5.15-stable review patch. If anyone has any objections, please let me know.
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From: Chuck Lever chuck.lever@oracle.com
[ Upstream commit 98124f5bd6c76699d514fbe491dd95265369cc99 ]
The dust has settled a bit and it's become obvious what code is totally common between nfsd_init_dirlist_pages() and nfsd3_init_dirlist_pages(). Move that common code to SUNRPC.
The new helper brackets the existing xdr_init_decode_pages() API.
Signed-off-by: Chuck Lever chuck.lever@oracle.com --- fs/nfsd/nfs3proc.c | 10 +--------- fs/nfsd/nfsproc.c | 10 +--------- include/linux/sunrpc/xdr.h | 2 ++ net/sunrpc/xdr.c | 22 ++++++++++++++++++++++ 4 files changed, 26 insertions(+), 18 deletions(-)
diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c index 58695e4e18b46..923d9a80df92c 100644 --- a/fs/nfsd/nfs3proc.c +++ b/fs/nfsd/nfs3proc.c @@ -574,15 +574,7 @@ static void nfsd3_init_dirlist_pages(struct svc_rqst *rqstp, buf->pages = rqstp->rq_next_page; rqstp->rq_next_page += (buf->buflen + PAGE_SIZE - 1) >> PAGE_SHIFT;
- /* This is xdr_init_encode(), but it assumes that - * the head kvec has already been consumed. */ - xdr_set_scratch_buffer(xdr, NULL, 0); - xdr->buf = buf; - xdr->page_ptr = buf->pages; - xdr->iov = NULL; - xdr->p = page_address(*buf->pages); - xdr->end = (void *)xdr->p + min_t(u32, buf->buflen, PAGE_SIZE); - xdr->rqst = NULL; + xdr_init_encode_pages(xdr, buf, buf->pages, NULL); }
/* diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c index 49778ff410e32..82b3ddeacc338 100644 --- a/fs/nfsd/nfsproc.c +++ b/fs/nfsd/nfsproc.c @@ -575,15 +575,7 @@ static void nfsd_init_dirlist_pages(struct svc_rqst *rqstp, buf->pages = rqstp->rq_next_page; rqstp->rq_next_page++;
- /* This is xdr_init_encode(), but it assumes that - * the head kvec has already been consumed. */ - xdr_set_scratch_buffer(xdr, NULL, 0); - xdr->buf = buf; - xdr->page_ptr = buf->pages; - xdr->iov = NULL; - xdr->p = page_address(*buf->pages); - xdr->end = (void *)xdr->p + min_t(u32, buf->buflen, PAGE_SIZE); - xdr->rqst = NULL; + xdr_init_encode_pages(xdr, buf, buf->pages, NULL); }
/* diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h index 3a2c714d6b629..98e197376a0d9 100644 --- a/include/linux/sunrpc/xdr.h +++ b/include/linux/sunrpc/xdr.h @@ -240,6 +240,8 @@ typedef int (*kxdrdproc_t)(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p, struct rpc_rqst *rqst); +extern void xdr_init_encode_pages(struct xdr_stream *xdr, struct xdr_buf *buf, + struct page **pages, struct rpc_rqst *rqst); extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes); extern int xdr_reserve_space_vec(struct xdr_stream *xdr, struct kvec *vec, size_t nbytes); diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c index f0a0a4ad6d525..b227d0c8471ff 100644 --- a/net/sunrpc/xdr.c +++ b/net/sunrpc/xdr.c @@ -918,6 +918,28 @@ void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p, } EXPORT_SYMBOL_GPL(xdr_init_encode);
+/** + * xdr_init_encode_pages - Initialize an xdr_stream for encoding into pages + * @xdr: pointer to xdr_stream struct + * @buf: pointer to XDR buffer into which to encode data + * @pages: list of pages to decode into + * @rqst: pointer to controlling rpc_rqst, for debugging + * + */ +void xdr_init_encode_pages(struct xdr_stream *xdr, struct xdr_buf *buf, + struct page **pages, struct rpc_rqst *rqst) +{ + xdr_reset_scratch_buffer(xdr); + + xdr->buf = buf; + xdr->page_ptr = pages; + xdr->iov = NULL; + xdr->p = page_address(*pages); + xdr->end = (void *)xdr->p + min_t(u32, buf->buflen, PAGE_SIZE); + xdr->rqst = rqst; +} +EXPORT_SYMBOL_GPL(xdr_init_encode_pages); + /** * xdr_commit_encode - Ensure all data is written to buffer * @xdr: pointer to xdr_stream