Merge tag 'v6.15-rc7' into x86/core, to pick up fixes

Pick up build fixes from upstream to make this tree more testable.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 15 insertions, 2 deletions

diff --git a/fs/btrfs/discard.c b/fs/btrfs/discard.c
index d6eef4bd9e9d..de23c4b3515e 100644
--- a/fs/btrfs/discard.c
+++ b/fs/btrfs/discard.c
@@ -94,8 +94,6 @@ static void __add_to_discard_list(struct btrfs_discard_ctl *discard_ctl,
 				  struct btrfs_block_group *block_group)
 {
 	lockdep_assert_held(&discard_ctl->lock);
-	if (!btrfs_run_discard_work(discard_ctl))
-		return;
 
 	if (list_empty(&block_group->discard_list) ||
 	    block_group->discard_index == BTRFS_DISCARD_INDEX_UNUSED) {
@@ -118,6 +116,9 @@ static void add_to_discard_list(struct btrfs_discard_ctl *discard_ctl,
 	if (!btrfs_is_block_group_data_only(block_group))
 		return;
 
+	if (!btrfs_run_discard_work(discard_ctl))
+		return;
+
 	spin_lock(&discard_ctl->lock);
 	__add_to_discard_list(discard_ctl, block_group);
 	spin_unlock(&discard_ctl->lock);
@@ -244,6 +245,18 @@ again:
 		    block_group->used != 0) {
 			if (btrfs_is_block_group_data_only(block_group)) {
 				__add_to_discard_list(discard_ctl, block_group);
+				/*
+				 * The block group must have been moved to other
+				 * discard list even if discard was disabled in
+				 * the meantime or a transaction abort happened,
+				 * otherwise we can end up in an infinite loop,
+				 * always jumping into the 'again' label and
+				 * keep getting this block group over and over
+				 * in case there are no other block groups in
+				 * the discard lists.
+				 */
+				ASSERT(block_group->discard_index !=
+				       BTRFS_DISCARD_INDEX_UNUSED);
 			} else {
 				list_del_init(&block_group->discard_list);
 				btrfs_put_block_group(block_group);