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mm/rmap: inline folio_test_large_maybe_mapped_shared() into callers

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To prevent the function from being used when CONFIG_MM_ID is disabled, we
intend to inline it into its few callers, which also would help maintain
the expected code placement.

Link: https://lkml.kernel.org/r/20250424155606.57488-1-lance.yang@linux.dev
Signed-off-by: Lance Yang <lance.yang@linux.dev>
Suggested-by: David Hildenbrand <david@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Mingzhe Yang <mingzhe.yang@ly.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Lance Yang
2025-04-24 23:56:06 +08:00
committed by Andrew Morton
parent ee43f26b49
commit 4428a35f91
4 changed files with 4 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/mm.h
View File

@@ -2111,7 +2111,7 @@ static inline bool folio_maybe_mapped_shared(struct folio *folio)
*/
if (mapcount <= 1)
return false;
return folio_test_large_maybe_mapped_shared(folio);
return test_bit(FOLIO_MM_IDS_SHARED_BITNUM, &folio->_mm_ids);
}
#ifndef HAVE_ARCH_MAKE_FOLIO_ACCESSIBLE

4
include/linux/page-flags.h
View File

@@ -1230,10 +1230,6 @@ static inline int folio_has_private(const struct folio *folio)
return !!(folio->flags & PAGE_FLAGS_PRIVATE);
}
static inline bool folio_test_large_maybe_mapped_shared(const struct folio *folio)
{
return test_bit(FOLIO_MM_IDS_SHARED_BITNUM, &folio->_mm_ids);
}
#undef PF_ANY
#undef PF_HEAD
#undef PF_NO_TAIL

2
include/linux/rmap.h
View File

@@ -223,7 +223,7 @@ static inline void __folio_large_mapcount_sanity_checks(const struct folio *foli
VM_WARN_ON_ONCE(folio_mm_id(folio, 1) != MM_ID_DUMMY &&
folio->_mm_id_mapcount[1] < 0);
VM_WARN_ON_ONCE(!folio_mapped(folio) &&
folio_test_large_maybe_mapped_shared(folio));
test_bit(FOLIO_MM_IDS_SHARED_BITNUM, &folio->_mm_ids));
}
static __always_inline void folio_set_large_mapcount(struct folio *folio,

4
mm/memory.c
View File

@@ -3768,7 +3768,7 @@ static bool __wp_can_reuse_large_anon_folio(struct folio *folio,
* If all folio references are from mappings, and all mappings are in
* the page tables of this MM, then this folio is exclusive to this MM.
*/
if (folio_test_large_maybe_mapped_shared(folio))
if (test_bit(FOLIO_MM_IDS_SHARED_BITNUM, &folio->_mm_ids))
return false;
VM_WARN_ON_ONCE(folio_test_ksm(folio));
@@ -3791,7 +3791,7 @@ static bool __wp_can_reuse_large_anon_folio(struct folio *folio,
folio_lock_large_mapcount(folio);
VM_WARN_ON_ONCE_FOLIO(folio_large_mapcount(folio) > folio_ref_count(folio), folio);
if (folio_test_large_maybe_mapped_shared(folio))
if (test_bit(FOLIO_MM_IDS_SHARED_BITNUM, &folio->_mm_ids))
goto unlock;
if (folio_large_mapcount(folio) != folio_ref_count(folio))
goto unlock;