linux-kernel - Re: [PATCH v7 0/5] make '%pD' print the full path of file

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Message-ID: <20210721141141.ehnnneafnwezqnk6@pathway.suse.cz>
Date:   Wed, 21 Jul 2021 16:11:41 +0200
From:   Petr Mladek <pmladek@...e.com>
To:     Jia He <justin.he@....com>,
        Alexander Viro <viro@...iv.linux.org.uk>
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Jonathan Corbet <corbet@....net>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Eric Biggers <ebiggers@...gle.com>,
        "Ahmed S. Darwish" <a.darwish@...utronix.de>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org,
        Matthew Wilcox <willy@...radead.org>,
        Christoph Hellwig <hch@...radead.org>, nd@....com
Subject: Re: [PATCH v7 0/5] make '%pD' print the full path of file

On Thu 2021-07-15 09:14:02, Jia He wrote:
> Background
> ==========
> Linus suggested printing the full path of file instead of printing
> the components as '%pd'.
> 
> Typically, there is no need for printk specifiers to take any real locks
> (ie mount_lock or rename_lock). So I introduce a new helper
> d_path_unsafe() which is similar to d_path() except it doesn't take any
> seqlock/spinlock.
> 
> TODO
> ====
> I plan to do the followup work after '%pD' behavior is changed.
> - s390/hmcdrv: remove the redundant directory path in printing string.
> - fs/iomap: simplify the iomap_swapfile_fail() with '%pD'.
> - simplify the string printing when file_path() is invoked(in some
>   cases, not all).
> - change the previous '%pD[2,3,4]' to '%pD'
>    
> Jia He (4):
>   d_path: fix Kernel doc validator complaints
>   d_path: introduce helper d_path_unsafe()
>   lib/vsprintf.c: make '%pD' print the full path of file
>   lib/test_printf.c: add test cases for '%pD'
> 
> Rasmus Villemoes (1):
>   lib/test_printf.c: split write-beyond-buffer check in two

The patchset is ready for linux-next from my POV.

I could take it via printk tree if Al provides Acks for the
first two "d_path: *: patches.

Or Al could take it via his tree if he would prefer to do so.

Best Regards,
Petr