binderfs_binder_device_create() gets simpler, binderfs_create_dentry() simply goes away...
Signed-off-by: Al Viro <[email protected]> --- drivers/android/binderfs.c | 43 +++++--------------------------------- 1 file changed, 5 insertions(+), 38 deletions(-) diff --git a/drivers/android/binderfs.c b/drivers/android/binderfs.c index be8e64eb39ec..a7b0a773d47f 100644 --- a/drivers/android/binderfs.c +++ b/drivers/android/binderfs.c @@ -183,24 +183,11 @@ static int binderfs_binder_device_create(struct inode *ref_inode, } root = sb->s_root; - inode_lock(d_inode(root)); - - /* look it up */ - dentry = lookup_noperm(&QSTR(name), root); + dentry = simple_start_creating(root, name); if (IS_ERR(dentry)) { - inode_unlock(d_inode(root)); ret = PTR_ERR(dentry); goto err; } - - if (d_really_is_positive(dentry)) { - /* already exists */ - dput(dentry); - inode_unlock(d_inode(root)); - ret = -EEXIST; - goto err; - } - inode->i_private = device; d_instantiate(dentry, inode); fsnotify_create(root->d_inode, dentry); @@ -481,24 +468,6 @@ static struct inode *binderfs_make_inode(struct super_block *sb, int mode) return ret; } -static struct dentry *binderfs_create_dentry(struct dentry *parent, - const char *name) -{ - struct dentry *dentry; - - dentry = lookup_noperm(&QSTR(name), parent); - if (IS_ERR(dentry)) - return dentry; - - /* Return error if the file/dir already exists. */ - if (d_really_is_positive(dentry)) { - dput(dentry); - return ERR_PTR(-EEXIST); - } - - return dentry; -} - struct dentry *binderfs_create_file(struct dentry *parent, const char *name, const struct file_operations *fops, void *data) @@ -508,11 +477,10 @@ struct dentry *binderfs_create_file(struct dentry *parent, const char *name, struct super_block *sb; parent_inode = d_inode(parent); - inode_lock(parent_inode); - dentry = binderfs_create_dentry(parent, name); + dentry = simple_start_creating(parent, name); if (IS_ERR(dentry)) - goto out; + return dentry; sb = parent_inode->i_sb; new_inode = binderfs_make_inode(sb, S_IFREG | 0444); @@ -540,11 +508,10 @@ static struct dentry *binderfs_create_dir(struct dentry *parent, struct super_block *sb; parent_inode = d_inode(parent); - inode_lock(parent_inode); - dentry = binderfs_create_dentry(parent, name); + dentry = simple_start_creating(parent, name); if (IS_ERR(dentry)) - goto out; + return dentry; sb = parent_inode->i_sb; new_inode = binderfs_make_inode(sb, S_IFDIR | 0755); -- 2.47.3
