From: Christoph Hellwig <hch@lst.de>
Date: Mon, 3 Jun 2024 08:28:35 +0000 (+0200)
Subject: block: don't require stable pages for non-PI metadata
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=23854ce86d6c48d3ab36f660b56cf69f03d3df9b;p=users%2Fhch%2Fblock.git

block: don't require stable pages for non-PI metadata

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

Signed-off-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index bb3cd1e0eeb5..a6188c80c921 100644
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -377,7 +377,8 @@ 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) {
@@ -402,7 +403,8 @@ 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);