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OpenCloudOS-Kernel/io_uring
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Jens Axboe 9e1152a6c2 io_uring/kbuf: recycle freed mapped buffer ring entries 
commit b10b73c102a2eab91e1cd62a03d6446f1dfecc64 upstream.

Right now we stash any potentially mmap'ed provided ring buffer range
for freeing at release time, regardless of when they get unregistered.
Since we're keeping track of these ranges anyway, keep track of their
registration state as well, and use that to recycle ranges when
appropriate rather than always allocate new ones.

The lookup is a basic scan of entries, checking for the best matching
free entry.

Fixes: c392cbecd8ec ("io_uring/kbuf: defer release of mapped buffer rings")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2023-12-08 08:52:21 +01:00
..
Makefile
…
advise.c io_uring: always go async for unsupported fadvise flags 2023-01-29 15:18:26 -07:00
advise.h
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alloc_cache.h io_uring/rsrc: consolidate node caching 2023-04-12 12:09:41 -06:00
cancel.c io_uring/cancel: wire up IORING_ASYNC_CANCEL_OP for sync cancel 2023-07-17 10:05:48 -06:00
cancel.h io_uring/cancel: support opcode based lookup and cancelation 2023-07-17 10:05:48 -06:00
epoll.c io_uring: undeprecate epoll_ctl support 2023-05-26 20:22:41 -06:00
epoll.h
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fdinfo.c io_uring/fdinfo: remove need for sqpoll lock for thread/pid retrieval 2023-11-28 17:19:52 +00:00
fdinfo.h
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filetable.c io_uring: add helpers to decode the fixed file file_ptr 2023-06-20 09:36:22 -06:00
filetable.h io_uring: add helpers to decode the fixed file file_ptr 2023-06-20 09:36:22 -06:00
fs.c io_uring/fs: consider link->flags when getting path for LINKAT 2023-12-03 07:33:07 +01:00
fs.h
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io-wq.c io-wq: fully initialize wqe before calling cpuhp_state_add_instance_nocalls() 2023-10-05 14:11:18 -06:00
io-wq.h io_uring: break out of iowq iopoll on teardown 2023-09-07 09:02:27 -06:00
io_uring.c io_uring/kbuf: defer release of mapped buffer rings 2023-12-08 08:52:20 +01:00
io_uring.h io_uring: enable io_mem_alloc/free to be used in other parts 2023-12-08 08:52:20 +01:00
kbuf.c io_uring/kbuf: recycle freed mapped buffer ring entries 2023-12-08 08:52:21 +01:00
kbuf.h io_uring/kbuf: defer release of mapped buffer rings 2023-12-08 08:52:20 +01:00
msg_ring.c io_uring: use io_file_from_index in io_msg_grab_file 2023-06-20 09:36:22 -06:00
msg_ring.h io_uring: get rid of double locking 2022-12-07 06:47:13 -07:00
net.c io_uring/net: ensure socket is marked connected on connect retry 2023-11-20 11:59:38 +01:00
net.h io_uring: Add KASAN support for alloc_caches 2023-04-03 07:16:14 -06:00
nop.c
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nop.h
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notif.c io_uring/notif: add constant for ubuf_info flags 2023-04-15 14:21:04 -06:00
notif.h io_uring/notif: add constant for ubuf_info flags 2023-04-15 14:21:04 -06:00
opdef.c io_uring: Pass whole sqe to commands 2023-05-04 08:19:05 -06:00
opdef.h io_uring: Split io_issue_def struct 2023-01-29 15:17:41 -07:00
openclose.c io_uring: correct check for O_TMPFILE 2023-08-07 12:34:23 -06:00
openclose.h
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poll.c io_uring: never overflow io_aux_cqe 2023-08-11 10:42:57 -06:00
poll.h io_uring: avoid indirect function calls for the hottest task_work 2023-06-02 08:55:37 -06:00
refs.h
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rsrc.c io_uring: fix off-by one bvec index 2023-12-03 07:33:07 +01:00
rsrc.h io_uring/rsrc: Annotate struct io_mapped_ubuf with __counted_by 2023-08-17 19:14:47 -06:00
rw.c assorted fixes all over the place 2023-10-27 16:44:58 -10:00
rw.h io_uring: avoid indirect function calls for the hottest task_work 2023-06-02 08:55:37 -06:00
slist.h io_uring: silence variable ‘prev’ set but not used warning 2023-03-09 10:10:58 -07:00
splice.c io_uring/splice: use fput() directly 2023-08-10 10:24:25 -06:00
splice.h
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sqpoll.c io_uring/fdinfo: remove need for sqpoll lock for thread/pid retrieval 2023-11-28 17:19:52 +00:00
sqpoll.h io_uring/sqpoll: fix io-wq affinity when IORING_SETUP_SQPOLL is used 2023-08-16 13:40:28 -06:00
statx.c io_uring: for requests that require async, force it 2023-01-29 15:18:26 -07:00
statx.h
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sync.c io_uring: for requests that require async, force it 2023-01-29 15:18:26 -07:00
sync.h
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tctx.c io_uring: Add io_uring_setup flag to pre-register ring fd and never install it 2023-05-16 08:06:00 -06:00
tctx.h io_uring: simplify __io_uring_add_tctx_node 2022-10-07 12:25:30 -06:00
timeout.c io_uring: never overflow io_aux_cqe 2023-08-11 10:42:57 -06:00
timeout.h io_uring: remove unused return from io_disarm_next 2022-09-21 13:15:01 -06:00
uring_cmd.c io_uring: simplify big_cqe handling 2023-08-24 17:16:19 -06:00
uring_cmd.h io_uring: Remove unnecessary BUILD_BUG_ON 2023-05-04 08:19:05 -06:00
xattr.c io_uring: for requests that require async, force it 2023-01-29 15:18:26 -07:00
xattr.h
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