linux-kernel - [PATCH] mm/codetag: fix arg in pgalloc_tag_copy alloc_tag

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Message-ID: <20241022205622.133697-1-souravpanda@google.com>
Date: Tue, 22 Oct 2024 20:56:22 +0000
From: Sourav Panda <souravpanda@...gle.com>
To: akpm@...ux-foundation.org, surenb@...gle.com, yuzhao@...gle.com, 
	linux-mm@...ck.org, linux-kernel@...r.kernel.org, pasha.tatashin@...een.com, 
	weixugc@...gle.com
Cc: Sourav Panda <souravpanda@...gle.com>
Subject: [PATCH] mm/codetag: fix arg in pgalloc_tag_copy alloc_tag_sub

alloc_tag_sub() takes bytes as opposed to number of pages as argument.

Currently pgalloc_tag_copy() passes the number of pages. This fix passes
the current unit, which is the number of bytes allocated.

Fixes: e0a955bf7f61 ("mm/codetag: add pgalloc_tag_copy()")
Signed-off-by: Sourav Panda <souravpanda@...gle.com>
---
 include/linux/mm.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index ecf63d2b0582..2890001c8b97 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -4203,7 +4203,7 @@ static inline void pgalloc_tag_copy(struct folio *new, struct folio *old)
 	/* Clear the old ref to the original allocation tag. */
 	clear_page_tag_ref(&old->page);
 	/* Decrement the counters of the tag on get_new_folio. */
-	alloc_tag_sub(ref, folio_nr_pages(new));
+	alloc_tag_sub(ref, folio_size(new));
 
 	__alloc_tag_ref_set(ref, tag);
 
-- 
2.47.0.105.g07ac214952-goog