linux-kernel - [PATCH 3/3] fs: __fget_light() can use _

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Message-ID: <20140113154906.GD6496@redhat.com>
Date:	Mon, 13 Jan 2014 16:49:06 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Al Viro <viro@...IV.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Dipankar Sarma <dipankar@...ibm.com>,
	Eric Dumazet <edumazet@...gle.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] fs: __fget_light() can use __fget() in slow path

The slow path in __fget_light() can use __fget() to avoid the
code duplication. Saves 232 bytes.

Signed-off-by: Oleg Nesterov <oleg@...hat.com>
---
 fs/file.c |   14 +++-----------
 1 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/fs/file.c b/fs/file.c
index 50c1208..771578b 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -694,17 +694,9 @@ struct file *__fget_light(unsigned int fd, fmode_t mask, int *fput_needed)
 		if (file && (file->f_mode & mask))
 			file = NULL;
 	} else {
-		rcu_read_lock();
-		file = fcheck_files(files, fd);
-		if (file) {
-			if (!(file->f_mode & mask) &&
-			    atomic_long_inc_not_zero(&file->f_count))
-				*fput_needed = 1;
-			else
-				/* Didn't get the reference, someone's freed */
-				file = NULL;
-		}
-		rcu_read_unlock();
+		file = __fget(fd, mask);
+		if (file)
+			*fput_needed = 1;
 	}
 
 	return file;
-- 
1.5.5.1


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