Christoph Hellwig e666aa37f4 xfs: avoid COW fork extent lookups in writeback if the fork didn't change ...

Used the per-fork sequence counter to avoid lookups in the writeback code
unless the COW fork actually changed.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

2018-07-31 13:18:09 -07:00

1.1 KiB

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