Hi Linus,
Mostly just a set of fixes in here, or little changes that didn't get
included in the initial pull request. This pull request contains:
- Move the SQPOLL napi polling outside the submission lock (Olivier)
- Rename of the "copy buffers" API that got added in the 6.12 merge
window. There's really no copying going on, it's just referencing the
buffers. After a bit of consideration, decided that it was better to
simply rename this to avoid potential confusion (me)
- Shrink struct io_mapped_ubuf from 48 to 32 bytes, by changing it to
start + len tracking rather than having start / end in there, and by
removing the caching of folio_mask when we can just calculate it from
folio_shift when we need it (me)
- Fixes for the SQPOLL affinity checking (me, Felix)
- Fix for how cqring waiting checks for the presence of task_work. Just
check it directly rather than check for a specific notification
mechanism (me)
- Tweak to how request linking is represented in tracing (me)
- Fix a syzbot report that deliberately sets up a huge list of overflow
entries, and then hits rcu stalls when flushing this list. Just check
for the need to preempt, and drop/reacquire locks in the loop. There's
no state maintained over the loop itself, and each entry is yanked from
head-of-list (me)
Please pull!
The following changes since commit 7cc2a6eadcd7a5aa36ac63e6659f5c6138c7f4d2:
io_uring: add IORING_REGISTER_COPY_BUFFERS method (2024-09-12 10:14:15 -0600)
are available in the Git repository at:
git://git.kernel.dk/linux.git tags/for-6.12/io_uring-20240922
for you to fetch changes up to eac2ca2d682f94f46b1973bdf5e77d85d77b8e53:
io_uring: check if we need to reschedule during overflow flush (2024-09-20 02:51:20 -0600)
----------------------------------------------------------------
for-6.12/io_uring-20240922
----------------------------------------------------------------
Dan Carpenter (1):
io_uring: clean up a type in io_uring_register_get_file()
Felix Moessbauer (1):
io_uring/sqpoll: do not put cpumask on stack
Jens Axboe (7):
io_uring: rename "copy buffers" to "clone buffers"
io_uring/rsrc: get rid of io_mapped_ubuf->folio_mask
io_uring/rsrc: change ubuf->ubuf_end to length tracking
io_uring/sqpoll: retain test for whether the CPU is valid
io_uring: check for presence of task_work rather than TIF_NOTIFY_SIGNAL
io_uring: improve request linking trace
io_uring: check if we need to reschedule during overflow flush
Olivier Langlois (1):
io_uring/sqpoll: do the napi busy poll outside the submission block
include/uapi/linux/io_uring.h | 6 +++---
io_uring/fdinfo.c | 3 +--
io_uring/io_uring.c | 21 ++++++++++++++++++---
io_uring/register.c | 6 +++---
io_uring/register.h | 2 +-
io_uring/rsrc.c | 23 ++++++++++-------------
io_uring/rsrc.h | 7 +++----
io_uring/sqpoll.c | 22 ++++++++++++++++------
8 files changed, 55 insertions(+), 35 deletions(-)
--
Jens Axboe
