linux-kernel - [PATCH 5/8] fs/9p: One function call less in v9fs_vfs_atomic_open

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Date:	Sun, 28 Dec 2014 21:46:06 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Eric Van Hensbergen <ericvh@...il.com>,
	Latchesar Ionkov <lucho@...kov.net>,
	Ron Minnich <rminnich@...dia.gov>,
	v9fs-developer@...ts.sourceforge.net
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 5/8] fs/9p: One function call less in v9fs_vfs_atomic_open_dotl()
 after error detection

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sun, 28 Dec 2014 09:29:40 +0100

The p9_client_clunk() function was called in three cases by the
v9fs_vfs_atomic_open_dotl() function during error handling even if the passed
variable "fid" contained a null pointer.

This implementation detail could be improved by the adjustment of jump targets.
Let us delete also an unnecessary variable assignment there.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 fs/9p/vfs_inode_dotl.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index 3611b0f..ce1f5bb 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -297,14 +297,14 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry,
 	if (err) {
 		p9_debug(P9_DEBUG_VFS, "Failed to get acl values in creat %d\n",
 			 err);
-		goto error;
+		goto err_clunk_old_fid;
 	}
 	err = p9_client_create_dotl(ofid, name, v9fs_open_to_dotl_flags(flags),
 				    mode, gid, &qid);
 	if (err < 0) {
 		p9_debug(P9_DEBUG_VFS, "p9_client_open_dotl failed in creat %d\n",
 			 err);
-		goto error;
+		goto err_clunk_old_fid;
 	}
 	v9fs_invalidate_inode_attr(dir);
 
@@ -313,8 +313,7 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry,
 	if (IS_ERR(fid)) {
 		err = PTR_ERR(fid);
 		p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err);
-		fid = NULL;
-		goto error;
+		goto err_clunk_old_fid;
 	}
 	inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
 	if (IS_ERR(inode)) {
-- 
2.2.1

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