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xfs: track cowblocks separately in i_flags

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The EOFBLOCKS/COWBLOCKS tags are totally separate things, so track them
with separate i_flags.  Right now we're abusing IEOFBLOCKS for both,
which is totally bogus because we won't tag the inode with COWBLOCKS if
IEOFBLOCKS was set by a previous tagging of the inode with EOFBLOCKS.
Found by wiring up clonerange to fsstress in xfs/017.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Darrick J. Wong
2017-12-14 15:42:22 -08:00
parent a192de265b
commit 91aae6be41
2 changed files with 25 additions and 9 deletions
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fs/xfs/xfs_inode.h
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@@ -232,6 +232,7 @@ static inline bool xfs_is_reflink_inode(struct xfs_inode *ip)
* log recovery to replay a bmap operation on the inode.
*/
#define XFS_IRECOVERY (1 << 11)
#define XFS_ICOWBLOCKS (1 << 12)/* has the cowblocks tag set */
/*
* Per-lifetime flags need to be reset when re-using a reclaimable inode during