diff options
| author | Dylan Yudaken <dylany@fb.com> | 2022-06-30 02:12:21 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-07-24 18:39:16 -0600 |
| commit | 32f3c434b14238a2eee0c726a1918de58c07faf6 (patch) | |
| tree | 0a636f8067fcc325416a3a6cbc686a33ba521749 /io_uring | |
| parent | b8c015598c8ef9195b8a2a5089e275c4f64ca999 (diff) | |
io_uring: restore bgid in io_put_kbuf
Attempt to restore bgid. This is needed when recycling unused buffers as
the next time around it will want the correct bgid.
Signed-off-by: Dylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220630091231.1456789-3-dylany@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/kbuf.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/io_uring/kbuf.h b/io_uring/kbuf.h index b3e8c6c5fee1..d6af208d109f 100644 --- a/io_uring/kbuf.h +++ b/io_uring/kbuf.h @@ -103,16 +103,21 @@ static inline void io_kbuf_recycle(struct io_kiocb *req, unsigned issue_flags) static inline unsigned int __io_put_kbuf_list(struct io_kiocb *req, struct list_head *list) { + unsigned int ret = IORING_CQE_F_BUFFER | (req->buf_index << IORING_CQE_BUFFER_SHIFT); + if (req->flags & REQ_F_BUFFER_RING) { - if (req->buf_list) + if (req->buf_list) { + req->buf_index = req->buf_list->bgid; req->buf_list->head++; + } req->flags &= ~REQ_F_BUFFER_RING; } else { + req->buf_index = req->kbuf->bgid; list_add(&req->kbuf->list, list); req->flags &= ~REQ_F_BUFFER_SELECTED; } - return IORING_CQE_F_BUFFER | (req->buf_index << IORING_CQE_BUFFER_SHIFT); + return ret; } static inline unsigned int io_put_kbuf_comp(struct io_kiocb *req) |