As the member fe_len defined in struct ext4_free_extent is expressed as
number of clusters, the variable "size" computation is wrong, we need to
first translate fe_len to block number, then to bytes.
Signed-off-by: Xiaoguang Wang <wangxg.fnst@xxxxxxxxxxxxxx>
---
fs/ext4/mballoc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 7f72f50..975a35e 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3076,7 +3076,8 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac,
size = 8 * 1024 * 1024;
} else {
start_off = (loff_t)ac->ac_o_ex.fe_logical << bsbits;
- size = ac->ac_o_ex.fe_len << bsbits;
+ size = (loff_t)EXT4_C2B(EXT4_SB(ac->ac_sb),
+ ac->ac_o_ex.fe_len) << bsbits;
}
size = size >> bsbits;
start = start_off >> bsbits;
--
1.8.2.1
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