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| author | Konstantin Belousov <kib@FreeBSD.org> | 2011-07-09 15:21:10 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2011-07-09 15:21:10 +0000 |
| commit | 2801687d568a6efada994a5ed1f3f4824f48f6d3 (patch) | |
| tree | 2e4765a311744587c5b4fff81d2ac15360a89ca0 /sys/vm/vm_extern.h | |
| parent | 58f9394c502349d6f26cbc6b77396b690ab9e938 (diff) | |
| download | src-2801687d568a6efada994a5ed1f3f4824f48f6d3.tar.gz src-2801687d568a6efada994a5ed1f3f4824f48f6d3.zip | |
Add a facility to disable processing page faults. When activated,
uiomove generates EFAULT if any accessed address is not mapped, as
opposed to handling the fault.
Sponsored by: The FreeBSD Foundation
Reviewed by: alc (previous version)
Notes
Notes:
svn path=/head/; revision=223889
Diffstat (limited to 'sys/vm/vm_extern.h')
| -rw-r--r-- | sys/vm/vm_extern.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/vm/vm_extern.h b/sys/vm/vm_extern.h index ae8e5787f7fa..548cdb4be177 100644 --- a/sys/vm/vm_extern.h +++ b/sys/vm/vm_extern.h @@ -61,6 +61,8 @@ int useracc(void *, int, int); int vm_fault(vm_map_t, vm_offset_t, vm_prot_t, int); void vm_fault_copy_entry(vm_map_t, vm_map_t, vm_map_entry_t, vm_map_entry_t, vm_ooffset_t *); +int vm_fault_disable_pagefaults(void); +void vm_fault_enable_pagefaults(int save); int vm_fault_hold(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type, int fault_flags, vm_page_t *m_hold); int vm_fault_quick_hold_pages(vm_map_t map, vm_offset_t addr, vm_size_t len, |