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J. Bruce Fields
3daa020f9b
This reverts commit 6f18dc8939.
Just as one example, it appears this code could do the wrong thing in
the case of a two-byte NFS READ that crosses a page boundary.
Chuck says: "In that case, nfsd would pass down an xdr_buf that has one
byte in a page, one byte in another page, and a two-byte XDR pad. The
logic introduced by this optimization would be fooled, and neither the
second byte nor the XDR pad would be written to the client."
Cc: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>