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| author |   Christoph Hellwig <hch@lst.de> | 2015-02-16 11:49:23 +1100 |
|---|---|---|
| committer |   Dave Chinner <david@fromorbit.com> | 2015-02-16 11:49:23 +1100 |
| commit | 527851124d10f9c50b1c578e0a56fcd49922422d (patch) | |
| tree | f16dd8e452ae24ce6802cfb8c6baa53588de91ab /fs/xfs/xfs_mount.h | |
| parent | Merge branch 'xfs-misc-fixes-for-3.20-4' into for-next (diff) | |
| download | linux-dev-527851124d10f9c50b1c578e0a56fcd49922422d.tar.xz linux-dev-527851124d10f9c50b1c578e0a56fcd49922422d.zip | |
xfs: implement pNFS export operations
Add operations to export pNFS block layouts from an XFS filesystem. See
the previous commit adding the operations for an explanation of them.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_mount.h')
| -rw-r--r-- | fs/xfs/xfs_mount.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index a5b2ff822653..0d8abd6364d9 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -174,6 +174,17 @@ typedef struct xfs_mount { struct workqueue_struct *m_reclaim_workqueue; struct workqueue_struct *m_log_workqueue; struct workqueue_struct *m_eofblocks_workqueue; + + /* + * Generation of the filesysyem layout. This is incremented by each + * growfs, and used by the pNFS server to ensure the client updates + * its view of the block device once it gets a layout that might + * reference the newly added blocks. Does not need to be persistent + * as long as we only allow file system size increments, but if we + * ever support shrinks it would have to be persisted in addition + * to various other kinds of pain inflicted on the pNFS server. + */ + __uint32_t m_generation; } xfs_mount_t; /* |