reiser4: rewrite handling compressed files at flush time

This is mostly equivalent transform.
The result looks better, there are more chances to understand what is
going on.

Signed-off-by: Edward Shishkin <edward.shishkin@gmail.com>
reiser4: don't panic in do_readpage_ctail

Don't panic when unprepped ctail cluster is found.
Instead, return error and suggest to fsck.

Signed-off-by: Edward Shishkin <edward.shishkin@gmail.com>
reiser4: fix up compile errors when debug is on

Signed-off-by: Edward Shishkin <edward.shishkin@gmail.com>
Merge branch 'reiser4-3.4' into reiser4-3.10
Merge branch 'reiser4-3.10' into reiser4-3.12
reiser4: add an assignment in writeback_sb_inodes missed in the forward port for 3.11

Add an assignment in writeback_sb_inodes() missed in
the forward port for 3.11

Signed-off-by: Edward Shishkin <edward.shishkin@gmail.com>
Merge branch 'reiser4-3.11' into reiser4-3.12