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vm_kern: in unback, init cursor while unlocked

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In kmem_unback(), take one small bit of code out of the region where
the write lock is held.

Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D49834
This commit is contained in:
Doug Moore 2025-04-15 11:42:06 -05:00
parent 0fc3c29fb3
commit adc33d3288
1 changed files with 1 additions and 1 deletions
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2
sys/vm/vm_kern.c
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@ -650,8 +650,8 @@ _kmem_unback(vm_object_t object, vm_offset_t addr, vm_size_t size)
pmap_remove(kernel_pmap, addr, addr + size);
offset = addr - VM_MIN_KERNEL_ADDRESS;
end = offset + size;
VM_OBJECT_WLOCK(object);
vm_page_iter_init(&pages, object);
VM_OBJECT_WLOCK(object);
m = vm_radix_iter_lookup(&pages, atop(offset));
domain = vm_page_domain(m);
if (__predict_true((m->oflags & VPO_KMEM_EXEC) == 0))