diff options
| -rw-r--r-- | fs/btrfs/scrub.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 2907a77fb1f6..6b3fd51d9a99 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -3483,6 +3483,7 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx, u64 length; u64 chunk_offset; int ret = 0; + int ro_set; int slot; struct extent_buffer *l; struct btrfs_key key; @@ -3568,7 +3569,21 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx, scrub_pause_on(fs_info); ret = btrfs_inc_block_group_ro(root, cache); scrub_pause_off(fs_info); - if (ret) { + + if (ret == 0) { + ro_set = 1; + } else if (ret == -ENOSPC) { + /* + * btrfs_inc_block_group_ro return -ENOSPC when it + * failed in creating new chunk for metadata. + * It is not a problem for scrub/replace, because + * metadata are always cowed, and our scrub paused + * commit_transactions. + */ + ro_set = 0; + } else { + btrfs_warn(fs_info, "failed setting block group ro, ret=%d\n", + ret); btrfs_put_block_group(cache); break; } @@ -3611,7 +3626,8 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx, scrub_pause_off(fs_info); - btrfs_dec_block_group_ro(root, cache); + if (ro_set) + btrfs_dec_block_group_ro(root, cache); btrfs_put_block_group(cache); if (ret) |
