diff options
| author | Chuck Lever <chuck.lever@oracle.com> | 2025-04-28 15:36:54 -0400 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2025-05-15 16:16:23 -0400 |
| commit | 59cf7346542babdaae99e72365174eab4fa276ac (patch) | |
| tree | e3ed4f9849f558a9f51788226665894a5575aa0c /include/linux | |
| parent | ed603bcf4feac05df937bf78bc7feb75f988a971 (diff) | |
sunrpc: Replace the rq_bvec array with dynamically-allocated memory
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>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sunrpc/svc.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 57be69539888..538bea716c6b 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -213,7 +213,7 @@ struct svc_rqst { struct folio_batch rq_fbatch; struct kvec rq_vec[RPCSVC_MAXPAGES]; /* generally useful.. */ - struct bio_vec rq_bvec[RPCSVC_MAXPAGES]; + struct bio_vec *rq_bvec; __be32 rq_xid; /* transmission id */ u32 rq_prog; /* program number */ |