Messages in this thread | | | Date | Tue, 20 Jun 2017 09:42:55 -0600 | From | Ross Zwisler <> | Subject | Re: [RFC PATCH 2/2] mm, fs: daxfile, an interface for byte-addressable updates to pmem |
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On Mon, Jun 19, 2017 at 10:22:14PM -0700, Darrick J. Wong wrote: <> > Fourth, the VFS entry points for things like read, write, truncate, > utimes, fallocate, etc. all just bail out if S_IOMAP_FROZEN is set on a > file, so that the block map cannot be modified. mmap is still allowed, > as we've discussed. /Maybe/ we can allow fallocate to extend a file > with zeroed extents (it will be slow) as I've heard murmurs about > wanting to be able to extend a file, maybe not.
Read and write should still be allowed, right?
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