We do this check when we start the async reclaimer thread, might as well check
before we kick it off to save us some cycles.  Thanks,

Signed-off-by: Josef Bacik <jba...@fb.com>
---
 fs/btrfs/extent-tree.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 273e18d..4b5a517 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4871,6 +4871,9 @@ static inline int need_do_async_reclaim(struct 
btrfs_space_info *space_info,
        if ((space_info->bytes_used + space_info->bytes_reserved) >= thresh)
                return 0;
 
+       if (!btrfs_calc_reclaim_metadata_size(fs_info->fs_root, space_info))
+               return 0;
+
        return (used >= thresh && !btrfs_fs_closing(fs_info) &&
                !test_bit(BTRFS_FS_STATE_REMOUNTING, &fs_info->fs_state));
 }
-- 
2.5.0

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