[PATCH v6 v6 1/3] ext4: add blocks_allocated to mb_stats output
From: Baolin Liu <hidden>
Date: 2026-05-24 01:55:20
Also in:
lkml
Subsystem:
ext4 file system, filesystems (vfs and infrastructure), the rest · Maintainers:
"Theodore Ts'o", Alexander Viro, Christian Brauner, Linus Torvalds
From: Baolin Liu <redacted> Add blocks_allocated to /proc/fs/ext4/<dev>/mb_stats so that the reported statistics match the mballoc summary printed at unmount time. Reviewed-by: Ojaswin Mujoo <ojaswin@linux.ibm.com> Reviewed-by: Andreas Dilger <redacted> Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Reviewed-by: Zhang Yi <yi.zhang@huawei.com> Signed-off-by: Baolin Liu <redacted> --- fs/ext4/mballoc.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index bb58eafb87bc..d36b0f7b5d7d 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c@@ -3217,6 +3217,8 @@ int ext4_seq_mb_stats_show(struct seq_file *seq, void *offset) "\tTo enable, please write \"1\" to sysfs file mb_stats.\n"); return 0; } + seq_printf(seq, "\tblocks_allocated: %u\n", + atomic_read(&sbi->s_bal_allocated)); seq_printf(seq, "\treqs: %u\n", atomic_read(&sbi->s_bal_reqs)); seq_printf(seq, "\tsuccess: %u\n", atomic_read(&sbi->s_bal_success));
--
2.51.0