From: mudongliang <mudongliangabcd@xxxxxxxxx>
kfree can handle NULL pointer as its argument.
According to coccinelle isnullfree check, remove NULL check
before kfree operation.
Signed-off-by: mudongliang <mudongliangabcd@xxxxxxxxx>
---
fs/io_uring.c | 15 +++++----------
1 file changed, 5 insertions(+), 10 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 3aab4182fd89..bec47eae2a9b 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3159,8 +3159,7 @@ static void io_free_batch_list(struct io_ring_ctx *ctx,
if ((req->flags & REQ_F_POLLED) && req->apoll) {
struct async_poll *apoll = req->apoll;
- if (apoll->double_poll)
- kfree(apoll->double_poll);
+ kfree(apoll->double_poll);
list_add(&apoll->poll.wait.entry,
&ctx->apoll_cache);
req->flags &= ~REQ_F_POLLED;
@@ -4499,8 +4498,7 @@ static int io_read(struct io_kiocb *req, unsigned int issue_flags)
kiocb_done(req, ret, issue_flags);
out_free:
/* it's faster to check here then delegate to kfree */
- if (iovec)
- kfree(iovec);
+ kfree(iovec);
return 0;
}
@@ -4602,8 +4600,7 @@ static int io_write(struct io_kiocb *req, unsigned int issue_flags)
}
out_free:
/* it's reportedly faster than delegating the null check to kfree() */
- if (iovec)
- kfree(iovec);
+ kfree(iovec);
return ret;
}
@@ -6227,8 +6224,7 @@ static int io_sendmsg(struct io_kiocb *req, unsigned int issue_flags)
req_set_fail(req);
}
/* fast path, check for non-NULL to avoid function call */
- if (kmsg->free_iov)
- kfree(kmsg->free_iov);
+ kfree(kmsg->free_iov);
req->flags &= ~REQ_F_NEED_CLEANUP;
if (ret >= 0)
ret += sr->done_io;
@@ -6481,8 +6477,7 @@ static int io_recvmsg(struct io_kiocb *req, unsigned int issue_flags)
}
/* fast path, check for non-NULL to avoid function call */
- if (kmsg->free_iov)
- kfree(kmsg->free_iov);
+ kfree(kmsg->free_iov);
req->flags &= ~REQ_F_NEED_CLEANUP;
if (ret >= 0)
ret += sr->done_io;
--
2.35.1
