diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-09-16 14:50:14 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-09-16 14:50:14 +0300 |
| commit | adfc3ded5c33d67e822525f95404ef0becb099b8 (patch) | |
| tree | 60b29e7650d2482cee936505e1b5c3363005efdd /include/uapi | |
| parent | 26bb0d3f38a764b743a3ad5c8b6e5b5044d7ceb4 (diff) | |
| parent | 50c52250e2d74b098465841163c18f4b4e9ad430 (diff) | |
| download | linux-adfc3ded5c33d67e822525f95404ef0becb099b8.tar.xz | |
Merge tag 'for-6.12/io_uring-discard-20240913' of git://git.kernel.dk/linux
Pull io_uring async discard support from Jens Axboe:
"Sitting on top of both the 6.12 block and io_uring core branches,
here's support for async discard through io_uring.
This allows applications to issue async discards, rather than rely on
the blocking sync ioctl discards we already have. The sync support is
difficult to use outside of idle/cleanup periods.
On a real (but slow) device, testing shows the following results when
compared to sync discard:
qd64 sync discard: 21K IOPS, lat avg 3 msec (max 21 msec)
qd64 async discard: 76K IOPS, lat avg 845 usec (max 2.2 msec)
qd64 sync discard: 14K IOPS, lat avg 5 msec (max 25 msec)
qd64 async discard: 56K IOPS, lat avg 1153 usec (max 3.6 msec)
and synthetic null_blk testing with the same queue depth and block
size settings as above shows:
Type Trim size IOPS Lat avg (usec) Lat Max (usec)
==============================================================
sync 4k 144K 444 20314
async 4k 1353K 47 595
sync 1M 56K 1136 21031
async 1M 94K 680 760"
* tag 'for-6.12/io_uring-discard-20240913' of git://git.kernel.dk/linux:
block: implement async io_uring discard cmd
block: introduce blk_validate_byte_range()
filemap: introduce filemap_invalidate_pages
io_uring/cmd: give inline space in request to cmds
io_uring/cmd: expose iowq to cmds
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/blkdev.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/uapi/linux/blkdev.h b/include/uapi/linux/blkdev.h new file mode 100644 index 000000000000..66373cd1a83a --- /dev/null +++ b/include/uapi/linux/blkdev.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef _UAPI_LINUX_BLKDEV_H +#define _UAPI_LINUX_BLKDEV_H + +#include <linux/ioctl.h> +#include <linux/types.h> + +/* + * io_uring block file commands, see IORING_OP_URING_CMD. + * It's a different number space from ioctl(), reuse the block's code 0x12. + */ +#define BLOCK_URING_CMD_DISCARD _IO(0x12, 0) + +#endif |