sunrpc: Replace the rq_pages array with dynamically-allocated memory

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As a step towards making NFSD's maximum rsize and wsize variable at
run-time, replace the fixed-size rq_vec[] array in struct svc_rqst
with a chunk of dynamically-allocated memory.

On a system with 8-byte pointers and 4KB pages, pahole reports that
the rq_pages[] array is 2080 bytes. This patch replaces that 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>

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This commit is contained in:

Chuck Lever 2025-04-28 15:36:52 -04:00

parent 1a58791292

commit ed603bcf4f

4 changed files with 21 additions and 25 deletions

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3

include/linux/sunrpc/svc.h

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31

net/sunrpc/svc.c

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10

net/sunrpc/svc_xprt.c

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2

net/sunrpc/xprtrdma/svc_rdma_rw.c

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