[PATCH 46/56] kernel/relay: support compiling out splice

[Pieter Smith]

Compile out splice support from relay when the splice-family of syscalls is not
supported by the system (i.e. CONFIG_SYSCALL_SPLICE is undefined).

Signed-off-by: Pieter Smith <pieter@xxxxxxxxxx>
---
 kernel/relay.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/relay.c b/kernel/relay.c
index 5a56d3c..fed90ca 100644
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -1201,6 +1201,7 @@ static const struct pipe_buf_operations relay_pipe_buf_ops = {
 	.get = generic_pipe_buf_get,
 };
 
+#ifdef CONFIG_SYSCALL_SPLICE
 static void relay_page_release(struct splice_pipe_desc *spd, unsigned int i)
 {
 }
@@ -1338,6 +1339,7 @@ static ssize_t relay_file_splice_read(struct file *in,
 
 	return ret;
 }
+#endif /* #ifdef CONFIG_SYSCALL_SPLICE */
 
 const struct file_operations relay_file_operations = {
 	.open		= relay_file_open,
@@ -1346,7 +1348,7 @@ const struct file_operations relay_file_operations = {
 	.read		= relay_file_read,
 	.llseek		= no_llseek,
 	.release	= relay_file_release,
-	.splice_read	= relay_file_splice_read,
+	SPLICE_READ_INIT(relay_file_splice_read)
 };
 EXPORT_SYMBOL_GPL(relay_file_operations);
 
-- 
1.9.1

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