[PATCH][next] io_uring: Remove logically dead code in io_splice

From: Gustavo A. R. Silva
Date: Mon May 04 2020 - 11:14:50 EST


In case force_nonblock happens to be true, the function returns
at:

2779 if (force_nonblock)
2780 return -EAGAIN;

before reaching this line of code. So, the null check on force_nonblock
at 2785, is never actually being executed.

Addresses-Coverity-ID: 1492838 ("Logically dead code")
Fixes: 2fb3e82284fc ("io_uring: punt splice async because of inode mutex")
Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
---
fs/io_uring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index e5dfbbd2aa34..4b1efb062f7f 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2782,7 +2782,7 @@ static int io_splice(struct io_kiocb *req, bool force_nonblock)
poff_in = (sp->off_in == -1) ? NULL : &sp->off_in;
poff_out = (sp->off_out == -1) ? NULL : &sp->off_out;
ret = do_splice(in, poff_in, out, poff_out, sp->len, flags);
- if (force_nonblock && ret == -EAGAIN)
+ if (ret == -EAGAIN)
return -EAGAIN;

io_put_file(req, in, (sp->flags & SPLICE_F_FD_IN_FIXED));
--
2.26.0