xfs: maintain a sequence count for inode fork manipulations

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Add a simple 32-bit unsigned integer as the sequence count for
modifications to the extent list in the inode fork.  This will be
used to optimize away extent list lookups in the writeback code.

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>

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Christoph Hellwig 2018-07-17 16:51:51 -07:00 • committed by Darrick J. Wong

parent 9e037cb797

commit 745b3f76d1

2 changed files with 7 additions and 0 deletions

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6

fs/xfs/libxfs/xfs_iext_tree.c

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1

fs/xfs/libxfs/xfs_inode_fork.h

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