2011-12-30 00:04:11 +00:00
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$FreeBSD$
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1997-05-18 10:03:48 +00:00
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These tests are intended to make sure that NFS's use of the
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b_{valid,dirty}{off,end} fields of struct buf is consistent with the
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VM system's use of the underlying VM pages.
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Test1:
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Open the file and write into the file, creating a buf
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with a valid range and a dirty range
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Fsync, flushing the dirty range
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Mmap and read the whole page. Since only part of the page is
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valid, the VM system must re-read the invalid parts of the
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page.
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Test2:
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This is the same as test1 without the fsync. The VM system
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should first write out the dirty range and then read the rest
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of the page. This is currently broken since the vnode_pager
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doesn't use the original buf for its i/o and therefore the
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2011-12-30 00:04:11 +00:00
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information in b_dirtyoff, b_dirtyend is not available.
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