leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

for-5.4/io_uring-2019-09-15

Browse Source 
-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAl1+zs8QHGF4Ym9lQGtl
 cm5lbC5kawAKCRD301j7KXHgpvIOD/9P4MhnjTc9sFz978YGw2kP/yUjW0Vs194B
 nV5wmM+J3I6VUBgurNQeB7f14b/1CZnnPjisLKGzz1SKrhRQT/HuXzItsYpzRql3
 3GvD4aRNJd52pfkX3p7tA8uMr5Hh2gnNLhJtlPTaaAiIc8XCme+hHMnlmhwqMZ0T
 FKTc0Pw0yxvYIbxmt+pfWxoKhHrq12dYLG61Iv8XeSCb3k+EzdZV8jQdnN/TVhsF
 ngzxRMvbPjJ/TvDcsdV0qNqmLTojgmuiAvDs/3YPCreGVhMBkm4w/tlZGqTJHSdb
 Ljxzwp0Ungu94O2Ct3gN+pIxTJ5hgfnArfT40fbWczZrlXzUKw4d3mW/QG3g/Elf
 aUfCY+3WWR/Fs+XT5ZDasJDewwO4j5wYgO8VYeyTX08jobcxC/osqoMtGUqsljwJ
 CTWMYSD8MTXEnOIZFK9sgjg0AoJYVDE8SXN/zx+7K7iVk9+5xQTkuL/cCd+3/Nih
 73QqvwpRm0Tik4yLGcw+EJc2ttvNUsI5EEETloiGNaMeK1oOJvzSu8qhh0G9VdYo
 DWka5Yo+kLzwuUMbtzVSq288Un+RjbUIoqrqMFqm5QLqUYYg735IH2McIZvIEHEj
 o0vjudw/yxcpURGqV5cokeusIHex/LC8hItCwHY4U9959A2yOtiCs/Bi7LIj3lAu
 FO5gTlGDHA==
 =KSaR
 -----END PGP SIGNATURE-----

Merge tag 'for-5.4/io_uring-2019-09-15' of git://git.kernel.dk/linux-block

Pull io_uring updates from Jens Axboe:

 - Allocate SQ/CQ ring together, more efficient. Expose this through a
   feature flag as well, so we can reduce the number of mmaps by 1
   (Hristo and me)

 - Fix for sequence logic with SQ thread (Jackie).

 - Add support for links with drain commands (Jackie).

 - Improved async merging (me)

 - Improved buffered async write performance (me)

 - Support SQ poll wakeup + event get in single io_uring_enter() (me)

 - Support larger SQ ring size. For epoll conversions, the 4k limit was
   too small for some prod workloads (Daniel).

 - put_user_page() usage (John)

* tag 'for-5.4/io_uring-2019-09-15' of git://git.kernel.dk/linux-block:
  io_uring: increase IORING_MAX_ENTRIES to 32K
  io_uring: make sqpoll wakeup possible with getevents
  io_uring: extend async work merging
  io_uring: limit parallelism of buffered writes
  io_uring: add io_queue_async_work() helper
  io_uring: optimize submit_and_wait API
  io_uring: add support for link with drain
  io_uring: fix wrong sequence setting logic
  io_uring: expose single mmap capability
  io_uring: allocate the two rings together
  fs/io_uring.c: convert put_page() to put_user_page*()
This commit is contained in:
Linus Torvalds 2019-09-17 16:50:19 -07:00
commit 1e6fa3a33e
2 changed files with 355 additions and 184 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

531
fs/io_uring.c
View File

File diff suppressed because it is too large Load Diff

8
include/uapi/linux/io_uring.h
View File

@ -128,11 +128,17 @@ struct io_uring_params {
__u32 flags;
__u32 sq_thread_cpu;
__u32 sq_thread_idle;
__u32 resv[5];
__u32 features;
__u32 resv[4];
struct io_sqring_offsets sq_off;
struct io_cqring_offsets cq_off;
};
/*
* io_uring_params->features flags
*/
#define IORING_FEAT_SINGLE_MMAP (1U << 0)
/*
* io_uring_register(2) opcodes and arguments
*/