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| author | alc <alc@FreeBSD.org> | 1999-11-23 06:51:28 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 1999-11-23 06:51:28 +0000 |
| commit | 5d1cd5631b7c455216547ca3831b9352a824a7ee (patch) | |
| tree | 998dfb42bec74225475941afcadc2de9b5747cc0 /sys/vm | |
| parent | 8a8ecd0abc499a9487cc5b0388a47f40da54f36a (diff) | |
| download | FreeBSD-src-5d1cd5631b7c455216547ca3831b9352a824a7ee.zip FreeBSD-src-5d1cd5631b7c455216547ca3831b9352a824a7ee.tar.gz | |
Correct the following error: vm_map_pageable() on a COW'ed (post-fork)
vm_map always failed because vm_map_lookup() looked at
"vm_map_entry->wired_count" instead of "(vm_map_entry->eflags &
MAP_ENTRY_USER_WIRED)". The effect was that many page
wiring operations by sysctl were (silently) failing.
Diffstat (limited to 'sys/vm')
| -rw-r--r-- | sys/vm/vm_map.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c index 5f429d0..ca42708 100644 --- a/sys/vm/vm_map.c +++ b/sys/vm/vm_map.c @@ -2510,10 +2510,11 @@ RetryLookup:; RETURN(KERN_PROTECTION_FAILURE); } - if (entry->wired_count && (fault_type & VM_PROT_WRITE) && - (entry->eflags & MAP_ENTRY_COW) && - (fault_typea & VM_PROT_OVERRIDE_WRITE) == 0) { - RETURN(KERN_PROTECTION_FAILURE); + if ((entry->eflags & MAP_ENTRY_USER_WIRED) && + (entry->eflags & MAP_ENTRY_COW) && + (fault_type & VM_PROT_WRITE) && + (fault_typea & VM_PROT_OVERRIDE_WRITE) == 0) { + RETURN(KERN_PROTECTION_FAILURE); } /* |
