1 files changed, 8 insertions, 3 deletions

diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
index db1906b4e39c..153242187fce 100644
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -2127,10 +2127,15 @@ int ext3_trim_fs(struct super_block *sb, struct fstrim_range *range)
                 if (free_blocks < minlen)
                         continue;
 
-                if (len >= EXT3_BLOCKS_PER_GROUP(sb))
-                        len -= (EXT3_BLOCKS_PER_GROUP(sb) - first_block);
-                else
+                /*
+                 * For all the groups except the last one, last block will
+                 * always be EXT3_BLOCKS_PER_GROUP(sb), so we only need to
+                 * change it for the last group in which case first_block +
+                 * len < EXT3_BLOCKS_PER_GROUP(sb).
+                 */
+                if (first_block + len < EXT3_BLOCKS_PER_GROUP(sb))
                         last_block = first_block + len;
+                len -= last_block - first_block;
 
                 ret = ext3_trim_all_free(sb, group, first_block,
                                         last_block, minlen);