xprtrdma: Move creation of rl_rdmabuf to rpcrdma_create_req

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Refactor: Both rpcrdma_create_req call sites have to allocate the
buffer where the transport header is built, so just move that
allocation into rpcrdma_create_req.

This buffer is a fixed size. There's no needed information available
in call_allocate that is not also available when the transport is
created.

The original purpose for allocating these buffers on demand was to
reduce the possibility that an allocation failure during transport
creation will hork the mount operation during low memory scenarios.
Some relief for this rare possibility is coming up in the next few
patches.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

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This commit is contained in:

Chuck Lever 2018-02-28 15:31:05 -05:00 • committed by Anna Schumaker

parent f287762308

commit 2dd4a012d9

3 changed files with 12 additions and 34 deletions

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7

net/sunrpc/xprtrdma/backchannel.c

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25

net/sunrpc/xprtrdma/transport.c

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14

net/sunrpc/xprtrdma/verbs.c

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