Re: [PATCH 1/5] vfs: vfs-level fiemap interface

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On Thu, May 29, 2008 at 11:24:35AM +1000, Dave Chinner wrote:
> To fix this, FIECOUNT becomes much more complex however other
> existing interfaces will still expose conflicting information (e.g.
> XFS_IOC_FSGETXATTR). Hence I don't think extent merging is a
> good idea in general for this API. For specific implementations
> it could be considered (e.g. the block-based filesystem wrappers)
> but it should not forced on all implementations.

Yes.  Extent merging only really makes sense for block based
filesystems, and there should be an output flag telling the user that
this happened.

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