tree 529f3a2c212aaa6aa5010c41aa9ec59bd6635c17
parent 5a3ceb861663040f9ef0176df4aaa494bba5e352
author Tejun Heo <tj@kernel.org> 1219660212 +0900
committer Jens Axboe <jens.axboe@oracle.com> 1223535364 +0200

block: fix partition info printouts

Recent block_class iteration updates 5c6f35c5..27f3025 broke partition
info printouts.

* printk_all_partitions(): Partition print out stops when it meets a
  partition hole.  Partition printing inner loop should continue
  instead of exiting on empty partition slot.

* /proc/partitions and /proc/diskstats: If all information can't be
  read in single read(), the information is truncated.  This is
  because find_start() doesn't actually update the counter containing
  the initial seek.  It runs to the end and ends up always reporting
  EOF on the second read.

This patch fixes both problems.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>