From: Sourav Panda <souravpanda@google.com>
Date: Tue, 22 Oct 2024 23:24:40 +0000 (+0000)
Subject: mm/codetag: fix arg in pgalloc_tag_copy alloc_tag_sub
X-Git-Tag: v6.13-rc1~99^2~112
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ed265529d39ac408396c031a4fd7e1ef922b80d0;p=thirdparty%2Fkernel%2Flinux.git

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 correct unit, which is the number of bytes allocated.

Link: https://lkml.kernel.org/r/20241022232440.334820-1-souravpanda@google.com
Fixes: e0a955bf7f61 ("mm/codetag: add pgalloc_tag_copy()")
Signed-off-by: Sourav Panda <souravpanda@google.com>
Acked-by: Suren Baghdasaryan <surenb@google.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Wei Xu <weixugc@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 4570f33e2429a..eb070c14e3099 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -4207,7 +4207,7 @@ 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);