ext4: Fix for ext4_mb_collect_stats()

Fix ext4_mb_collect_stats() to use the correct test for s_bal_success; it
should be testing "best-extent.fe_len >= orig-extent.fe_len" , not
"orig-extent.fe_len >= goal-extent.fe_len" .

Signed-off-by: Curt Wohlgemuth <curtw@google.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index aa499fe11687bb7b480676b2e2c30c7ea7c9f32d..e5dcdc9bd56b45b5a49912d7805f547458e85133 100644 (file)
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3029,7 +3029,7 @@ static void ext4_mb_collect_stats(struct ext4_allocation_context *ac)
        if (sbi->s_mb_stats && ac->ac_g_ex.fe_len > 1) {
                atomic_inc(&sbi->s_bal_reqs);
                atomic_add(ac->ac_b_ex.fe_len, &sbi->s_bal_allocated);
-               if (ac->ac_o_ex.fe_len >= ac->ac_g_ex.fe_len)
+               if (ac->ac_b_ex.fe_len >= ac->ac_o_ex.fe_len)
                        atomic_inc(&sbi->s_bal_success);
                atomic_add(ac->ac_found, &sbi->s_bal_ex_scanned);
                if (ac->ac_g_ex.fe_start == ac->ac_b_ex.fe_start &&