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mm: migrate: remove migrate_folio_extra()

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migrate_folio_extra() is only called in migrate.c now, convert it a static
function and take a new src_private argument which could be shared by
migrate_folio() and filemap_migrate_folio() to simplify code a bit.

Link: https://lkml.kernel.org/r/20240524052843.182275-5-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Jane Chu <jane.chu@oracle.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Jiaqi Yan <jiaqiyan@google.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kefeng Wang 2024-05-24 13:28:42 +08:00 committed by Andrew Morton
parent 15b0c79cfa
commit 940d6683c7
2 changed files with 11 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/migrate.h
View File

@ -63,8 +63,6 @@ extern const char *migrate_reason_names[MR_TYPES];
#ifdef CONFIG_MIGRATION
void putback_movable_pages(struct list_head *l);
int migrate_folio_extra(struct address_space *mapping, struct folio *dst,
struct folio *src, enum migrate_mode mode, int extra_count);
int migrate_folio(struct address_space *mapping, struct folio *dst,
struct folio *src, enum migrate_mode mode);
int migrate_pages(struct list_head *l, new_folio_t new, free_folio_t free,

33
mm/migrate.c
View File

@ -658,18 +658,19 @@ EXPORT_SYMBOL(folio_migrate_copy);
* Migration functions
***********************************************************/
int migrate_folio_extra(struct address_space *mapping, struct folio *dst,
struct folio *src, enum migrate_mode mode, int extra_count)
static int __migrate_folio(struct address_space *mapping, struct folio *dst,
struct folio *src, void *src_private,
enum migrate_mode mode)
{
int rc;
BUG_ON(folio_test_writeback(src)); /* Writeback must be complete */
rc = folio_migrate_mapping(mapping, dst, src, extra_count);
rc = folio_migrate_mapping(mapping, dst, src, 0);
if (rc != MIGRATEPAGE_SUCCESS)
return rc;
if (src_private)
folio_attach_private(dst, folio_detach_private(src));
if (mode != MIGRATE_SYNC_NO_COPY)
folio_migrate_copy(dst, src);
else
@ -690,9 +691,10 @@ int migrate_folio_extra(struct address_space *mapping, struct folio *dst,
* Folios are locked upon entry and exit.
*/
int migrate_folio(struct address_space *mapping, struct folio *dst,
struct folio *src, enum migrate_mode mode)
struct folio *src, enum migrate_mode mode)
{
return migrate_folio_extra(mapping, dst, src, mode, 0);
BUG_ON(folio_test_writeback(src)); /* Writeback must be complete */
return __migrate_folio(mapping, dst, src, NULL, mode);
}
EXPORT_SYMBOL(migrate_folio);
@ -846,20 +848,7 @@ EXPORT_SYMBOL_GPL(buffer_migrate_folio_norefs);
int filemap_migrate_folio(struct address_space *mapping,
struct folio *dst, struct folio *src, enum migrate_mode mode)
{
int ret;
ret = folio_migrate_mapping(mapping, dst, src, 0);
if (ret != MIGRATEPAGE_SUCCESS)
return ret;
if (folio_get_private(src))
folio_attach_private(dst, folio_detach_private(src));
if (mode != MIGRATE_SYNC_NO_COPY)
folio_migrate_copy(dst, src);
else
folio_migrate_flags(dst, src);
return MIGRATEPAGE_SUCCESS;
return __migrate_folio(mapping, dst, src, folio_get_private(src), mode);
}
EXPORT_SYMBOL_GPL(filemap_migrate_folio);