diff options
| author | Richard Braun <rbraun@sceen.net> | 2016-03-13 13:48:44 +0100 |
|---|---|---|
| committer | Richard Braun <rbraun@sceen.net> | 2016-03-13 13:49:16 +0100 |
| commit | 48bec088b6a4a4674acc5b1ea919c47a5180da98 (patch) | |
| tree | 66c78444e45b492f9e20a18ad54f12fb9512a274 /vm | |
| parent | db656dd03b9b0a2bc955c43c58a2ef88f2bdf35c (diff) | |
| download | gnumach-48bec088b6a4a4674acc5b1ea919c47a5180da98.tar.gz gnumach-48bec088b6a4a4674acc5b1ea919c47a5180da98.tar.bz2 gnumach-48bec088b6a4a4674acc5b1ea919c47a5180da98.zip | |
Avoid panics on physical memory exhaustion
* vm/vm_resident (vm_page_grab_contig): Return NULL instead of calling
panic on memory exhaustion.
Diffstat (limited to 'vm')
| -rw-r--r-- | vm/vm_resident.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/vm/vm_resident.c b/vm/vm_resident.c index fa7a337b..79481a7b 100644 --- a/vm/vm_resident.c +++ b/vm/vm_resident.c @@ -905,8 +905,10 @@ vm_page_t vm_page_grab_contig( /* TODO Allow caller to pass type */ mem = vm_page_alloc_pa(order, selector, VM_PT_KERNEL); - if (mem == NULL) - panic("vm_page_grab_contig"); + if (mem == NULL) { + simple_unlock(&vm_page_queue_free_lock); + return NULL; + } for (i = 0; i < nr_pages; i++) { mem[i].free = FALSE; |