diff options
| author | msmith <msmith@FreeBSD.org> | 2000-04-04 21:00:39 +0000 |
|---|---|---|
| committer | msmith <msmith@FreeBSD.org> | 2000-04-04 21:00:39 +0000 |
| commit | 9942d38efa51aa6aa1eff896d00233fa97047309 (patch) | |
| tree | 9dab0af6dbde7a7a96a3d8b32a06772d4f9a383f /sys/vm/vm_zone.c | |
| parent | 96e6d0e350ef149f900cade897084746205c4322 (diff) | |
| download | FreeBSD-src-9942d38efa51aa6aa1eff896d00233fa97047309.zip FreeBSD-src-9942d38efa51aa6aa1eff896d00233fa97047309.tar.gz | |
Fix _zget() so that it checks the return from kmem_alloc(), to avoid
zttempting to bzero NULL when the kernel map fills up. _zget() will
now return NULL as it seems it was originally intended to do.
Diffstat (limited to 'sys/vm/vm_zone.c')
| -rw-r--r-- | sys/vm/vm_zone.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/sys/vm/vm_zone.c b/sys/vm/vm_zone.c index b53cfa0..b1007dc 100644 --- a/sys/vm/vm_zone.c +++ b/sys/vm/vm_zone.c @@ -334,7 +334,8 @@ _zget(vm_zone_t z) #ifdef SMP simple_lock(&z->zlock); #endif - zone_kmem_pages += z->zalloc; + if (item != NULL) + zone_kmem_pages += z->zalloc; splx(s); } else { #ifdef SMP @@ -344,9 +345,14 @@ _zget(vm_zone_t z) #ifdef SMP simple_lock(&z->zlock); #endif - zone_kern_pages += z->zalloc; + if (item != NULL) + zone_kern_pages += z->zalloc; + } + if (item != NULL) { + bzero(item, nbytes); + } else { + nbytes = 0; } - bzero(item, nbytes); nitems = nbytes / z->zsize; } z->ztotal += nitems; |
