From: Mateusz Guzik <mjguzik@gmail.com>
Date: Mon, 3 Mar 2025 23:04:07 +0000 (+0100)
Subject: pipe: drop an always true check in anon_pipe_write()
X-Git-Tag: v6.15-rc1~251^2~2^2~2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a40cd5849dab4906f54f27e28561bd9298455bcf;p=thirdparty%2Flinux.git

pipe: drop an always true check in anon_pipe_write()

The check operates on the stale value of 'head' and always loops back.

Just do it unconditionally. No functional changes.

Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Link: https://lore.kernel.org/r/20250303230409.452687-2-mjguzik@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
---

diff --git a/fs/pipe.c b/fs/pipe.c
index b0641f75b1bae..b60487b650cb7 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -529,10 +529,9 @@ anon_pipe_write(struct kiocb *iocb, struct iov_iter *from)
 
 			if (!iov_iter_count(from))
 				break;
-		}
 
-		if (!pipe_full(head, pipe->tail, pipe->max_usage))
 			continue;
+		}
 
 		/* Wait for buffer space to become available. */
 		if ((filp->f_flags & O_NONBLOCK) ||