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- Synchronize access to the page's valid field in

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vnode_pager_generic_getpages() using the containing object's lock.
This commit is contained in:
Alan Cox 2003-10-18 21:30:29 +00:00
parent 7a93508274
commit 8b575f6c28
1 changed files with 2 additions and 1 deletions
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3
sys/vm/vnode_pager.c
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@ -694,8 +694,8 @@ vnode_pager_generic_getpages(vp, m, bytecount, reqpage)
* clean up and return. Otherwise we have to re-read the
* media.
*/
VM_OBJECT_LOCK(object);
if (m[reqpage]->valid == VM_PAGE_BITS_ALL) {
VM_OBJECT_LOCK(object);
vm_page_lock_queues();
for (i = 0; i < count; i++)
if (i != reqpage)
@ -705,6 +705,7 @@ vnode_pager_generic_getpages(vp, m, bytecount, reqpage)
return VM_PAGER_OK;
}
m[reqpage]->valid = 0;
VM_OBJECT_UNLOCK(object);
/*
* here on direct device I/O