xfs: move mappings from cow fork to data fork after copy-write

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After the write component of a copy-write operation finishes, clean up
the bookkeeping left behind.  On error, we simply free the new blocks
and pass the error up.  If we succeed, however, then we must remove
the old data fork mapping and move the cow fork mapping to the data
fork.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
[hch: Call the CoW failure function during xfs_cancel_ioend]
Signed-off-by: Christoph Hellwig <hch@lst.de>

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This commit is contained in:

Darrick J. Wong 2016-10-03 09:11:35 -07:00

parent 4862cfe825

commit 43caeb187d

3 changed files with 272 additions and 2 deletions

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24

fs/xfs/xfs_aops.c

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242

fs/xfs/xfs_reflink.c

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8

fs/xfs/xfs_reflink.h

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