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| author | Jens Axboe <axboe@kernel.dk> | 2022-03-10 09:54:25 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-03-10 09:55:01 -0700 |
| commit | 2be2eb02e2f5a096c351e5b70c46cfef259dabcd (patch) | |
| tree | 2bce97d432297155f1a845169e2f5302108cbbe4 /fs/io_uring.c | |
| parent | 9af177ee3ef14c17ef10893c257fa4e2008a3d74 (diff) | |
| download | linux-2be2eb02e2f5a096c351e5b70c46cfef259dabcd.tar.bz2 | |
io_uring: ensure reads re-import for selected buffers
If we drop buffers between scheduling a retry, then we need to re-import
when we start the request again.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 4d8366bc226f..584b36dcd0aa 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -3737,6 +3737,16 @@ static int io_read(struct io_kiocb *req, unsigned int issue_flags) if (unlikely(ret < 0)) return ret; } else { + /* + * Safe and required to re-import if we're using provided + * buffers, as we dropped the selected one before retry. + */ + if (req->flags & REQ_F_BUFFER_SELECT) { + ret = io_import_iovec(READ, req, &iovec, s, issue_flags); + if (unlikely(ret < 0)) + return ret; + } + rw = req->async_data; s = &rw->s; /* |