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-rw-r--r--fs/btrfs/discard.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/btrfs/discard.c b/fs/btrfs/discard.c
index 99663641abf4..62298a438fa5 100644
--- a/fs/btrfs/discard.c
+++ b/fs/btrfs/discard.c
@@ -356,6 +356,7 @@ void btrfs_discard_update_discardable(struct btrfs_block_group *block_group,
{
struct btrfs_discard_ctl *discard_ctl;
s32 extents_delta;
+ s64 bytes_delta;
if (!block_group || !btrfs_test_opt(block_group->fs_info, DISCARD_ASYNC))
return;
@@ -369,6 +370,14 @@ void btrfs_discard_update_discardable(struct btrfs_block_group *block_group,
ctl->discardable_extents[BTRFS_STAT_PREV] =
ctl->discardable_extents[BTRFS_STAT_CURR];
}
+
+ bytes_delta = ctl->discardable_bytes[BTRFS_STAT_CURR] -
+ ctl->discardable_bytes[BTRFS_STAT_PREV];
+ if (bytes_delta) {
+ atomic64_add(bytes_delta, &discard_ctl->discardable_bytes);
+ ctl->discardable_bytes[BTRFS_STAT_PREV] =
+ ctl->discardable_bytes[BTRFS_STAT_CURR];
+ }
}
/**
@@ -454,6 +463,7 @@ void btrfs_discard_init(struct btrfs_fs_info *fs_info)
INIT_LIST_HEAD(&discard_ctl->discard_list[i]);
atomic_set(&discard_ctl->discardable_extents, 0);
+ atomic64_set(&discard_ctl->discardable_bytes, 0);
}
void btrfs_discard_cleanup(struct btrfs_fs_info *fs_info)