linux-kernel - [PATCH 04/12] VFS: move dput() and mnt_drop_write() into done_path

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Date:   Tue, 14 Jun 2022 09:18:21 +1000
From:   NeilBrown <neilb@...e.de>
To:     Al Viro <viro@...iv.linux.org.uk>, Daire Byrne <daire@...g.com>,
        Trond Myklebust <trond.myklebust@...merspace.com>,
        Chuck Lever <chuck.lever@...cle.com>
Cc:     Linux NFS Mailing List <linux-nfs@...r.kernel.org>,
        linux-fsdevel@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 04/12] VFS: move dput() and mnt_drop_write() into
 done_path_update()

All calls to done_path_update() are followed by the same two calls, so
merge them in.

Signed-off-by: NeilBrown <neilb@...e.de>
---
 fs/namei.c |    8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/fs/namei.c b/fs/namei.c
index 83ce2f7083be..f13bff877e30 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1732,6 +1732,8 @@ static void done_path_update(struct path *path, struct dentry *dentry,
 	} else {
 		inode_unlock(dir);
 	}
+	dput(dentry);
+	mnt_drop_write(path->mnt);
 }
 
 static struct dentry *lookup_fast(struct nameidata *nd,
@@ -3953,8 +3955,6 @@ void done_path_create_wq(struct path *path, struct dentry *dentry,
 			 wait_queue_head_t *wq)
 {
 	done_path_update(path, dentry, wq);
-	dput(dentry);
-	mnt_drop_write(path->mnt);
 	path_put(path);
 }
 EXPORT_SYMBOL(done_path_create_wq);
@@ -4276,8 +4276,6 @@ int do_rmdir(int dfd, struct filename *name)
 	error = vfs_rmdir(mnt_userns, path.dentry->d_inode, dentry);
 exit3:
 	done_path_update(&path, dentry, &wq);
-	dput(dentry);
-	mnt_drop_write(path.mnt);
 exit2:
 	path_put(&path);
 	if (retry_estale(error, lookup_flags)) {
@@ -4412,8 +4410,6 @@ int do_unlinkat(int dfd, struct filename *name)
 				   &delegated_inode);
 exit3:
 		done_path_update(&path, dentry, &wq);
-		dput(dentry);
-		mnt_drop_write(path.mnt);
 	}
 	if (inode)
 		iput(inode);	/* truncate the inode here */