Re: git grep failure?

From: Jeff King <peff@peff.net>
Date: Mar 19, 2026, 00:38 UTC
Message-ID: <20260319003829.GA3530301@coredump.intra.peff.net>
In-Reply-To: <7bbcda60-dad4-41d4-b994-c19f83f37e2f@infradead.org>

On Wed, Mar 18, 2026 at 04:28:17PM -0700, Randy Dunlap wrote:

Show 13 quoted lines

> If I apply the patch at
> https://lore.kernel.org/linux-doc/c5bb61cf789df1ecb32facc29df9749987c7ddfc.1773346620.git.ljs@kernel.org/
> 
> Subject: [PATCH 02/15] mm: add documentation for the mmap_prepare file operation callback
> 
> to the Linux kernel tree (e.g., linux-next-20260316), it applies cleanly.
> 
> I noticed a typo in the patch ("struct vma_area_desc" should be
> "struct vm_area_desc"). When I run
> $ git grep vma_area_desc
> the output is empty.
> 
> Is this expected? (but not by me :)

I applied the patch and git-grep does produce one line of output (the instance added by the patch).

Two possible differences:

  - are you sure the patch application succeeded?

  - are you in a different subdirectory? By default git-grep narrows its
    search to your current working directory and its subdirectories. So
    if you are in arch/ or something, it would not find the result in
    Documentation/. You can do:

      git grep vma_area_desc :/

    to search from the root of the project.

-Peff