[PATCH 09/12] block: don't require stable pages for non-PI metadata

Christoph Hellwig
2024-06-13T08:49:13Z

Non-PI metadata doesn't contain checksums and thus doesn't require
stable pages.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
---
block/blk-integrity.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index 58760a6d6b2209..1d2d371cd632d3 100644
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -379,7 +379,8 @@ void blk_integrity_register(struct gendisk *disk, struct blk_integrity *template
bi->tag_size = template->tag_size;
bi->pi_offset = template->pi_offset;

- blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, disk->queue);
+ if (bi->csum_type != BLK_INTEGRITY_CSUM_NONE)
+ blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, disk->queue);

#ifdef CONFIG_BLK_INLINE_ENCRYPTION
if (disk->queue->crypto_profile) {
@@ -404,7 +405,8 @@ void blk_integrity_unregister(struct gendisk *disk)
if (!bi->tuple_size)
return;

- blk_queue_flag_clear(QUEUE_FLAG_STABLE_WRITES, disk->queue);
+ if (bi->csum_type != BLK_INTEGRITY_CSUM_NONE)
+ blk_queue_flag_clear(QUEUE_FLAG_STABLE_WRITES, disk->queue);
memset(bi, 0, sizeof(*bi));
}
EXPORT_SYMBOL(blk_integrity_unregister);
--
2.43.0