D22973.id66705.diff
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	Index: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h
	===================================================================
	--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h
	+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h
	@@ -233,12 +233,11 @@
	};

	/*
	- * We'll take the number 122 and 123 to indicate checksum errors and
	- * fragmentation. Those doesn't collide with any errno values as they
	- * are greater than ELAST.
	+ * These are bespoke errnos used in ZFS. We map them to their closest FreeBSD
	+ * equivalents. This gives us more useful error messages from strerror(3).
	*/
	-#define ECKSUM 122
	-#define EFRAGS 123
	+#define ECKSUM EINTEGRITY
	+#define EFRAGS ENOSPC

	typedef void zio_done_func_t(zio_t *zio);