linux-kernel - [PATCH 07/13] Use path_put() in a few places instead of {mnt,d}put()

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Message-ID: <20071022065953.GH6489@in.ibm.com>
Date:	Mon, 22 Oct 2007 12:29:53 +0530
From:	Bharata B Rao <bharata@...ux.vnet.ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Jan Blunck <jblunck@...e.de>, Andreas Gruenbacher <agruen@...e.de>,
	Christoph Hellwig <hch@....de>, viro@...iv.linux.org.uk,
	linux-kernel@...r.kernel.org
Subject: [PATCH 07/13] Use path_put() in a few places instead of {mnt,d}put()

From: Jan Blunck <jblunck@...e.de>

Use path_put() in a few places instead of {mnt,d}put()

Signed-off-by: Jan Blunck <jblunck@...e.de>
Signed-off-by: Andreas Gruenbacher <agruen@...e.de>
Signed-off-by: Bharata B Rao <bharata@...ux.vnet.ibm.com>
Acked-by: Christoph Hellwig <hch@....de>
---
 fs/afs/mntpt.c |    3 +--
 fs/namei.c     |   15 +++++----------
 2 files changed, 6 insertions(+), 12 deletions(-)

--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -235,8 +235,7 @@ static void *afs_mntpt_follow_link(struc
 	err = do_add_mount(newmnt, nd, MNT_SHRINKABLE, &afs_vfsmounts);
 	switch (err) {
 	case 0:
-		dput(nd->path.dentry);
-		mntput(nd->path.mnt);
+		path_put(&nd->path);
 		nd->path.mnt = newmnt;
 		nd->path.dentry = dget(newmnt->mnt_root);
 		schedule_delayed_work(&afs_mntpt_expiry_timer,
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -626,8 +626,7 @@ static __always_inline int __do_follow_l
 		if (dentry->d_inode->i_op->put_link)
 			dentry->d_inode->i_op->put_link(dentry, nd, cookie);
 	}
-	dput(dentry);
-	mntput(path->mnt);
+	path_put(path);
 
 	return error;
 }
@@ -1034,8 +1033,7 @@ static int fastcall link_path_walk(const
 		result = __link_path_walk(name, nd);
 	}
 
-	dput(save.path.dentry);
-	mntput(save.path.mnt);
+	path_put(&save.path);
 
 	return result;
 }
@@ -1057,8 +1055,7 @@ static int __emul_lookup_dentry(const ch
 
 	if (!nd->path.dentry->d_inode ||
 	    S_ISDIR(nd->path.dentry->d_inode->i_mode)) {
-		struct dentry *old_dentry = nd->path.dentry;
-		struct vfsmount *old_mnt = nd->path.mnt;
+		struct path old_path = nd->path;
 		struct qstr last = nd->last;
 		int last_type = nd->last_type;
 		struct fs_struct *fs = current->fs;
@@ -1074,14 +1071,12 @@ static int __emul_lookup_dentry(const ch
 		read_unlock(&fs->lock);
 		if (path_walk(name, nd) == 0) {
 			if (nd->path.dentry->d_inode) {
-				dput(old_dentry);
-				mntput(old_mnt);
+				path_put(&old_path);
 				return 1;
 			}
 			path_put(&nd->path);
 		}
-		nd->path.dentry = old_dentry;
-		nd->path.mnt = old_mnt;
+		nd->path = old_path;
 		nd->last = last;
 		nd->last_type = last_type;
 	}
-
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