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| author | alc <alc@FreeBSD.org> | 2014-05-23 16:22:36 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2014-05-23 16:22:36 +0000 |
| commit | 549a5817c0ebaf4934c376d9bab4bf1bfefb0471 (patch) | |
| tree | 7ec6ad6d8b227f6a758502201d5127396bd55d0a /sys/vm/vm_kern.c | |
| parent | a6e74de42f82dada17c1a92bbe93462a18af3b09 (diff) | |
| download | FreeBSD-src-549a5817c0ebaf4934c376d9bab4bf1bfefb0471.zip FreeBSD-src-549a5817c0ebaf4934c376d9bab4bf1bfefb0471.tar.gz | |
There is no reason to perform the pmap_remove() on the kernel pmap while
the kmem object lock is held. Do the pmap_remove() before acquiring the
kmem object lock.
MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division
Diffstat (limited to 'sys/vm/vm_kern.c')
| -rw-r--r-- | sys/vm/vm_kern.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/vm/vm_kern.c b/sys/vm/vm_kern.c index dd075c1..c0e56ce 100644 --- a/sys/vm/vm_kern.c +++ b/sys/vm/vm_kern.c @@ -396,9 +396,9 @@ kmem_unback(vm_object_t object, vm_offset_t addr, vm_size_t size) KASSERT(object == kmem_object || object == kernel_object, ("kmem_unback: only supports kernel objects.")); + pmap_remove(kernel_pmap, addr, addr + size); offset = addr - VM_MIN_KERNEL_ADDRESS; VM_OBJECT_WLOCK(object); - pmap_remove(kernel_pmap, addr, addr + size); for (i = 0; i < size; i += PAGE_SIZE) { m = vm_page_lookup(object, OFF_TO_IDX(offset + i)); vm_page_unwire(m, 0); |
