xfs: only reclaim unwritten COW extents periodically

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commit 3802a34532 upstream.

We only want to reclaim preallocations from our periodic work item.
Currently this is archived by looking for a dirty inode, but that check
is rather fragile.  Instead add a flag to xfs_reflink_cancel_cow_* so
that the caller can ask for just cancelling unwritten extents in the COW
fork.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
[darrick: fix typos in commit message]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Christoph Hellwig 2017-03-07 16:45:58 -08:00 • committed by Greg Kroah-Hartman

parent a240293694

commit 3b83a02af2

6 changed files with 22 additions and 13 deletions

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2

fs/xfs/xfs_aops.c

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2

fs/xfs/xfs_icache.c

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2

fs/xfs/xfs_inode.c

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23

fs/xfs/xfs_reflink.c

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fs/xfs/xfs_reflink.h

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fs/xfs/xfs_super.c

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