4 files changed, 27 insertions, 12 deletions

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index cce6087d6880..e55843f536bc 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -4542,8 +4542,11 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 			offset_in_extent = em_start - em->start;
 		em_end = extent_map_end(em);
 		em_len = em_end - em_start;
-		disko = em->block_start + offset_in_extent;
 		flags = 0;
+		if (em->block_start < EXTENT_MAP_LAST_BYTE)
+			disko = em->block_start + offset_in_extent;
+		else
+			disko = 0;
 
 		/*
 		 * bump off for our next call to get_extent
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index e9482f0db9d0..eba61bcb9bb3 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -9005,13 +9005,14 @@ again:
 
 	unlock_extent_cached(io_tree, page_start, page_end, &cached_state);
 
-out_unlock:
 	if (!ret2) {
 		btrfs_delalloc_release_extents(BTRFS_I(inode), PAGE_SIZE, true);
 		sb_end_pagefault(inode->i_sb);
 		extent_changeset_free(data_reserved);
 		return VM_FAULT_LOCKED;
 	}
+
+out_unlock:
 	unlock_page(page);
 out:
 	btrfs_delalloc_release_extents(BTRFS_I(inode), PAGE_SIZE, (ret != 0));
@@ -9443,6 +9444,7 @@ static int btrfs_rename_exchange(struct inode *old_dir,
 	u64 new_idx = 0;
 	u64 root_objectid;
 	int ret;
+	int ret2;
 	bool root_log_pinned = false;
 	bool dest_log_pinned = false;
 
@@ -9639,7 +9641,8 @@ out_fail:
 			dest_log_pinned = false;
 		}
 	}
-	ret = btrfs_end_transaction(trans);
+	ret2 = btrfs_end_transaction(trans);
+	ret = ret ? ret : ret2;
 out_notrans:
 	if (new_ino == BTRFS_FIRST_FREE_OBJECTID)
 		up_read(&fs_info->subvol_sem);
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index c2837a32d689..43ecbe620dea 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -3577,7 +3577,7 @@ static int btrfs_extent_same(struct inode *src, u64 loff, u64 olen,
 		ret = btrfs_extent_same_range(src, loff, BTRFS_MAX_DEDUPE_LEN,
 					      dst, dst_loff, &cmp);
 		if (ret)
-			goto out_unlock;
+			goto out_free;
 
 		loff += BTRFS_MAX_DEDUPE_LEN;
 		dst_loff += BTRFS_MAX_DEDUPE_LEN;
@@ -3587,16 +3587,16 @@ static int btrfs_extent_same(struct inode *src, u64 loff, u64 olen,
 		ret = btrfs_extent_same_range(src, loff, tail_len, dst,
 					      dst_loff, &cmp);
 
+out_free:
+	kvfree(cmp.src_pages);
+	kvfree(cmp.dst_pages);
+
 out_unlock:
 	if (same_inode)
 		inode_unlock(src);
 	else
 		btrfs_double_inode_unlock(src, dst);
 
-out_free:
-	kvfree(cmp.src_pages);
-	kvfree(cmp.dst_pages);
-
 	return ret;
 }
 
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 1874a6d2e6f5..c25dc47210a3 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -2680,8 +2680,10 @@ out:
 		free_extent_buffer(scratch_leaf);
 	}
 
-	if (done && !ret)
+	if (done && !ret) {
 		ret = 1;
+		fs_info->qgroup_rescan_progress.objectid = (u64)-1;
+	}
 	return ret;
 }
 
@@ -2784,13 +2786,20 @@ qgroup_rescan_init(struct btrfs_fs_info *fs_info, u64 progress_objectid,
 
 	if (!init_flags) {
 		/* we're resuming qgroup rescan at mount time */
-		if (!(fs_info->qgroup_flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN))
+		if (!(fs_info->qgroup_flags &
+		      BTRFS_QGROUP_STATUS_FLAG_RESCAN)) {
 			btrfs_warn(fs_info,
 			"qgroup rescan init failed, qgroup is not enabled");
-		else if (!(fs_info->qgroup_flags & BTRFS_QGROUP_STATUS_FLAG_ON))
+			ret = -EINVAL;
+		} else if (!(fs_info->qgroup_flags &
+			     BTRFS_QGROUP_STATUS_FLAG_ON)) {
 			btrfs_warn(fs_info,
 			"qgroup rescan init failed, qgroup rescan is not queued");
-		return -EINVAL;
+			ret = -EINVAL;
+		}
+
+		if (ret)
+			return ret;
 	}
 
 	mutex_lock(&fs_info->qgroup_rescan_lock);