ext4: correct some stale comment of criteria

We named criteria with CR_XXX, correct stale comment to criteria with
raw number.

Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20230801143204.2284343-11-shikemeng@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index f9189f7..b89b5f0 100644 (file)
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2782,8 +2782,8 @@ ext4_mb_regular_allocator(struct ext4_allocation_context *ac)
 
        /*
         * ac->ac_2order is set only if the fe_len is a power of 2
-        * if ac->ac_2order is set we also set criteria to 0 so that we
-        * try exact allocation using buddy.
+        * if ac->ac_2order is set we also set criteria to CR_POWER2_ALIGNED
+        * so that we try exact allocation using buddy.
         */
        i = fls(ac->ac_g_ex.fe_len);
        ac->ac_2order = 0;
@@ -2840,8 +2840,8 @@ repeat:
                        /*
                         * Batch reads of the block allocation bitmaps
                         * to get multiple READs in flight; limit
-                        * prefetching at cr=0/1, otherwise mballoc can
-                        * spend a lot of time loading imperfect groups
+                        * prefetching at inexpensive CR, otherwise mballoc
+                        * can spend a lot of time loading imperfect groups
                         */
                        if ((prefetch_grp == group) &&
                            (ext4_mb_cr_expensive(cr) ||