[PATCH 08/22] btrfs: dump block_rsv whe dumping space info

[Josef Bacik <josef@toxicpanda.com>]

For enospc_debug having the block rsvs is super helpful to see if we've
done something wrong.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
---
 fs/btrfs/extent-tree.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 6de9a180abdd..35c1c1b7ba1d 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -8050,6 +8050,15 @@ static noinline int find_free_extent(struct btrfs_fs_info *fs_info,
 	return ret;
 }
 
+static void dump_block_rsv(struct btrfs_block_rsv *rsv)
+{
+	spin_lock(&rsv->lock);
+	printk(KERN_ERR "%d: size %llu reserved %llu\n",
+	       rsv->type, (unsigned long long)rsv->size,
+	       (unsigned long long)rsv->reserved);
+	spin_unlock(&rsv->lock);
+}
+
 static void dump_space_info(struct btrfs_fs_info *fs_info,
 			    struct btrfs_space_info *info, u64 bytes,
 			    int dump_block_groups)
@@ -8069,6 +8078,12 @@ static void dump_space_info(struct btrfs_fs_info *fs_info,
 		info->bytes_readonly);
 	spin_unlock(&info->lock);
 
+	dump_block_rsv(&fs_info->global_block_rsv);
+	dump_block_rsv(&fs_info->trans_block_rsv);
+	dump_block_rsv(&fs_info->chunk_block_rsv);
+	dump_block_rsv(&fs_info->delayed_block_rsv);
+	dump_block_rsv(&fs_info->delayed_refs_rsv);
+
 	if (!dump_block_groups)
 		return;
 
-- 
2.14.3