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linux-stable/io_uring
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Jens Axboe 7dc1ed215b io_uring/rw: don't allow multishot reads without NOWAIT support 
commit 2a975d426c82ff05ec1f0b773798d909fe4a3105 upstream.

Supporting multishot reads requires support for NOWAIT, as the
alternative would be always having io-wq execute the work item whenever
the poll readiness triggered. Any fast file type will have NOWAIT
support (eg it understands both O_NONBLOCK and IOCB_NOWAIT). If the
given file type does not, then simply resort to single shot execution.

Cc: stable@vger.kernel.org
Fixes: fc68fcda04910 ("io_uring/rw: add support for IORING_OP_READ_MULTISHOT")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-04-10 16:38:16 +02:00
..
advise.c
io_uring: always go async for unsupported fadvise flags
2023-01-29 15:18:26 -07:00
advise.h
io_uring: split out fadvise/madvise operations
2022-07-24 18:39:11 -06:00
alloc_cache.h
io_uring: use mempool KASAN hook
2023-12-29 11:58:41 -08:00
cancel.c
io_uring: use fget/fput consistently
2023-11-28 11:56:29 -07:00
cancel.h
io_uring: add support for futex wake and wait
2023-09-29 02:36:57 -06:00
epoll.c
io_uring: undeprecate epoll_ctl support
2023-05-26 20:22:41 -06:00
epoll.h
io_uring: move epoll handler to its own file
2022-07-24 18:39:11 -06:00
fdinfo.c
io_uring/fdinfo: remove need for sqpoll lock for thread/pid retrieval
2023-11-15 06:35:46 -07:00
fdinfo.h
io_uring: move fdinfo helpers to its own file
2022-07-24 18:39:12 -06:00
filetable.c
io_uring: drop any code related to SCM_RIGHTS
2023-12-19 12:36:34 -07:00
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
2023-11-20 09:01:42 -07:00
fs.h
io_uring: split out filesystem related operations
2022-07-24 18:39:11 -06:00
futex.c
io_uring/futex: always remove futex entry for cancel all
2024-04-03 15:32:24 +02:00
futex.h
io_uring: add support for vectored futex waits
2023-09-29 02:37:08 -06:00
io_uring.c
io_uring/kbuf: get rid of lower BGID lists
2024-04-10 16:38:16 +02:00
io_uring.h
io_uring/poll: add requeue return code from poll multishot handling
2024-01-29 13:19:47 -07:00
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
kbuf.c
io_uring/kbuf: protect io_buffer_list teardown with a reference
2024-04-10 16:38:16 +02:00
kbuf.h
io_uring/kbuf: protect io_buffer_list teardown with a reference
2024-04-10 16:38:16 +02:00
Makefile
io_uring/register: move io_uring_register(2) related code to register.c
2023-12-19 08:54:20 -07:00
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: fix mshot io-wq checks
2024-04-03 15:32:17 +02:00
net.h
io_uring: Add KASAN support for alloc_caches
2023-04-03 07:16:14 -06:00
nop.c
io_uring: kill extra io_uring_types.h includes
2022-07-24 18:39:14 -06:00
nop.h
io_uring: move nop into its own file
2022-07-24 18:39:11 -06:00
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: enable audit and restrict cred override for IORING_OP_FIXED_FD_INSTALL
2024-01-23 15:25:14 -07:00
opdef.h
io_uring/rw: mark readv/writev as vectored in the opcode definition
2023-09-21 12:00:46 -06:00
openclose.c
io_uring: enable audit and restrict cred override for IORING_OP_FIXED_FD_INSTALL
2024-01-23 15:25:14 -07:00
openclose.h
io_uring/openclose: add support for IORING_OP_FIXED_FD_INSTALL
2023-12-12 07:42:57 -07:00
poll.c
io_uring: fix io_queue_proc modifying req->flags
2024-04-03 15:32:16 +02:00
poll.h
io_uring/rw: ensure poll based multishot read retries appropriately
2024-01-28 20:37:11 -07:00
refs.h
io_uring: make io_uring_types.h public
2022-07-24 18:39:14 -06:00
register.c
io_uring/register: guard compat syscall with CONFIG_COMPAT
2024-01-17 09:45:18 -07:00
register.h
io_uring/register: move io_uring_register(2) related code to register.c
2023-12-19 08:54:20 -07:00
rsrc.c
io_uring: drop any code related to SCM_RIGHTS
2023-12-19 12:36:34 -07:00
rsrc.h
io_uring/rsrc: improve code generation for fixed file assignment
2024-01-11 13:37:31 -07:00
rw.c
io_uring/rw: don't allow multishot reads without NOWAIT support
2024-04-10 16:38:16 +02:00
rw.h
io_uring/rw: add separate prep handler for fixed read/write
2023-11-06 07:43:16 -07:00
slist.h
io_uring: silence variable ‘prev’ set but not used warning
2023-03-09 10:10:58 -07:00
splice.c
splice: return type ssize_t from all helpers
2023-12-12 16:19:59 +01:00
splice.h
io_uring: split out splice related operations
2022-07-24 18:39:11 -06:00
sqpoll.c
io_uring/fdinfo: remove need for sqpoll lock for thread/pid retrieval
2023-11-15 06:35:46 -07:00
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
io_uring: move statx handling to its own file
2022-07-24 18:39:11 -06:00
sync.c
io_uring: for requests that require async, force it
2023-01-29 15:18:26 -07:00
sync.h
io_uring: split out fs related sync/fallocate functions
2022-07-24 18:39:11 -06:00
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
for-6.8/io_uring-2024-01-08
2024-01-11 14:19:23 -08:00
uring_cmd.h
io_uring: Remove unnecessary BUILD_BUG_ON
2023-05-04 08:19:05 -06:00
waitid.c
io_uring/waitid: always remove waitid entry for cancel all
2024-04-03 15:32:24 +02:00
waitid.h
io_uring: add IORING_OP_WAITID support
2023-09-21 12:04:45 -06:00
xattr.c
io_uring: for requests that require async, force it
2023-01-29 15:18:26 -07:00
xattr.h
io_uring: move xattr related opcodes to its own file
2022-07-24 18:39:11 -06:00