_unlocked(pr, slot) \ + osd_get_unlocked(OSD_JAIL, &(pr)->pr_osd, (slot)) #define osd_jail_del(pr, slot) \ osd_del(OSD_JAIL, &(pr)->pr_osd, (slot)) #define osd_jail_call(pr, method, data) \