tree 3b93a095eb1237e8d74f52553b69b666e6044f7d
parent 7691030bc9732f7d535522dda78cfdd36716def1
author Peter Oberparleiter <peter.oberparleiter@de.ibm.com> 1152531840 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1152563054 -0700

[PATCH] partitions: let partitions inherit policy from disk

Change the partition code in fs/partitions/check.c to initialize a newly
detected partition's policy field with that of the containing block device
(see patch below).

My reasoning is that function set_disk_ro() in block/genhd.c modifies the
policy field (read-only indicator) of a disk and all contained partitions.
When a partition is detected after the call to set_disk_ro(), the policy
field of this partition will currently not inherit the disk's policy field.
 This behavior poses a problem in cases where a block device can be
'logically de- and reactivated' like e.g.  the s390 DASD driver because
partition detection may run after the policy field has been modified.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Acked-by: Al Viro <viro@ftp.linux.org.uk>
Makes-sense-to: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>