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Fix _zget() so that it checks the return from kmem_alloc(), to avoid

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zttempting to bzero NULL when the kernel map fills up.  _zget() will
now return NULL as it seems it was originally intended to do.
This commit is contained in:
Mike Smith 2000-04-04 21:00:39 +00:00
parent 8d9f1945b9
commit e36bc62387
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=59017
1 changed files with 9 additions and 3 deletions
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12
sys/vm/vm_zone.c
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@ -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;