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commit 11d49e9d089ccec81be87c2386dfdd010d7f7f6e upstream. we are advancing sg as we go, so the pages we need to drop in case of error are *before* the current sg. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>