xfs: Add infrastructure needed for error propagation during buffer IO failure

xfs: Add infrastructure needed for error propagation during buffer IO  failure

[ Upstream commit 0b80ae6ed13169bd3a244e71169f2cc020b0c57a ]

With the current code, XFS never re-submit a failed buffer for IO,
because the failed item in the buffer is kept in the flush locked state
forever.

To be able to resubmit an log item for IO, we need a way to mark an item
as failed, if, for any reason the buffer which the item belonged to
failed during writeback.

Add a new log item callback to be used after an IO completion failure
and make the needed clean ups.

Orabug: 27609404
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: wen.gang.wang@oracle.com
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>