With introduction of packetized pipes, splice wasn't updated to respect this
new behaviour.
In terms of splice it means, that it never set PIPE_BUF_FLAG_PACKET on
created pipe buffer regarless pipe operating mode, thus breaking the whole
logic.
To fix this, new SPLICE_F_PACKET flag was introduced. It's supposed to be used
only in kernel and set, when write pipe is in packetized mode. In
splice_to_pipe() it's converted into created pipe buffer PIPE_BUF_FLAG_PACKET
flag.
The following series implements...
---
Stanislav Kinsburskiy (3):
pipe: make is_packetized() non-static and declare in pipe_fs_i.h
splice: new SPLICE_F_PACKET flag introduced
splice: add support of splicing to packetized pipe
fs/pipe.c | 2 +-
fs/splice.c | 8 ++++++++
include/linux/pipe_fs_i.h | 2 ++
include/linux/splice.h | 5 +++++
4 files changed, 16 insertions(+), 1 deletion(-)
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