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sys/dev/filemon/filemon.c
| Show First 20 Lines • Show All 204 Lines • ▼ Show 20 Lines | |||||
| } | } | ||||
| /* | /* | ||||
| * Invalidate the passed filemon in all processes. | * Invalidate the passed filemon in all processes. | ||||
| */ | */ | ||||
| static void | static void | ||||
| filemon_untrack_processes(struct filemon *filemon) | filemon_untrack_processes(struct filemon *filemon) | ||||
| { | { | ||||
| VPS_ITERATOR_DECL(vps_iter); | |||||
| struct proc *p; | struct proc *p; | ||||
| sx_assert(&filemon->lock, SA_XLOCKED); | sx_assert(&filemon->lock, SA_XLOCKED); | ||||
| /* Avoid allproc loop if there is no need. */ | /* Avoid allproc loop if there is no need. */ | ||||
| if (filemon->proccnt == 0) | if (filemon->proccnt == 0) | ||||
| return; | return; | ||||
| /* | /* | ||||
| * Processes in this list won't go away while here since | * Processes in this list won't go away while here since | ||||
| * filemon_event_process_exit() will lock on filemon->lock | * filemon_event_process_exit() will lock on filemon->lock | ||||
| * which we hold. | * which we hold. | ||||
| */ | */ | ||||
| sx_slock(&allproc_lock); | VPS_LIST_RLOCK(); | ||||
| VPS_FOREACH(vps_iter) { | |||||
| CURVPS_SET(vps_iter); | |||||
| sx_slock(&V_allproc_lock); | |||||
| FOREACH_PROC_IN_SYSTEM(p) { | FOREACH_PROC_IN_SYSTEM(p) { | ||||
| /* | /* | ||||
| * No PROC_LOCK is needed to compare here since it is | * No PROC_LOCK is needed to compare here since it is | ||||
| * guaranteed to not change since we have its filemon | * guaranteed to not change since we have its filemon | ||||
| * locked. Everything that changes this p_filemon will | * locked. Everything that changes this p_filemon will | ||||
| * be locked on it. | * be locked on it. | ||||
| */ | */ | ||||
| if (p->p_filemon == filemon) | if (p->p_filemon == filemon) | ||||
| filemon_proc_drop(p); | filemon_proc_drop(p); | ||||
| } | } | ||||
| sx_sunlock(&allproc_lock); | sx_sunlock(&V_allproc_lock); | ||||
| CURVPS_RESTORE(); | |||||
| } | |||||
| VPS_LIST_RUNLOCK(); | |||||
| /* | /* | ||||
| * It's possible some references were acquired but will be | * It's possible some references were acquired but will be | ||||
| * dropped shortly as they are restricted from being | * dropped shortly as they are restricted from being | ||||
| * inherited. There is at least the reference in cdevpriv remaining. | * inherited. There is at least the reference in cdevpriv remaining. | ||||
| */ | */ | ||||
| KASSERT(filemon->refcnt > 0, ("%s: filemon %p should have " | KASSERT(filemon->refcnt > 0, ("%s: filemon %p should have " | ||||
| "references still.", __func__, filemon)); | "references still.", __func__, filemon)); | ||||
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