Large splice reads call put_page() repeatedly. put_page() is
relatively expensive to call, so replace it with the new
svc_rqst_replace_page() helper to help amortize that cost.
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
Reviewed-by: NeilBrown <neilb@xxxxxxx>
---
fs/nfsd/vfs.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 46a6d9fce3d2..7732a384f949 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -849,15 +849,10 @@ nfsd_splice_actor(struct pipe_inode_info *pipe, struct pipe_buffer *buf,
struct page *page = buf->page;
if (rqstp->rq_res.page_len == 0) {
- get_page(page);
- put_page(*rqstp->rq_next_page);
- *(rqstp->rq_next_page++) = page;
+ svc_rqst_replace_page(rqstp, page);
rqstp->rq_res.page_base = buf->offset;
} else if (page != pp[-1]) {
- get_page(page);
- if (*rqstp->rq_next_page)
- put_page(*rqstp->rq_next_page);
- *(rqstp->rq_next_page++) = page;
+ svc_rqst_replace_page(rqstp, page);
}
rqstp->rq_res.page_len += sd->len;
