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author | alc <alc@FreeBSD.org> | 2009-11-03 17:15:15 +0000 |
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committer | alc <alc@FreeBSD.org> | 2009-11-03 17:15:15 +0000 |
commit | 4d317ded24c674d9ce64ff411ba292b955353b75 (patch) | |
tree | 457c4d498d4ebb8bb2514550dfc58e133c89e7ab /sys | |
parent | 1c940ef4f4e225185b488e5cf1498863dfbbcebb (diff) | |
download | FreeBSD-src-4d317ded24c674d9ce64ff411ba292b955353b75.zip FreeBSD-src-4d317ded24c674d9ce64ff411ba292b955353b75.tar.gz |
Eliminate a bit of hackery from vm_fault(). The operations that this
hackery sought to prevent are now properly supported by vm_map_protect().
(See r198505.)
Reviewed by: kib
Diffstat (limited to 'sys')
-rw-r--r-- | sys/vm/vm_fault.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/sys/vm/vm_fault.c b/sys/vm/vm_fault.c index de87183..55b4173 100644 --- a/sys/vm/vm_fault.c +++ b/sys/vm/vm_fault.c @@ -264,17 +264,6 @@ RetryFault:; &fs.entry, &fs.first_object, &fs.first_pindex, &prot, &wired); if (result != KERN_SUCCESS) return (result); - - /* - * If we don't COW now, on a user wire, the user will never - * be able to write to the mapping. If we don't make this - * restriction, the bookkeeping would be nearly impossible. - * - * XXX The following assignment modifies the map without - * holding a write lock on it. - */ - if ((fs.entry->protection & VM_PROT_WRITE) == 0) - fs.entry->max_protection &= ~VM_PROT_WRITE; } map_generation = fs.map->timestamp; |