btrfs: Output ENOSPC debug info in inc_block_group_ro (3ece54e5) · Commits · 戴 / test

fs/btrfs/extent-tree.c

+13 −2

Original line number	Diff line number	Diff line
		@@ -9605,6 +9605,7 @@ static int inc_block_group_ro(struct btrfs_block_group_cache *cache, int force)
		{
		struct btrfs_space_info *sinfo = cache->space_info;
		u64 num_bytes;
		u64 sinfo_used;
		u64 min_allocable_bytes;
		int ret = -ENOSPC;

		@@ -9631,9 +9632,10 @@ static int inc_block_group_ro(struct btrfs_block_group_cache *cache, int force)

		num_bytes = cache->key.offset - cache->reserved - cache->pinned -
		cache->bytes_super - btrfs_block_group_used(&cache->item);
		sinfo_used = btrfs_space_info_used(sinfo, true);

		if (btrfs_space_info_used(sinfo, true) + num_bytes +
		min_allocable_bytes <= sinfo->total_bytes) {
		if (sinfo_used + num_bytes + min_allocable_bytes <=
		sinfo->total_bytes) {
		sinfo->bytes_readonly += num_bytes;
		cache->ro++;
		list_add_tail(&cache->ro_list, &sinfo->ro_bgs);
		@@ -9642,6 +9644,15 @@ static int inc_block_group_ro(struct btrfs_block_group_cache *cache, int force)
		out:
		spin_unlock(&cache->lock);
		spin_unlock(&sinfo->lock);
		if (ret == -ENOSPC && btrfs_test_opt(cache->fs_info, ENOSPC_DEBUG)) {
		btrfs_info(cache->fs_info,
		"unable to make block group %llu ro",
		cache->key.objectid);
		btrfs_info(cache->fs_info,
		"sinfo_used=%llu bg_num_bytes=%llu min_allocable=%llu",
		sinfo_used, num_bytes, min_allocable_bytes);
		dump_space_info(cache->fs_info, cache->space_info, 0, 0);
		}
		return ret;
		}