FAILED: Patch "dm-integrity: fix a typo in the code for write/discard race" failed to apply to 5.15-stable tree

FAILED: Patch "dm-integrity: fix a typo in the code for write/discard race" failed to apply to 5.15-stable tree

[Sasha Levin]

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

From c698b7f417801fcd79f0dc844250b3361d38e6b8 Mon Sep 17 00:00:00 2001
From: Mikulas Patocka <mpatocka@redhat.com>
Date: Mon, 12 Jan 2026 21:15:27 +0100
Subject: [PATCH] dm-integrity: fix a typo in the code for write/discard race

If we send a write followed by a discard, it may be possible that the
discarded data end up being overwritten by the previous write from the
journal. The code tries to prevent that, but there was a typo in this
logic that made it not being activated as it should be.

Note that if we end up here the second time (when discard_retried is
true), it means that the write bio is actually racing with the discard
bio, and in this situation it is not specified which of them should win.

Cc: stable@vger.kernel.org
Fixes: 31843edab7cb ("dm integrity: improve discard in journal mode")
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
---
 drivers/md/dm-integrity.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index 170bf67a2edd9..79d60495454a5 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -2411,7 +2411,7 @@ static void dm_integrity_map_continue(struct dm_integrity_io *dio, bool from_map
 
 		new_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);
 		if (unlikely(new_pos != NOT_FOUND) ||
-		    unlikely(next_sector < dio->range.logical_sector - dio->range.n_sectors)) {
+		    unlikely(next_sector < dio->range.logical_sector + dio->range.n_sectors)) {
 			remove_range_unlocked(ic, &dio->range);
 			spin_unlock_irq(&ic->endio_wait.lock);
 			queue_work(ic->commit_wq, &ic->commit_work);
-- 
2.51.0