If ext4_group_add_blocks() is called with 0 block, it just return 0.
Signed-off-by: Yongqiang Yang <xiaoqiangnk@xxxxxxxxx>
---
fs/ext4/mballoc.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 33c41e6..a2af35b 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4680,6 +4680,9 @@ int ext4_group_add_blocks(handle_t *handle, struct super_block *sb,
ext4_debug("Adding block(s) %llu-%llu\n", block, block + count - 1);
+ if (count == 0)
+ return 0;
+
ext4_get_group_no_and_offset(sb, block, &block_group, &bit);
/*
* Check to see if we are freeing blocks across a group
--
1.7.5.1
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
