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authorMartin K. Petersen <martin.petersen@oracle.com>2015-10-21 13:19:49 -0400
committerJens Axboe <axboe@fb.com>2015-10-21 14:42:42 -0600
commit25520d55cdb6ee289abc68f553d364d22478ff54 (patch)
tree84e447f762e7f60095d0c4d24fdf2d9440f4b06d /block/partition-generic.c
parent4c241d08dbfcbdc7a949b91d72707a289d464954 (diff)
downloadlinux-0-day-25520d55cdb6ee289abc68f553d364d22478ff54.tar.gz
block: Inline blk_integrity in struct gendisk
Up until now the_integrity profile has been dynamically allocated and attached to struct gendisk after the disk has been made active. This causes problems because NVMe devices need to register the profile prior to the partition table being read due to a mandatory metadata buffer requirement. In addition, DM goes through hoops to deal with preallocating, but not initializing integrity profiles. Since the integrity profile is small (4 bytes + a pointer), Christoph suggested moving it to struct gendisk proper. This requires several changes: - Moving the blk_integrity definition to genhd.h. - Inlining blk_integrity in struct gendisk. - Removing the dynamic allocation code. - Adding helper functions which allow gendisk to set up and tear down the integrity sysfs dir when a disk is added/deleted. - Adding a blk_integrity_revalidate() callback for updating the stable pages bdi setting. - The calls that depend on whether a device has an integrity profile or not now key off of the bi->profile pointer. - Simplifying the integrity support routines in DM (Mike Snitzer). Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Reported-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/partition-generic.c')
-rw-r--r--block/partition-generic.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/partition-generic.c b/block/partition-generic.c
index e771113..3b03015 100644
--- a/block/partition-generic.c
+++ b/block/partition-generic.c
@@ -428,6 +428,7 @@ rescan:
if (disk->fops->revalidate_disk)
disk->fops->revalidate_disk(disk);
+ blk_integrity_revalidate(disk);
check_disk_size_change(disk, bdev);
bdev->bd_invalidated = 0;
if (!get_capacity(disk) || !(state = check_partition(disk, bdev)))