tree 924baccaa8a5a56610db5c66020847b457679736
parent 3e6c05052c262ebe7fdd85e75e9d4f956cdd8d82
author Miklos Szeredi <mszeredi@suse.cz> 1276007325 +0200
committer Jens Axboe <jaxboe@fusionio.com> 1276189714 +0200

pipe: fix pipe buffer resizing

pipe_set_size() needs to copy pipe bufs from the old circular buffer
to the new.

The current code gets this wrong in multiple ways, resulting in oops.

Test program is available here:
  http://www.kernel.org/pub/linux/kernel/people/mszeredi/piperesize/

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>