diff options
| author | Justus Winter <4winter@informatik.uni-hamburg.de> | 2014-01-02 15:54:17 +0100 |
|---|---|---|
| committer | Justus Winter <4winter@informatik.uni-hamburg.de> | 2014-01-03 00:42:40 +0100 |
| commit | 2f8477fb3bb1b95d2f814d76cf37777ec58c4c76 (patch) | |
| tree | c28e1b3b4e14c3dc3f044f12fc71dc3252a7cfa1 | |
| parent | 93b9dca0226cd08fd07db0ec72c34800720309be (diff) | |
vm: reduce the size of struct vm_page
Previously, the bit field left 31 bits unused. By reducing the size
of wire_count by one bit, the size of the whole struct is reduced by
four bytes.
* vm/vm_page.h (struct vm_page): Reduce the size of wire_count to 15
bits.
| -rw-r--r-- | vm/vm_page.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/vm/vm_page.h b/vm/vm_page.h index 339d355..4fe1b41 100644 --- a/vm/vm_page.h +++ b/vm/vm_page.h @@ -84,7 +84,7 @@ struct vm_page { vm_object_t object; /* which object am I in (O,P) */ vm_offset_t offset; /* offset into that object (O,P) */ - unsigned int wire_count:16, /* how many wired down maps use me? + unsigned int wire_count:15, /* how many wired down maps use me? (O&P) */ /* boolean_t */ inactive:1, /* page is in inactive list (P) */ active:1, /* page is in active list (P) */ |