[RESEND] ecryptfs: make splice write available again

[Yangtao Li]

Since 5.10, splice() or sendfile() return EINVAL.  This was
caused by commit 36e2c7421f02 ("fs: don't allow splice read/write
without explicit ops").

This patch initializes the splice_write field in file_operations, like
most file systems do, to restore the functionality.

Signed-off-by: Yangtao Li <frank.li@xxxxxxxx>
---
 fs/ecryptfs/file.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index 268b74499c28..2c9c2af74785 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -415,4 +415,5 @@ const struct file_operations ecryptfs_main_fops = {
 	.fsync = ecryptfs_fsync,
 	.fasync = ecryptfs_fasync,
 	.splice_read = generic_file_splice_read,
+	.splice_write = iter_file_splice_write,
 };
-- 
2.35.1