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| author | Chuck Lever <chuck.lever@oracle.com> | 2016-06-29 13:54:16 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2016-07-11 15:50:43 -0400 |
| commit | 9d6b0409788287b64d8401ffba2ce11a5a86a879 (patch) | |
| tree | f89383b033863f6d3ea6b2666a8eb9c50c3927ec /net/sunrpc/xprtrdma/xprt_rdma.h | |
| parent | 2ffc871a574daa760ef4f7750e0a36187a45754a (diff) | |
| download | linux-9d6b0409788287b64d8401ffba2ce11a5a86a879.tar.bz2 | |
xprtrdma: Place registered MWs on a per-req list
Instead of placing registered MWs sparsely into the rl_segments
array, place these MWs on a per-req list.
ro_unmap_{sync,safe} can then simply pull those MWs off the list
instead of walking through the array.
This change significantly reduces the size of struct rpcrdma_req
by removing nsegs and rl_mw from every array element.
As an additional clean-up, chunk co-ordinates are returned in the
"*mw" output argument so they are no longer needed in every
array element.
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>
Diffstat (limited to 'net/sunrpc/xprtrdma/xprt_rdma.h')
| -rw-r--r-- | net/sunrpc/xprtrdma/xprt_rdma.h | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h index 649d01dda327..f5d05110de9f 100644 --- a/net/sunrpc/xprtrdma/xprt_rdma.h +++ b/net/sunrpc/xprtrdma/xprt_rdma.h @@ -245,6 +245,9 @@ struct rpcrdma_mw { struct rpcrdma_frmr frmr; }; struct rpcrdma_xprt *mw_xprt; + u32 mw_handle; + u32 mw_length; + u64 mw_offset; struct list_head mw_all; }; @@ -272,11 +275,7 @@ struct rpcrdma_mw { */ struct rpcrdma_mr_seg { /* chunk descriptors */ - struct rpcrdma_mw *rl_mw; /* registered MR */ - u64 mr_base; /* registration result */ - u32 mr_rkey; /* registration result */ u32 mr_len; /* length of chunk or segment */ - int mr_nsegs; /* number of segments in chunk or 0 */ struct page *mr_page; /* owning page, if any */ char *mr_offset; /* kva if no page, else offset */ }; @@ -294,6 +293,7 @@ struct rpcrdma_req { struct ib_sge rl_send_iov[RPCRDMA_MAX_IOVS]; struct rpcrdma_regbuf *rl_rdmabuf; struct rpcrdma_regbuf *rl_sendbuf; + struct list_head rl_registered; /* registered segments */ struct rpcrdma_mr_seg rl_segments[RPCRDMA_MAX_SEGS]; struct rpcrdma_mr_seg *rl_nextseg; @@ -397,7 +397,8 @@ struct rpcrdma_stats { struct rpcrdma_xprt; struct rpcrdma_memreg_ops { int (*ro_map)(struct rpcrdma_xprt *, - struct rpcrdma_mr_seg *, int, bool); + struct rpcrdma_mr_seg *, int, bool, + struct rpcrdma_mw **); void (*ro_unmap_sync)(struct rpcrdma_xprt *, struct rpcrdma_req *); void (*ro_unmap_safe)(struct rpcrdma_xprt *, |