[PATCH RESEND 01/11] splice: copy_splice_read: do the I/O with IOCB_NOWAIT

From: Ahelenia Ziemiańska
Date: Tue Dec 12 2023 - 05:12:41 EST


Otherwise we risk sleeping with the pipe locked for indeterminate
lengths of time.

Link: https://lore.kernel.org/linux-fsdevel/qk6hjuam54khlaikf2ssom6custxf5is2ekkaequf4hvode3ls@zgf7j5j4ubvw/t/#u
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@xxxxxxxxxxxxxxxxxx>
---
fs/splice.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/fs/splice.c b/fs/splice.c
index d983d375ff11..9d29664f23ee 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -361,6 +361,7 @@ ssize_t copy_splice_read(struct file *in, loff_t *ppos,
iov_iter_bvec(&to, ITER_DEST, bv, npages, len);
init_sync_kiocb(&kiocb, in);
kiocb.ki_pos = *ppos;
+ kiocb.ki_flags |= IOCB_NOWAIT;
ret = call_read_iter(in, &kiocb, &to);

if (ret > 0) {
--
2.39.2

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