diff options
| -rw-r--r-- | io_uring/rw.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/io_uring/rw.c b/io_uring/rw.c index 8321e004ab13..64390d4e20c1 100644 --- a/io_uring/rw.c +++ b/io_uring/rw.c @@ -912,6 +912,7 @@ int io_read(struct io_kiocb *req, unsigned int issue_flags) int io_read_mshot(struct io_kiocb *req, unsigned int issue_flags) { + struct io_rw *rw = io_kiocb_to_cmd(req, struct io_rw); unsigned int cflags = 0; int ret; @@ -928,7 +929,12 @@ int io_read_mshot(struct io_kiocb *req, unsigned int issue_flags) * handling arm it. */ if (ret == -EAGAIN) { - io_kbuf_recycle(req, issue_flags); + /* + * Reset rw->len to 0 again to avoid clamping future mshot + * reads, in case the buffer size varies. + */ + if (io_kbuf_recycle(req, issue_flags)) + rw->len = 0; return -EAGAIN; } @@ -941,6 +947,7 @@ int io_read_mshot(struct io_kiocb *req, unsigned int issue_flags) * jump to the termination path. This request is then done. */ cflags = io_put_kbuf(req, issue_flags); + rw->len = 0; /* similarly to above, reset len to 0 */ if (io_fill_cqe_req_aux(req, issue_flags & IO_URING_F_COMPLETE_DEFER, |