linux-kernel - [PATCH 03/13] ext4: Remove unused extern variables declaration

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Message-Id: <1784dcc5422f1f37068704be565b8e16f4d51f19.1685009579.git.ojaswin@linux.ibm.com>
Date:   Thu, 25 May 2023 17:02:57 +0530
From:   Ojaswin Mujoo <ojaswin@...ux.ibm.com>
To:     linux-ext4@...r.kernel.org, "Theodore Ts'o" <tytso@....edu>
Cc:     Ritesh Harjani <riteshh@...ux.ibm.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jan Kara <jack@...e.cz>,
        Kemeng Shi <shikemeng@...weicloud.com>,
        "Ritesh Harjani (IBM)" <ritesh.list@...il.com>
Subject: [PATCH 03/13] ext4: Remove unused extern variables declaration

From: "Ritesh Harjani (IBM)" <ritesh.list@...il.com>

ext4_mb_stats & ext4_mb_max_to_scan are never used. We use
sbi->s_mb_stats and sbi->s_mb_max_to_scan instead.
Hence kill these extern declarations.

Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@...il.com>
Signed-off-by: Ojaswin Mujoo <ojaswin@...ux.ibm.com>
Reviewed-by: Jan Kara <jack@...e.cz>
---
 fs/ext4/ext4.h    | 2 --
 fs/ext4/mballoc.h | 2 +-
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 7e8f66ba17f4..80e01fbcd0a3 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2815,8 +2815,6 @@ int ext4_fc_record_regions(struct super_block *sb, int ino,
 /* mballoc.c */
 extern const struct seq_operations ext4_mb_seq_groups_ops;
 extern const struct seq_operations ext4_mb_seq_structs_summary_ops;
-extern long ext4_mb_stats;
-extern long ext4_mb_max_to_scan;
 extern int ext4_seq_mb_stats_show(struct seq_file *seq, void *offset);
 extern int ext4_mb_init(struct super_block *);
 extern int ext4_mb_release(struct super_block *);
diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h
index 6d85ee8674a6..24b666e558f1 100644
--- a/fs/ext4/mballoc.h
+++ b/fs/ext4/mballoc.h
@@ -49,7 +49,7 @@
 #define MB_DEFAULT_MIN_TO_SCAN		10
 
 /*
- * with 'ext4_mb_stats' allocator will collect stats that will be
+ * with 's_mb_stats' allocator will collect stats that will be
  * shown at umount. The collecting costs though!
  */
 #define MB_DEFAULT_STATS		0
-- 
2.31.1