From 9ddf648f9c2a492cef4e41e31c50515a817d0562 Mon Sep 17 00:00:00 2001 From: Dennis Zhou Date: Thu, 2 Jan 2020 16:26:41 -0500 Subject: btrfs: keep track of discard reuse stats Keep track of how much we are discarding and how often we are reusing with async discard. The discard_*_bytes values don't need any special protection because the work item provides the single threaded access. Reviewed-by: Josef Bacik Signed-off-by: Dennis Zhou Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/ctree.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs/btrfs/ctree.h') diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 486b9d1532eb..569931dd0ce5 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -473,6 +473,9 @@ struct btrfs_discard_ctl { unsigned long delay; u32 iops_limit; u32 kbps_limit; + u64 discard_extent_bytes; + u64 discard_bitmap_bytes; + atomic64_t discard_bytes_saved; }; /* delayed seq elem */ -- cgit v1.2.3-59-g8ed1b