Locking a File—Subversion

When you are working, you may want to lock the files you have modified. Locking a file does not prevent other users from modifying the file. However, no one else can commit a file that you have locked unless they steal the lock from you or until you remove the lock. See Unlocking a File—Subversion.

You can steal a lock from another user if you need to commit the locked file while they are working on it. Likewise, another user can steal a lock on a file you have locked.