Make the checks in check_file_extent a bit more explicit. First we check
for unknown type and fail accordingly. Then we check for inline extent
and handle it in the newly introduced check_file_extent_inline. Finally
if none of the above checks triggered then we must have a regular or
prealloc extents.

Signed-off-by: Nikolay Borisov <nbori...@suse.com>
---
 check/mode-lowmem.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/check/mode-lowmem.c b/check/mode-lowmem.c
index 3a6fbb33c858..aa946a1307de 100644
--- a/check/mode-lowmem.c
+++ b/check/mode-lowmem.c
@@ -1915,21 +1915,23 @@ static int check_file_extent(struct btrfs_root *root, 
struct btrfs_path *path,
 
        btrfs_item_key_to_cpu(node, &fkey, slot);
        fi = btrfs_item_ptr(node, slot, struct btrfs_file_extent_item);
-
-       /* Check inline extent */
        extent_type = btrfs_file_extent_type(node, fi);
-       if (extent_type == BTRFS_FILE_EXTENT_INLINE)
-               return check_file_extent_inline(root, path, size, end);
 
        /* Check extent type */
        if (extent_type != BTRFS_FILE_EXTENT_REG &&
-                       extent_type != BTRFS_FILE_EXTENT_PREALLOC) {
+           extent_type != BTRFS_FILE_EXTENT_PREALLOC &&
+           extent_type != BTRFS_FILE_EXTENT_INLINE) {
                err |= FILE_EXTENT_ERROR;
                error("root %llu EXTENT_DATA[%llu %llu] type bad",
                      root->objectid, fkey.objectid, fkey.offset);
                return err;
        }
 
+       /* Check inline extent */
+       if (extent_type == BTRFS_FILE_EXTENT_INLINE)
+               return check_file_extent_inline(root, path, size, end);
+
+
        /* Check REG_EXTENT/PREALLOC_EXTENT */
        disk_bytenr = btrfs_file_extent_disk_bytenr(node, fi);
        disk_num_bytes = btrfs_file_extent_disk_num_bytes(node, fi);
-- 
2.17.1

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