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| author | jhb <jhb@FreeBSD.org> | 2009-07-24 13:50:29 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2009-07-24 13:50:29 +0000 |
| commit | 44220d7e1e07bbf1c88215543c5877abcdb88d29 (patch) | |
| tree | 9a9fb32ead80921ec7937e7a600e46e446366436 /sys/vm/vm_fault.c | |
| parent | 4064b20ecefb589d0b9290e558c0abfc5229c120 (diff) | |
| download | FreeBSD-src-44220d7e1e07bbf1c88215543c5877abcdb88d29.zip FreeBSD-src-44220d7e1e07bbf1c88215543c5877abcdb88d29.tar.gz | |
Add a new type of VM object: OBJT_SG. An OBJT_SG object is very similar to
a device pager (OBJT_DEVICE) object in that it uses fictitious pages to
provide aliases to other memory addresses. The primary difference is that
it uses an sglist(9) to determine the physical addresses for a given offset
into the object instead of invoking the d_mmap() method in a device driver.
Reviewed by: alc
Approved by: re (kensmith)
MFC after: 2 weeks
Diffstat (limited to 'sys/vm/vm_fault.c')
| -rw-r--r-- | sys/vm/vm_fault.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/vm/vm_fault.c b/sys/vm/vm_fault.c index ff8852b..98b6b09 100644 --- a/sys/vm/vm_fault.c +++ b/sys/vm/vm_fault.c @@ -472,7 +472,8 @@ readrest: (fs.first_object == fs.object || (is_first_object_locked = VM_OBJECT_TRYLOCK(fs.first_object))) && fs.first_object->type != OBJT_DEVICE && - fs.first_object->type != OBJT_PHYS) { + fs.first_object->type != OBJT_PHYS && + fs.first_object->type != OBJT_SG) { vm_pindex_t firstpindex, tmppindex; if (fs.first_pindex < 2 * VM_FAULT_READ) |
