After inserting an new index, current number of indexes should
be greater than original number by 1. So if the new index is
less or equal than LAST_INDEX + 1, then indexes are continugous.
If new index will be placed on the end, then ix will equals
LAST_INDEX + 1. Index entries has been verifiyed in pervious code
in ext4_ext_insert_index.
Signed-off-by: Yongqiang Yang <xiaoqiangnk@xxxxxxxxx>
---
fs/ext4/extents.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 2dff31e..322398e 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -779,7 +779,7 @@ static int ext4_ext_insert_index(handle_t *handle, struct inode *inode,
ix = curp->p_idx;
}
- if (unlikely(ix > EXT_LAST_INDEX(curp->p_hdr))) {
+ if (unlikely(ix > EXT_LAST_INDEX(curp->p_hdr) + 1)) {
EXT4_ERROR_INODE(inode, "ix > EXT_LAST_INDEX!");
return -EIO;
}
--
1.7.5.1
--
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