xfs: use a union for i_cowextsize and i_flushiter

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The i_cowextsize field is only used for v3 inodes, and the i_flushiter
field is only used for v1/v2 inodes.  Use a union to pack the inode a
littler better after adding a few missing guards around their usage.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>

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Christoph Hellwig 2021-03-29 11:11:43 -07:00 • committed by Darrick J. Wong

parent b231b1221b

commit ee7b83fd36

4 changed files with 20 additions and 11 deletions

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3

fs/xfs/libxfs/xfs_inode_buf.c

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6

fs/xfs/xfs_inode.c

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7

fs/xfs/xfs_inode.h

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15

fs/xfs/xfs_ioctl.c

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