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Make some style and white-space changes to the copy-on-write path through

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vm_fault(); remove a pointless assignment statement from that path.
This commit is contained in:
alc 2003-06-22 00:00:11 +00:00
parent 6e4d454560
commit 752ed0a2b9
1 changed files with 5 additions and 10 deletions
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15
sys/vm/vm_fault.c
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@ -707,23 +707,21 @@ RetryFault:;
* We don't chase down the shadow chain
*/
fs.object == fs.first_object->backing_object) {
vm_page_lock_queues();
/*
* get rid of the unnecessary page
*/
vm_page_lock_queues();
pmap_remove_all(fs.first_m);
vm_page_free(fs.first_m);
fs.first_m = NULL;
/*
* grab the page and put it into the
* process'es object. The page is
* automatically made dirty.
*/
vm_page_rename(fs.m, fs.first_object, fs.first_pindex);
fs.first_m = fs.m;
vm_page_busy(fs.first_m);
vm_page_busy(fs.m);
vm_page_unlock_queues();
fs.first_m = fs.m;
fs.m = NULL;
cnt.v_cow_optim++;
} else {
@ -740,7 +738,6 @@ RetryFault:;
*/
release_page(&fs);
}
/*
* fs.object != fs.first_object due to above
* conditional
@ -748,15 +745,13 @@ RetryFault:;
VM_OBJECT_LOCK(fs.object);
vm_object_pip_wakeup(fs.object);
VM_OBJECT_UNLOCK(fs.object);
/*
* Only use the new page below...
*/
cnt.v_cow_faults++;
fs.m = fs.first_m;
fs.object = fs.first_object;
fs.pindex = fs.first_pindex;
fs.m = fs.first_m;
cnt.v_cow_faults++;
} else {
prot &= ~VM_PROT_WRITE;
}