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Convert nfs41-server.txt to ReST. ASCII tables were converted to ReST grid
table format.
Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com>
Link: https://lore.kernel.org/r/20200129044917.566906-5-dwlsalmeida@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Signed-off-by: Christoph Hellwig <hch@lst.de>
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I'm not sure why a client would want to stuff multiple reads in a
single compound rpc, but it's legal for them to do it, and we should
really support it.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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This has gone a little stale.
Reported-by: Christoph Hellwig <hch@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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Our server rejects compounds containing more than one write operation.
It's unclear whether this is really permitted by the spec; with 4.0,
it's possibly OK, with 4.1 (which has clearer limits on compound
parameters), it's probably not OK. No client that we're aware of has
ever done this, but in theory it could be useful.
The source of the limitation: we need an array of iovecs to pass to the
write operation. In the worst case that array of iovecs could have
hundreds of elements (the maximum rwsize divided by the page size), so
it's too big to put on the stack, or in each compound op. So we instead
keep a single such array in the compound argument.
We fill in that array at the time we decode the xdr operation.
But we decode every op in the compound before executing any of them. So
once we've used that array we can't decode another write.
If we instead delay filling in that array till the time we actually
perform the write, we can reuse it.
Another option might be to switch to decoding compound ops one at a
time. I considered doing that, but it has a number of other side
effects, and I'd rather fix just this one problem for now.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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This operation is mandatory for servers to implement.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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Update documentation to reflect recent progress.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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This is a mandatory operation. Also, here (not in open) is where we
should be committing the reboot recovery information.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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No need to refer to an internet draft; there's an RFC now.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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We're adding enough nfs documentation that it may as well have its own
subdirectory.
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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