On Fri, Apr 27, 2007 at 11:06:47AM -0400, Jeff Dike wrote: > On Thu, Apr 26, 2007 at 09:58:25PM -0700, Valerie Henson wrote: > > Here's an example, spelled out: > > > > Allocate file 1 in chunk A. > > Grow file 1. > > Chunk A fills up. > > Allocate continuation inode for file 1 in chunk B. > > Chunk A gets some free space. > > Chunk B fills up. > > Pick chunk A for allocating next block of file 1. > > Try to look up a continuation inode for file 1 in chunk A. > > Continuation inode for file 1 found in chunk A! > > Attach newly allocated block to existing inode for file 1 in chunk A. > > So far, so good (and the slides are helpful, tx!). What happens when > file 1 keeps growing and chunk A fills up (and chunk B is still full)? > Can the same continuation inode also point at chunk C, where the file > is going to grow to? You allocate a new continuation inode in chunk C. The rule is that only inodes inside a chunk can point to blocks inside the chunk, so you need an inode in C if you want to allocate blocks from C. -VAL - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
