xprtrdma: Remove MEMWINDOWS registration modes

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The MEMWINDOWS and MEMWINDOWS_ASYNC memory registration modes were
intended as stop-gap modes before the introduction of FRMR. They
are now considered obsolete.

MEMWINDOWS_ASYNC is also considered unsafe because it can leave
client memory registered and exposed for an indeterminant time after
each I/O.

At this point, the MEMWINDOWS modes add needless complexity, so
remove them.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

...

This commit is contained in:

Chuck Lever 2014-05-28 10:32:34 -04:00 • committed by Anna Schumaker

parent 03ff8821eb

commit b45ccfd25d

4 changed files with 7 additions and 203 deletions

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34

net/sunrpc/xprtrdma/rpc_rdma.c

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9

net/sunrpc/xprtrdma/transport.c

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165

net/sunrpc/xprtrdma/verbs.c

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2

net/sunrpc/xprtrdma/xprt_rdma.h

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