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authorFilipe Manana <fdmanana@suse.com>2023-07-26 16:56:58 +0100
committerDavid Sterba <dsterba@suse.com>2023-08-21 14:52:17 +0200
commit19288951ffa8c67c9f40d2eed72ebc53071227c0 (patch)
treee93034b4470ed449ed8947f9a52e4291fd7ea7ac
parent4490e803e1fe9fab8db5025e44e23b55df54078b (diff)
btrfs: update comment for btrfs_join_transaction_nostart()
Update the comment for btrfs_join_transaction_nostart() to be more clear about how it works and how it's different from btrfs_attach_transaction(). Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
-rw-r--r--fs/btrfs/transaction.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 6a2a12593183..ab09542f2170 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -799,7 +799,10 @@ struct btrfs_trans_handle *btrfs_join_transaction_spacecache(struct btrfs_root *
/*
* Similar to regular join but it never starts a transaction when none is
- * running or after waiting for the current one to finish.
+ * running or when there's a running one at a state >= TRANS_STATE_UNBLOCKED.
+ * This is similar to btrfs_attach_transaction() but it allows the join to
+ * happen if the transaction commit already started but it's not yet in the
+ * "doing" phase (the state is < TRANS_STATE_COMMIT_DOING).
*/
struct btrfs_trans_handle *btrfs_join_transaction_nostart(struct btrfs_root *root)
{