diff options
| author | Chuck Lever <chuck.lever@oracle.com> | 2025-04-28 15:36:52 -0400 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2025-05-15 16:16:22 -0400 |
| commit | ed603bcf4feac05df937bf78bc7feb75f988a971 (patch) | |
| tree | 4231e67cf297057ea681891f0f9bf9b7804cc635 /include/linux | |
| parent | 1a58791292ebb58cde3c0c708e41bb063b9dec6f (diff) | |
sunrpc: Replace the rq_pages 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_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>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sunrpc/svc.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 749f8e53e8a6..57be69539888 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -205,7 +205,8 @@ struct svc_rqst { struct xdr_stream rq_res_stream; struct page *rq_scratch_page; struct xdr_buf rq_res; - struct page *rq_pages[RPCSVC_MAXPAGES + 1]; + unsigned long rq_maxpages; /* num of entries in rq_pages */ + struct page * *rq_pages; struct page * *rq_respages; /* points into rq_pages */ struct page * *rq_next_page; /* next reply page to use */ struct page * *rq_page_end; /* one past the last page */ |