Re: [PATCH v1 4/4] svcrdma: use bvec-based RDMA read/write API

[Leon Romanovsky <leon@kernel.org>]

On Wed, Jan 14, 2026 at 09:39:48AM -0500, Chuck Lever wrote:
> From: Chuck Lever <chuck.lever@oracle.com>
> 
> Convert svcrdma to the bvec-based RDMA API introduced earlier in
> this series.
> 
> The bvec-based RDMA API eliminates the intermediate scatterlist
> conversion step, allowing direct DMA mapping from bio_vec arrays.
> This simplifies the svc_rdma_rw_ctxt structure by removing the
> inline scatterlist and chained SG table management.
> 
> The structure size reduction is significant: the previous inline
> scatterlist array of RPCSVC_MAXPAGES entries (4KB or more) is
> replaced with a pointer to a dynamically allocated bvec array,
> bringing the fixed structure size down to approximately 100 bytes.
> 
> The bvec API handles all device types internally, including iWARP
> devices which require memory registration. No explicit fallback
> path is needed.
> 
> Signed-off-by: cel@kernel.org

Something went wrong here.

Thanks

> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
> ---
>  net/sunrpc/xprtrdma/svc_rdma_rw.c | 115 ++++++++++++++----------------
>  1 file changed, 55 insertions(+), 60 deletions(-)