Messages in this thread | | | Date | Tue, 25 Feb 2014 23:52:45 +0200 | Subject | Re: [PATCH] mlx4: Use GFP_NOFS calls during the ipoib TX path when creating the QP | From | Or Gerlitz <> |
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On Fri, Feb 21, 2014 at 11:53 PM, Jiri Kosina <jkosina@suse.cz> wrote: >> >> This was originally a patch from Matthew Finlay <matt@mellanox.com> that >> addressed a problem whereby NFS writes would enter uninterruptible sleep >> forever. The issue happened when using NFS over IPoIB. This is not a >> recommended configuration as RDMA is preferred but it is still a valid >> configuration and is important to have in situations where the NFS server >> does not support RDMA. The problem encountered was described as follows: >> .
And what happens if you use IPoIB datagram mode, is/why the patch is needed there?
Also the patch uses a new QP creatiob flag IB_QP_CREATE_USE_GFP_NOFS but it doesn't touch include/rdma/ib_verbs.h nor I see this flag defined anywhere on the patch, does it compile? how?
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