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[XFS] optimize xfs_ichgtime
authorChristoph Hellwig <hch@infradead.org>
Wed, 13 Aug 2008 06:45:13 +0000 (16:45 +1000)
committerLachlan McIlroy <lachlan@redback.melbourne.sgi.com>
Wed, 13 Aug 2008 06:45:13 +0000 (16:45 +1000)
Port a little optmization from file_update_time to xfs_ichgtime, and only
update the timestamp and mark the inode dirty if the timestamp actually
changes in the timer tick resultion supported by the running kernel.

SGI-PV: 981498

SGI-Modid: xfs-linux-melb:xfs-kern:31827a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

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