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authorSage Weil <sage@newdream.net>2011-05-24 13:06:12 -0700
committerAl Viro <viro@zeniv.linux.org.uk>2011-05-26 07:26:52 -0400
commit9055cba711891a6313232629cd6bbca7c901e07f (patch)
tree877880a16f0ec062c82ef36886ca5c2257ee9e89 /fs/namei.c
parent912dbc15d953791f013b0c64a8093ab0490e5f40 (diff)
vfs: clean up vfs_rename_dir
Simplify control flow through vfs_rename_dir. Signed-off-by: Sage Weil <sage@newdream.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namei.c')
-rw-r--r--fs/namei.c26
1 files changed, 15 insertions, 11 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 18c3293411f..ecb16d3727e 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2963,7 +2963,7 @@ static int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
{
int error = 0;
- struct inode *target;
+ struct inode *target = new_dentry->d_inode;
/*
* If we are going to change the parent - check write permissions,
@@ -2979,20 +2979,24 @@ static int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
if (error)
return error;
- target = new_dentry->d_inode;
if (target)
mutex_lock(&target->i_mutex);
- if (d_mountpoint(old_dentry)||d_mountpoint(new_dentry))
- error = -EBUSY;
- else
- error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry);
+
+ error = -EBUSY;
+ if (d_mountpoint(old_dentry) || d_mountpoint(new_dentry))
+ goto out;
+
+ error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry);
+ if (error)
+ goto out;
+
if (target) {
- if (!error) {
- target->i_flags |= S_DEAD;
- dont_mount(new_dentry);
- }
- mutex_unlock(&target->i_mutex);
+ target->i_flags |= S_DEAD;
+ dont_mount(new_dentry);
}
+out:
+ if (target)
+ mutex_unlock(&target->i_mutex);
if (!error)
if (!(old_dir->i_sb->s_type->fs_flags & FS_RENAME_DOES_D_MOVE))
d_move(old_dentry,new_dentry);