1 files changed, 7 insertions, 3 deletions

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index f554703eb924..f7529e27d791 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -1910,9 +1910,13 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode,
                         BUG_ON(b != ex_ee_block + ex_ee_len - 1);
                 }
 
-                /* at present, extent can't cross block group: */
-                /* leaf + bitmap + group desc + sb + inode */
-                credits = 5;
+                /*
+                 * 3 for leaf, sb, and inode plus 2 (bmap and group
+                 * descriptor) for each block group; assume two block
+                 * groups plus ex_ee_len/blocks_per_block_group for
+                 * the worst case
+                 */
+                credits = 7 + 2*(ex_ee_len/EXT4_BLOCKS_PER_GROUP(inode->i_sb));
                 if (ex == EXT_FIRST_EXTENT(eh)) {
                         correct_index = 1;
                         credits += (ext_depth(inode)) + 1;