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From:   Dave Wysochanski <dwysocha@redhat.com>
To:     Trond Myklebust <trond.myklebust@hammerspace.com>,
        Anna Schumaker <anna.schumaker@netapp.com>
Cc:     linux-nfs@vger.kernel.org
Subject: [PATCH 3/4] NFS: Allow internal use of read structs and functions
Date:   Mon, 28 Jun 2021 13:39:02 -0400
Message-Id: <1624901943-20027-4-git-send-email-dwysocha@redhat.com>
In-Reply-To: <1624901943-20027-1-git-send-email-dwysocha@redhat.com>
References: <1624901943-20027-1-git-send-email-dwysocha@redhat.com>
Precedence: bulk

The conversion of the NFS read paths to the new fscache API
will require use of a few read structs and functions,
so move these declarations as required.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
---
 fs/nfs/internal.h |  7 +++++++
 fs/nfs/read.c     | 13 ++++---------
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index a36af04188c2..f9f6c6a6370f 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -463,9 +463,16 @@ extern char *nfs_path(char **p, struct dentry *dentry,
 
 struct nfs_pgio_completion_ops;
 /* read.c */
+extern const struct nfs_pgio_completion_ops nfs_async_read_completion_ops;
 extern void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio,
 			struct inode *inode, bool force_mds,
 			const struct nfs_pgio_completion_ops *compl_ops);
+struct nfs_readdesc {
+	struct nfs_pageio_descriptor pgio;
+	struct nfs_open_context *ctx;
+};
+extern int readpage_async_filler(void *data, struct page *page);
+extern int nfs_pageio_complete_read(struct nfs_pageio_descriptor *pgio);
 extern void nfs_read_prepare(struct rpc_task *task, void *calldata);
 extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio);
 
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index b0680351df23..a0b4ce6893a8 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -30,7 +30,7 @@
 
 #define NFSDBG_FACILITY		NFSDBG_PAGECACHE
 
-static const struct nfs_pgio_completion_ops nfs_async_read_completion_ops;
+const struct nfs_pgio_completion_ops nfs_async_read_completion_ops;
 static const struct nfs_rw_ops nfs_rw_read_ops;
 
 static struct kmem_cache *nfs_rdata_cachep;
@@ -74,7 +74,7 @@ void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio,
 }
 EXPORT_SYMBOL_GPL(nfs_pageio_init_read);
 
-static int nfs_pageio_complete_read(struct nfs_pageio_descriptor *pgio)
+int nfs_pageio_complete_read(struct nfs_pageio_descriptor *pgio)
 {
 	struct nfs_pgio_mirror *pgm;
 	unsigned long npages;
@@ -133,11 +133,6 @@ static void nfs_readpage_release(struct nfs_page *req, int error)
 	nfs_release_request(req);
 }
 
-struct nfs_readdesc {
-	struct nfs_pageio_descriptor pgio;
-	struct nfs_open_context *ctx;
-};
-
 static void nfs_page_group_set_uptodate(struct nfs_page *req)
 {
 	if (nfs_page_group_sync_on_bit(req, PG_UPTODATE))
@@ -216,7 +211,7 @@ static void nfs_initiate_read(struct nfs_pgio_header *hdr,
 	}
 }
 
-static const struct nfs_pgio_completion_ops nfs_async_read_completion_ops = {
+const struct nfs_pgio_completion_ops nfs_async_read_completion_ops = {
 	.error_cleanup = nfs_async_read_error,
 	.completion = nfs_read_completion,
 };
@@ -291,7 +286,7 @@ static void nfs_readpage_result(struct rpc_task *task,
 		nfs_readpage_retry(task, hdr);
 }
 
-static int
+int
 readpage_async_filler(void *data, struct page *page)
 {
 	struct nfs_readdesc *desc = data;
-- 
1.8.3.1