linux-kernel - [RFC][PATCH 04/42] make get_empty_filp() to call file_free

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Message-Id: <20180711022206.12571-4-viro@ZenIV.linux.org.uk>
Date:   Wed, 11 Jul 2018 03:21:28 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Miklos Szeredi <mszeredi@...hat.com>
Subject: [RFC][PATCH 04/42] make get_empty_filp() to call file_free_rcu() directly

From: Al Viro <viro@...iv.linux.org.uk>

no point in rcu-delays here

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 fs/file_table.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/file_table.c b/fs/file_table.c
index 7ec0b3e5f05d..1f14b80a4e67 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -123,11 +123,10 @@ struct file *get_empty_filp(void)
 	if (unlikely(!f))
 		return ERR_PTR(-ENOMEM);
 
-	percpu_counter_inc(&nr_files);
 	f->f_cred = get_cred(cred);
 	error = security_file_alloc(f);
 	if (unlikely(error)) {
-		file_free(f);
+		file_free_rcu(&f->f_u.fu_rcuhead);
 		return ERR_PTR(error);
 	}
 
@@ -137,6 +136,7 @@ struct file *get_empty_filp(void)
 	mutex_init(&f->f_pos_lock);
 	eventpoll_init_file(f);
 	/* f->f_version: 0 */
+	percpu_counter_inc(&nr_files);
 	return f;
 
 over:
-- 
2.11.0