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If a process is over its resource limit for datasize, still allow

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it to lower its memory usage. This was mentioned on the mailing
lists ages ago, and I've lost the name of the person who brought
it up.

Reviewed by:	alc
This commit is contained in:
David Malone 2000-10-06 13:03:50 +00:00
parent 016f1c3e23
commit a77c9610f2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=66748
1 changed files with 7 additions and 3 deletions
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10
sys/vm/vm_unix.c
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@ -73,8 +73,14 @@ obreak(p, uap)
base = round_page((vm_offset_t) vm->vm_daddr);
new = round_page((vm_offset_t)uap->nsize);
old = base + ctob(vm->vm_dsize);
if (new > base) {
if ((new - base) > (unsigned) p->p_rlimit[RLIMIT_DATA].rlim_cur)
/*
* We check resource limits here, but alow processes to
* reduce their usage, even if they remain over the limit.
*/
if (new > old &&
(new - base) > (unsigned) p->p_rlimit[RLIMIT_DATA].rlim_cur)
return ENOMEM;
if (new >= VM_MAXUSER_ADDRESS)
return (ENOMEM);
@ -87,8 +93,6 @@ obreak(p, uap)
return EINVAL;
}
old = base + ctob(vm->vm_dsize);
if (new > old) {
vm_size_t diff;