Commit 87a816df authored Sep 08, 2015 by Sagi Grimberg Committed by Jens Axboe Sep 11, 2015

block: Refuse adding appending a gapped integrity page to a bio



This is only theoretical at the moment given that the only
subsystems that generate integrity payloads are the block layer
itself and the scsi target (which generate well aligned integrity
payloads). But when we will expose integrity meta-data to user-space,
we'll need to refuse appending a page with a gap (if the queue
virtual boundary is set).

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

parent 7f39add3

block/bio-integrity.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -140,6 +140,11 @@ int bio_integrity_add_page(struct bio bio, struct page page,

		iv = bip->bip_vec + bip->bip_vcnt;

		if (bip->bip_vcnt &&
		bvec_gap_to_prev(bdev_get_queue(bio->bi_bdev),
		&bip->bip_vec[bip->bip_vcnt - 1], offset))
		return 0;

		iv->bv_page = page;
		iv->bv_len = len;
		iv->bv_offset = offset;