ext4: split ext4_journal_start trace for debug
we might want to know why jbd2 thread using high io for detail,
split ext4_journal_start trace to ext4_journal_start_sb and
ext4_journal_start_inode, show ino and handle type when possible.
Signed-off-by: changfengnan <changfengnan@bytedance.com>
Link: https://lore.kernel.org/r/20221008120518.74870-1-changfengnan@bytedance.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c
index 8e1fb18..77f318e 100644
--- a/fs/ext4/ext4_jbd2.c
+++ b/fs/ext4/ext4_jbd2.c
@@ -86,15 +86,21 @@ static int ext4_journal_check_start(struct super_block *sb)
return 0;
}
-handle_t *__ext4_journal_start_sb(struct super_block *sb, unsigned int line,
+handle_t *__ext4_journal_start_sb(struct inode *inode,
+ struct super_block *sb, unsigned int line,
int type, int blocks, int rsv_blocks,
int revoke_creds)
{
journal_t *journal;
int err;
-
- trace_ext4_journal_start(sb, blocks, rsv_blocks, revoke_creds,
- _RET_IP_);
+ if (inode)
+ trace_ext4_journal_start_inode(inode, blocks, rsv_blocks,
+ revoke_creds, type,
+ _RET_IP_);
+ else
+ trace_ext4_journal_start_sb(sb, blocks, rsv_blocks,
+ revoke_creds, type,
+ _RET_IP_);
err = ext4_journal_check_start(sb);
if (err < 0)
return ERR_PTR(err);
