xfs: use ->t_dfops for rmap extent swap operations

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xfs_swap_extent_rmap() uses a local dfops instance with a
transaction from the caller. Since there is only one caller, pull
the dfops structure into the caller and attach it to the
transaction. This avoids the need to clear ->t_dfops to prevent
invalid stack memory access.

Signed-off-by: Brian Foster <bfoster@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>

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Brian Foster 2018-07-11 22:26:17 -07:00 • committed by Darrick J. Wong

parent ed7ef8e55c

commit 7a7943c7e0

1 changed files with 19 additions and 13 deletions

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32

fs/xfs/xfs_bmap_util.c

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