[XFS] make inode reclaim wait for log I/O to complete
During a forced shutdown a xfs inode can be destroyed before log I/O involving that inode is complete. We need to wait for the inode to be unpinned before tearing it down. Version 2 cleans up the code a bit by relying on xfs_iflush() to do the unpinning and forced shutdown check. SGI-PV: 981240 SGI-Modid: xfs-linux-melb:xfs-kern:31326a Signed-off-by: NLachlan McIlroy <lachlan@sgi.com> Signed-off-by: NDavid Chinner <dgc@sgi.com>
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