[PATCH v2 3/5] erofs-utils: lib: preserve primarydevice_blocks if already larger

[Lucas Karpinski]

Change erofs_importer_flush_all() to use max(). This allows callers to
pre-allocate space for data beyond the metadata region.

Signed-off-by: Lucas Karpinski <lkarpinski at nvidia.com>
---
 lib/importer.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/importer.c b/lib/importer.c
index 26c86a0..56c8ea8 100644
--- a/lib/importer.c
+++ b/lib/importer.c
@@ -126,8 +126,9 @@ int erofs_importer_flush_all(struct erofs_importer *im)
 
 	fsalignblks = im->params->fsalignblks ?
 		roundup_pow_of_two(im->params->fsalignblks) : 1;
-	sbi->primarydevice_blocks = roundup(erofs_mapbh(sbi->bmgr, NULL),
-					    fsalignblks);
+	sbi->primarydevice_blocks = max_t(erofs_blk_t, sbi->primarydevice_blocks,
+					  roundup(erofs_mapbh(sbi->bmgr, NULL),
+						  fsalignblks));
 	err = erofs_write_device_table(sbi);
 	if (err)
 		return err;

-- 
Git-155)