ceph: use default file splice read callback

Splice read/write implementation changed recently. When using
generic_file_splice_read(), iov_iter with type == ITER_PIPE is
passed to filesystem's read_iter callback. But ceph_sync_read()
can't serve ITER_PIPE iov_iter correctly (ITER_PIPE iov_iter
expects pages from page cache).

Fixing ceph_sync_read() requires a big patch. So use default
splice read callback for now.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 18630e800208..f995e3528a33 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1770,7 +1770,6 @@ const struct file_operations ceph_file_fops = {
         .fsync = ceph_fsync,
         .lock = ceph_lock,
         .flock = ceph_flock,
-        .splice_read = generic_file_splice_read,
         .splice_write = iter_file_splice_write,
         .unlocked_ioctl = ceph_ioctl,
         .compat_ioctl   = ceph_ioctl,