Hey Linus,
/* Summary */
This contains updates for pipes:
- Introduce struct file_operations pipeanon_fops.
- Don't update {a,c,m}time for anonymous pipes to avoid the performance costs
associated with it.
- Change pipe_write() to never add a zero-sized buffer.
- Limit the slots in pipe_resize_ring().
- Use pipe_buf() to retrieve the pipe buffer everywhere.
- Drop an always true check in anon_pipe_write().
- Aache 2 pages instead of 1.
- Avoid spurious calls to prepare_to_wait_event() in ___wait_event().
/* Testing */
gcc version 14.2.0 (Debian 14.2.0-6)
Debian clang version 16.0.6 (27+b1)
No build failures or warnings were observed.
/* Conflicts */
Merge conflicts with mainline
=============================
No known conflicts.
Merge conflicts with other trees
================================
No known conflicts.
The following changes since commit 00a7d39898c8010bfd5ff62af31ca5db34421b38:
fs/pipe: add simpler helpers for common cases (2025-03-06 18:25:35 -1000)
are available in the Git repository at:
git@xxxxxxxxxxxxxxxxxxx:pub/scm/linux/kernel/git/vfs/vfs tags/vfs-6.15-rc1.pipe
for you to fetch changes up to 3732d8f16531ddc591622bc64ce4d4c160c34bb4:
Merge patch series "pipe: Trivial cleanups" (2025-03-10 08:55:13 +0100)
Please consider pulling these changes from the signed vfs-6.15-rc1.pipe tag.
Thanks!
Christian
----------------------------------------------------------------
vfs-6.15-rc1.pipe
----------------------------------------------------------------
Christian Brauner (4):
Merge patch series "pipe: don't update {a,c,m}time for anonymous pipes"
Merge patch series "some pipe + wait stuff"
Merge mainline pipe changes
Merge patch series "pipe: Trivial cleanups"
K Prateek Nayak (4):
fs/pipe: Limit the slots in pipe_resize_ring()
kernel/watch_queue: Use pipe_buf() to retrieve the pipe buffer
fs/pipe: Use pipe_buf() helper to retrieve pipe buffer
fs/splice: Use pipe_buf() helper to retrieve pipe buffer
Mateusz Guzik (3):
pipe: drop an always true check in anon_pipe_write()
pipe: cache 2 pages instead of 1
wait: avoid spurious calls to prepare_to_wait_event() in ___wait_event()
Oleg Nesterov (3):
pipe: introduce struct file_operations pipeanon_fops
pipe: don't update {a,c,m}time for anonymous pipes
pipe: change pipe_write() to never add a zero-sized buffer
fs/pipe.c | 181 ++++++++++++++++++++++++++--------------------
fs/splice.c | 40 ++++------
include/linux/pipe_fs_i.h | 2 +-
include/linux/wait.h | 3 +
kernel/watch_queue.c | 7 +-
5 files changed, 124 insertions(+), 109 deletions(-)
