diff options
| -rw-r--r-- | fs/btrfs/space-info.c | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c index 980b6f641e78..abd2b8fb1833 100644 --- a/fs/btrfs/space-info.c +++ b/fs/btrfs/space-info.c @@ -579,21 +579,33 @@ static void shrink_delalloc(struct btrfs_fs_info *fs_info, * will return -ENOSPC. */ static int may_commit_transaction(struct btrfs_fs_info *fs_info, - struct btrfs_space_info *space_info) + struct btrfs_space_info *space_info, + u64 bytes_needed) { struct reserve_ticket *ticket = NULL; struct btrfs_block_rsv *delayed_rsv = &fs_info->delayed_block_rsv; struct btrfs_block_rsv *delayed_refs_rsv = &fs_info->delayed_refs_rsv; struct btrfs_block_rsv *trans_rsv = &fs_info->trans_block_rsv; struct btrfs_trans_handle *trans; - u64 bytes_needed; u64 reclaim_bytes = 0; u64 cur_free_bytes = 0; + bool do_commit = false; trans = (struct btrfs_trans_handle *)current->journal_info; if (trans) return -EAGAIN; + /* + * If we are data and have passed in U64_MAX we just want to + * unconditionally commit the transaction to match the previous data + * flushing behavior. + */ + if ((space_info->flags & BTRFS_BLOCK_GROUP_DATA) && + bytes_needed == U64_MAX) { + do_commit = true; + goto check_pinned; + } + spin_lock(&space_info->lock); cur_free_bytes = btrfs_space_info_used(space_info, true); if (cur_free_bytes < space_info->total_bytes) @@ -607,7 +619,8 @@ static int may_commit_transaction(struct btrfs_fs_info *fs_info, else if (!list_empty(&space_info->tickets)) ticket = list_first_entry(&space_info->tickets, struct reserve_ticket, list); - bytes_needed = (ticket) ? ticket->bytes : 0; + if (ticket) + bytes_needed = ticket->bytes; if (bytes_needed > cur_free_bytes) bytes_needed -= cur_free_bytes; @@ -618,6 +631,7 @@ static int may_commit_transaction(struct btrfs_fs_info *fs_info, if (!bytes_needed) return 0; +check_pinned: trans = btrfs_join_transaction(fs_info->extent_root); if (IS_ERR(trans)) return PTR_ERR(trans); @@ -627,15 +641,18 @@ static int may_commit_transaction(struct btrfs_fs_info *fs_info, * we have block groups that are going to be freed, allowing us to * possibly do a chunk allocation the next loop through. */ - if (test_bit(BTRFS_TRANS_HAVE_FREE_BGS, &trans->transaction->flags) || + if (do_commit || + test_bit(BTRFS_TRANS_HAVE_FREE_BGS, &trans->transaction->flags) || __percpu_counter_compare(&space_info->total_bytes_pinned, bytes_needed, BTRFS_TOTAL_BYTES_PINNED_BATCH) >= 0) goto commit; /* - * See if there is some space in the delayed insertion reservation for - * this reservation. + * See if there is some space in the delayed insertion reserve for this + * reservation. If the space_info's don't match (like for DATA or + * SYSTEM) then just go enospc, reclaiming this space won't recover any + * space to satisfy those reservations. */ if (space_info != delayed_rsv->space_info) goto enospc; @@ -742,7 +759,7 @@ static void flush_space(struct btrfs_fs_info *fs_info, btrfs_wait_on_delayed_iputs(fs_info); break; case COMMIT_TRANS: - ret = may_commit_transaction(fs_info, space_info); + ret = may_commit_transaction(fs_info, space_info, num_bytes); break; default: ret = -ENOSPC; |