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UPSTREAM: mm/codetag: fix arg in pgalloc_tag_copy alloc_tag_sub

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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: e0a955bf7f ("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>

(cherry picked from commit ed265529d39ac408396c031a4fd7e1ef922b80d0)
Bug: 380948583
Change-Id: I6c2aa55cf58eb581e2819260db055de2e60006b5
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
This commit is contained in:
Sourav Panda
2024-10-22 23:24:40 +00:00
committed by Suren Baghdasaryan
parent 56df78dee9
commit 3dc52add2f
1 changed files with 1 additions and 1 deletions
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include/linux/mm.h
+1 -1
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@@ -4228,7 +4228,7 @@ 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);