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a121b8c83c
file system to not fill newly created space with zeros. BFile::SetSize() now uses this, while [f]truncate() does not. This is only a temporary work-around until BFS supports sparse files. * Apps that want to reserve space to fill up later should use BFile::SetSize() for now, as this will be a lot faster than [f]truncate(). * cache_io() and the functions below now use a special mode when you pass in a NULL buffer: for read access, the cache is only populated (useful for prefetching), for write access, the file is filled with zeros. * Implemented BFS's Inode::FillGapWithZeros() using this method now. * Removed extraneous white space. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24555 a95241bf-73f2-0310-859d-f6bbb57e9c96