linux-kernel - [PATCH v3 10/10] ext4: correct some stale comment of criteria

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Message-Id: <20230801143204.2284343-11-shikemeng@huaweicloud.com>
Date:   Tue,  1 Aug 2023 22:32:04 +0800
From:   Kemeng Shi <shikemeng@...weicloud.com>
To:     tytso@....edu, adilger.kernel@...ger.ca, ritesh.list@...il.com,
        ojaswin@...ux.ibm.com, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     shikemeng@...weicloud.com
Subject: [PATCH v3 10/10] 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@...weicloud.com>
---
 fs/ext4/mballoc.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index bfaab173a3f4..1e8ce0ece47a 100644
--- 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 @@ ext4_mb_regular_allocator(struct ext4_allocation_context *ac)
 			/*
 			 * 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) ||
-- 
2.30.0