From: Baokun Li <libaokun1@xxxxxxxxxx>
After commit 21175ca434c5 ("ext4: make prefetch_block_bitmaps default"),
we enable 'prefetch_block_bitmaps' by default, but this is not shown in
the '/proc/fs/ext4/sdx/options' procfs interface.
This makes it impossible to distinguish whether the feature is enabled by
default or not, so 'prefetch_block_bitmaps' is shown in the 'options'
procfs interface when prefetch_block_bitmaps is enabled by default.
This makes it easy to notice changes to the default mount options between
versions through the '/proc/fs/ext4/sdx/options' procfs interface.
Signed-off-by: Baokun Li <libaokun1@xxxxxxxxxx>
---
fs/ext4/super.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index b77acba4a719..c88a47639e9c 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3030,6 +3030,9 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb,
SEQ_OPTS_PUTS("mb_optimize_scan=1");
}
+ if (!test_opt(sb, NO_PREFETCH_BLOCK_BITMAPS))
+ SEQ_OPTS_PUTS("prefetch_block_bitmaps");
+
ext4_show_quota_options(seq, sb);
return 0;
}
--
2.31.1
