diff options
| author | dyson <dyson@FreeBSD.org> | 1996-12-14 17:54:17 +0000 |
|---|---|---|
| committer | dyson <dyson@FreeBSD.org> | 1996-12-14 17:54:17 +0000 |
| commit | 765e5fd282a4abb7b729faacccf7be3eacb1fed1 (patch) | |
| tree | b1d0372c1df868572557b6875727b2db2a4648f4 /sys/vm/vm_map.h | |
| parent | 7c80d56f5026a662a0d69806f8719ff816a95490 (diff) | |
| download | FreeBSD-src-765e5fd282a4abb7b729faacccf7be3eacb1fed1.zip FreeBSD-src-765e5fd282a4abb7b729faacccf7be3eacb1fed1.tar.gz | |
Implement closer-to POSIX mlock semantics. The major difference is
that we do allow mlock to span unallocated regions (of course, not
mlocking them.) We also allow mlocking of RO regions (which the old
code couldn't.) The restriction there is that once a RO region is
wired (mlocked), it cannot be debugged (or EVER written to.)
Under normal usage, the new mlock code will be a significant improvement
over our old stuff.
Diffstat (limited to 'sys/vm/vm_map.h')
| -rw-r--r-- | sys/vm/vm_map.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/sys/vm/vm_map.h b/sys/vm/vm_map.h index af36fb4..c1450f1 100644 --- a/sys/vm/vm_map.h +++ b/sys/vm/vm_map.h @@ -61,7 +61,7 @@ * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. * - * $Id: vm_map.h,v 1.16 1996/11/30 22:41:48 dyson Exp $ + * $Id: vm_map.h,v 1.17 1996/12/07 00:03:43 dyson Exp $ */ /* @@ -108,7 +108,8 @@ struct vm_map_entry { is_sub_map:1, /* Is "object" a submap? */ copy_on_write:1, /* is data copy-on-write */ needs_copy:1, /* does object need to be copied */ - nofault:1; /* should never fault */ + nofault:1, /* should never fault */ + user_wired:1; /* wired by user */ /* Only in task maps: */ vm_prot_t protection; /* protection code */ vm_prot_t max_protection; /* maximum protection */ @@ -210,6 +211,13 @@ typedef struct { #define MAP_COPY_ON_WRITE 0x2 #define MAP_NOFAULT 0x4 +/* + * vm_fault option flags + */ +#define VM_FAULT_NORMAL 0 +#define VM_FAULT_CHANGE_WIRING 1 +#define VM_FAULT_USER_WIRE 2 + #ifdef KERNEL extern vm_offset_t kentry_data; extern vm_size_t kentry_data_size; @@ -230,6 +238,7 @@ int vm_map_lookup __P((vm_map_t *, vm_offset_t, vm_prot_t, vm_map_entry_t *, vm_ void vm_map_lookup_done __P((vm_map_t, vm_map_entry_t)); boolean_t vm_map_lookup_entry __P((vm_map_t, vm_offset_t, vm_map_entry_t *)); int vm_map_pageable __P((vm_map_t, vm_offset_t, vm_offset_t, boolean_t)); +int vm_map_user_pageable __P((vm_map_t, vm_offset_t, vm_offset_t, boolean_t)); int vm_map_clean __P((vm_map_t, vm_offset_t, vm_offset_t, boolean_t, boolean_t)); int vm_map_protect __P((vm_map_t, vm_offset_t, vm_offset_t, vm_prot_t, boolean_t)); void vm_map_reference __P((vm_map_t)); |
