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| author | alc <alc@FreeBSD.org> | 2010-08-28 16:57:07 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2010-08-28 16:57:07 +0000 |
| commit | 115cb6b29fac1d05cd165127e0c586a5da89e98b (patch) | |
| tree | d4abb08d97bb3bfebf99cc70214a916561996d4d /sys/vm | |
| parent | 76d72447281953457a8a3a319fdc80070bc5152c (diff) | |
| download | FreeBSD-src-115cb6b29fac1d05cd165127e0c586a5da89e98b.zip FreeBSD-src-115cb6b29fac1d05cd165127e0c586a5da89e98b.tar.gz | |
Add the MAP_PREFAULT_READ option to mmap(2).
Reviewed by: jhb, kib
Diffstat (limited to 'sys/vm')
| -rw-r--r-- | sys/vm/vm_mmap.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/vm/vm_mmap.c b/sys/vm/vm_mmap.c index bd9f98f..2071cc7 100644 --- a/sys/vm/vm_mmap.c +++ b/sys/vm/vm_mmap.c @@ -1467,9 +1467,10 @@ vm_mmap(vm_map_t map, vm_offset_t *addr, vm_size_t size, vm_prot_t prot, */ if (handle == 0) foff = 0; - } else { + } else if (flags & MAP_PREFAULT_READ) + docow = MAP_PREFAULT; + else docow = MAP_PREFAULT_PARTIAL; - } if ((flags & (MAP_ANON|MAP_SHARED)) == 0) docow |= MAP_COPY_ON_WRITE; |
