Re: [PATCH v2 1/2] hugetlbfs: support tracepoint

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On Thu, Jul 04, 2024 at 11:07:03AM +0800, Hongbo Li wrote:
> +	TP_printk("dev = (%d,%d), ino = %lu, dir = %lu, mode = 0%o",
> +		MAJOR(__entry->dev), MINOR(__entry->dev),
> +		(unsigned long) __entry->ino,
> +		(unsigned long) __entry->dir, __entry->mode)

erofs and f2fs are the only two places that print devices like this.

	"dev=%d:%d inode=%lx"

Why do we need dir and mode?

Actually, why do we need a tracepoint on alloc_inode at all?  What
does it help us debug, and why does no other filesystem need an
alloc_inode tracepoint?




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