mksquashfs: change the index used when adding fragments to the writer cache

Distinguish fragment blocks from file blocks in the writer cache on
lookup by using negative indexes for fragments.

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
1 file changed
tree: bff8c290b5a3651fc0d051d507e75a3ee4530cbb
  1. kernel/
  2. kernel-2.4/
  3. squashfs-tools/
  4. README