On 19.07.2018 17:49, Josef Bacik wrote:
> 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);
Why do you cast to unsigned long long given that size/reserved are
already defined as u64? Also use pr_err rather than printk.
> + 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;
>
>
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