linux-kernel - [PATCH] mm: slub: Wrap krealloc() __GFP_ZERO semantics diagram in literal code block

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Message-ID: <20250610092153.55093-1-bagasdotme@gmail.com>
Date: Tue, 10 Jun 2025 16:21:53 +0700
From: Bagas Sanjaya <bagasdotme@...il.com>
To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Documentation <linux-doc@...r.kernel.org>,
	Linux Memory Management List <linux-mm@...ck.org>
Cc: Feng Tang <feng.tang@...el.com>,
	Christoph Lameter <cl@...two.org>,
	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Vlastimil Babka <vbabka@...e.cz>,
	Roman Gushchin <roman.gushchin@...ux.dev>,
	Harry Yoo <harry.yoo@...cle.com>,
	Danilo Krummrich <dakr@...nel.org>,
	Bagas Sanjaya <bagasdotme@...il.com>
Subject: [PATCH] mm: slub: Wrap krealloc() __GFP_ZERO semantics diagram in literal code block

Sphinx reports htmldocs warnings:

Documentation/core-api/mm-api:40: ./mm/slub.c:4936: WARNING: Block quote ends without a blank line; unexpected unindent. [docutils]
Documentation/core-api/mm-api:40: ./mm/slub.c:4936: ERROR: Undefined substitution referenced: "--------". [docutils]

Fix the warning by wrapping krealloc() semantics diagram for __GFP_ZERO
in literal code block.

Fixes: 489a744e5fb1 ("mm: krealloc: clarify valid usage of __GFP_ZERO")
Signed-off-by: Bagas Sanjaya <bagasdotme@...il.com>
---
 mm/slub.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 31e11ef256f90a..45a963e363d32b 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -4930,12 +4930,12 @@ __do_krealloc(const void *p, size_t new_size, gfp_t flags)
  * When slub_debug_orig_size() is off, krealloc() only knows about the bucket
  * size of an allocation (but not the exact size it was allocated with) and
  * hence implements the following semantics for shrinking and growing buffers
- * with __GFP_ZERO.
+ * with __GFP_ZERO::
  *
- *         new             bucket
- * 0       size             size
- * |--------|----------------|
- * |  keep  |      zero      |
+ *           new             bucket
+ *   0       size             size
+ *   |--------|----------------|
+ *   |  keep  |      zero      |
  *
  * Otherwise, the original allocation size 'orig_size' could be used to
  * precisely clear the requested size, and the new size will also be stored
-- 
An old man doll... just what I always wanted! - Clara