linux-kernel - [PATCH 1/2] vfs: stop clearing close on exec when closing a fd

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Date:   Tue,  3 Oct 2017 12:58:14 +0200
From:   Mateusz Guzik <mguzik@...hat.com>
To:     Eric Dumazet <edumazet@...gle.com>,
        Al Viro <viro@...iv.linux.org.uk>
Cc:     mszeredi@...hat.com, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] vfs: stop clearing close on exec when closing a fd

Codepaths allocating a fd always make sure the bit is set/unset
depending on flags, thus clearing on close is redundant.

Signed-off-by: Mateusz Guzik <mguzik@...hat.com>
---
 fs/file.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/file.c b/fs/file.c
index 1fc7fbb..9d047bd 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -631,7 +631,6 @@ int __close_fd(struct files_struct *files, unsigned fd)
 	if (!file)
 		goto out_unlock;
 	rcu_assign_pointer(fdt->fd[fd], NULL);
-	__clear_close_on_exec(fd, fdt);
 	__put_unused_fd(files, fd);
 	spin_unlock(&files->file_lock);
 	return filp_close(file, files);
-- 
1.8.3.1