Goswin von Brederlow: > I could think of three possible values: > > 1) the sum of the st_blocks of both branches (total space used) > 2) min(size/blocksize, sum of st_blocks) (appox. what the file would use) > 3) st_bocks of read-write branch (read-write space used only) 4) calculate st_blocks by merging based upon bitmap (dmpath) Some applications may not like st_blksize either since it may be different per block. One more difficulty (hard to support issue). - open a file on deltafs - unlink it - rmdir its parent - write or fchmod to it - rewind+read or mmap+read from the opened file - cat it be read correctly? J. R. Okajima -- 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
