On Thu, Oct 26, 2017 at 05:48:04PM +0200, Jan Kara wrote:

But now that I look at XFS implementation again, it misses handling
of VM_FAULT_NEEDSYNC in xfs_filemap_pfn_mkwrite() (ext4 gets this right).
I'll fix this by using __xfs_filemap_fault() for xfs_filemap_pfn_mkwrite()
as well since it mostly duplicates it anyway... Thanks for inquiring!

My first patches move xfs_filemap_pfn_mkwrite to use __xfs_filemap_fault,
but that didn't work.  Wish I'd remember why, though.

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