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Fix a minor swap leak.

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Previously, the UPAGES/KSTACK area of processes/threads would leak memory
at the time that a previously swapped process was terminated.  Lukcily, the
leak was only 12K/proc, so it was unlikely to be a major problem unless you
had an undersized swap partition.

Submitted by:	dillon
Reviewed by:	silby
MFC after:	1 week
This commit is contained in:
Mike Silbersack 2002-02-28 07:41:12 +00:00
parent 25416dcedf
commit f4e18c9afd
4 changed files with 80 additions and 0 deletions
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20
sys/alpha/alpha/pmap.c
View File

@ -990,6 +990,16 @@ pmap_dispose_proc(p)
vm_page_unwire(m, 0);
vm_page_free(m);
}
/*
* If the process got swapped out some of its UPAGES might have gotten
* swapped. Just get rid of the object to clean up the swap use
* proactively. NOTE! might block waiting for paging I/O to complete.
*/
if (upobj->type == OBJT_SWAP) {
p->p_upages_obj = NULL;
vm_object_deallocate(upobj);
}
}
/*
@ -1153,6 +1163,16 @@ pmap_dispose_thread(td)
vm_page_unwire(m, 0);
vm_page_free(m);
}
/*
* If the thread got swapped out some of its KSTACK might have gotten
* swapped. Just get rid of the object to clean up the swap use
* proactively. NOTE! might block waiting for paging I/O to complete.
*/
if (ksobj->type == OBJT_SWAP) {
td->td_kstack_obj = NULL;
vm_object_deallocate(ksobj);
}
}
/*

20
sys/amd64/amd64/pmap.c
View File

@ -922,6 +922,16 @@ pmap_dispose_proc(p)
#ifdef I386_CPU
invltlb();
#endif
/*
* If the process got swapped out some of its UPAGES might have gotten
* swapped. Just get rid of the object to clean up the swap use
* proactively. NOTE! might block waiting for paging I/O to complete.
*/
if (upobj->type == OBJT_SWAP) {
p->p_upages_obj = NULL;
vm_object_deallocate(upobj);
}
}
/*
@ -1107,6 +1117,16 @@ pmap_dispose_thread(td)
#ifdef I386_CPU
invltlb();
#endif
/*
* If the thread got swapped out some of its KSTACK might have gotten
* swapped. Just get rid of the object to clean up the swap use
* proactively. NOTE! might block waiting for paging I/O to complete.
*/
if (ksobj->type == OBJT_SWAP) {
td->td_kstack_obj = NULL;
vm_object_deallocate(ksobj);
}
}
/*

20
sys/i386/i386/pmap.c
View File

@ -922,6 +922,16 @@ pmap_dispose_proc(p)
#ifdef I386_CPU
invltlb();
#endif
/*
* If the process got swapped out some of its UPAGES might have gotten
* swapped. Just get rid of the object to clean up the swap use
* proactively. NOTE! might block waiting for paging I/O to complete.
*/
if (upobj->type == OBJT_SWAP) {
p->p_upages_obj = NULL;
vm_object_deallocate(upobj);
}
}
/*
@ -1107,6 +1117,16 @@ pmap_dispose_thread(td)
#ifdef I386_CPU
invltlb();
#endif
/*
* If the thread got swapped out some of its KSTACK might have gotten
* swapped. Just get rid of the object to clean up the swap use
* proactively. NOTE! might block waiting for paging I/O to complete.
*/
if (ksobj->type == OBJT_SWAP) {
td->td_kstack_obj = NULL;
vm_object_deallocate(ksobj);
}
}
/*

20
sys/sparc64/sparc64/pmap.c
View File

@ -853,6 +853,16 @@ pmap_dispose_proc(struct proc *p)
vm_page_free(m);
}
pmap_qremove(up, UAREA_PAGES);
/*
* If the process got swapped out some of its UPAGES might have gotten
* swapped. Just get rid of the object to clean up the swap use
* proactively. NOTE! might block waiting for paging I/O to complete.
*/
if (upobj->type == OBJT_SWAP) {
p->p_upages_obj = NULL;
vm_object_deallocate(upobj);
}
}
/*
@ -995,6 +1005,16 @@ pmap_dispose_thread(struct thread *td)
vm_page_free(m);
}
pmap_qremove(ks, KSTACK_PAGES);
/*
* If the thread got swapped out some of its KSTACK might have gotten
* swapped. Just get rid of the object to clean up the swap use
* proactively. NOTE! might block waiting for paging I/O to complete.
*/
if (ksobj->type == OBJT_SWAP) {
td->td_kstack_obj = NULL;
vm_object_deallocate(ksobj);
}
}
/*