diff options
Diffstat (limited to 'io_uring/rw.c')
-rw-r--r-- | io_uring/rw.c | 60 |
1 files changed, 35 insertions, 25 deletions
diff --git a/io_uring/rw.c b/io_uring/rw.c index 64390d4e20c1..118cc9f1cf16 100644 --- a/io_uring/rw.c +++ b/io_uring/rw.c @@ -10,7 +10,7 @@ #include <linux/poll.h> #include <linux/nospec.h> #include <linux/compat.h> -#include <linux/io_uring.h> +#include <linux/io_uring/cmd.h> #include <uapi/linux/io_uring.h> @@ -168,27 +168,6 @@ void io_readv_writev_cleanup(struct io_kiocb *req) kfree(io->free_iovec); } -static inline void io_rw_done(struct kiocb *kiocb, ssize_t ret) -{ - switch (ret) { - case -EIOCBQUEUED: - break; - case -ERESTARTSYS: - case -ERESTARTNOINTR: - case -ERESTARTNOHAND: - case -ERESTART_RESTARTBLOCK: - /* - * We can't just restart the syscall, since previously - * submitted sqes may already be in progress. Just fail this - * IO with EINTR. - */ - ret = -EINTR; - fallthrough; - default: - kiocb->ki_complete(kiocb, ret); - } -} - static inline loff_t *io_kiocb_update_pos(struct io_kiocb *req) { struct io_rw *rw = io_kiocb_to_cmd(req, struct io_rw); @@ -371,6 +350,33 @@ static void io_complete_rw_iopoll(struct kiocb *kiocb, long res) smp_store_release(&req->iopoll_completed, 1); } +static inline void io_rw_done(struct kiocb *kiocb, ssize_t ret) +{ + /* IO was queued async, completion will happen later */ + if (ret == -EIOCBQUEUED) + return; + + /* transform internal restart error codes */ + if (unlikely(ret < 0)) { + switch (ret) { + case -ERESTARTSYS: + case -ERESTARTNOINTR: + case -ERESTARTNOHAND: + case -ERESTART_RESTARTBLOCK: + /* + * We can't just restart the syscall, since previously + * submitted sqes may already be in progress. Just fail + * this IO with EINTR. + */ + ret = -EINTR; + break; + } + } + + INDIRECT_CALL_2(kiocb->ki_complete, io_complete_rw_iopoll, + io_complete_rw, kiocb, ret); +} + static int kiocb_done(struct io_kiocb *req, ssize_t ret, unsigned int issue_flags) { @@ -589,15 +595,19 @@ static inline int io_rw_prep_async(struct io_kiocb *req, int rw) struct iovec *iov; int ret; + iorw->bytes_done = 0; + iorw->free_iovec = NULL; + /* submission path, ->uring_lock should already be taken */ ret = io_import_iovec(rw, req, &iov, &iorw->s, 0); if (unlikely(ret < 0)) return ret; - iorw->bytes_done = 0; - iorw->free_iovec = iov; - if (iov) + if (iov) { + iorw->free_iovec = iov; req->flags |= REQ_F_NEED_CLEANUP; + } + return 0; } |