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59cf734654
As a step towards making NFSD's maximum rsize and wsize variable at run-time, replace the fixed-size rq_bvec[] array in struct svc_rqst with a chunk of dynamically-allocated memory. The rq_bvec[] array contains enough bio_vecs to handle each page in a maximum size RPC message. On a system with 8-byte pointers and 4KB pages, pahole reports that the rq_bvec[] array is 4144 bytes. This patch replaces that array with a single 8-byte pointer field. Reviewed-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: NeilBrown <neil@brown.name> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>