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

[Josef Bacik]

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

Signed-off-by: Josef Bacik <jo...@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

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