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| author |   Jens Axboe <axboe@kernel.dk> | 2020-03-02 16:32:28 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-03-10 09:12:56 -0600 |
| commit | 067524e914cb23e20d59480b318fe2625eaee7c8 (patch) | |
| tree | 376efdc15300761b8d383cd249dffd2af24ca624 /include/uapi/linux/io_uring.h | |
| parent | io_uring: add IOSQE_BUFFER_SELECT support for IORING_OP_RECVMSG (diff) | |
| download | linux-dev-067524e914cb23e20d59480b318fe2625eaee7c8.tar.xz linux-dev-067524e914cb23e20d59480b318fe2625eaee7c8.zip | |
io_uring: provide means of removing buffers
We have IORING_OP_PROVIDE_BUFFERS, but the only way to remove buffers
is to trigger IO on them. The usual case of shrinking a buffer pool
would be to just not replenish the buffers when IO completes, and
instead just free it. But it may be nice to have a way to manually
remove a number of buffers from a given group, and
IORING_OP_REMOVE_BUFFERS provides that functionality.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/uapi/linux/io_uring.h')
| -rw-r--r-- | include/uapi/linux/io_uring.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index 9b263d9b24e6..cef4c0c0f26b 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -128,6 +128,7 @@ enum { IORING_OP_EPOLL_CTL, IORING_OP_SPLICE, IORING_OP_PROVIDE_BUFFERS, + IORING_OP_REMOVE_BUFFERS, /* this goes last, obviously */ IORING_OP_LAST, |