Commit 939659df authored by Wang Xiaoguang's avatar Wang Xiaoguang Committed by David Sterba

btrfs: add necessary comments about tickets_id

Tickets_id's name may result in some misunderstandings,  it just indicates
the next ticket will be handled and is not stored per ticket.

Fixes: ce129655 ("btrfs: introduce tickets_id to determine whether
asynchronous metadata reclaim work makes progress")
Signed-off-by: default avatarWang Xiaoguang <wangxg.fnst@cn.fujitsu.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent dc1a90c6
......@@ -426,6 +426,10 @@ struct btrfs_space_info {
struct list_head ro_bgs;
struct list_head priority_tickets;
struct list_head tickets;
/*
* tickets_id just indicates the next ticket will be handled, so note
* it's not stored per ticket.
*/
u64 tickets_id;
struct rw_semaphore groups_sem;
......
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