[PATCH 6/6] mm: migrate: Drop unused argument of migrate_page_move_mapping()

Jan Kara
2018-12-11T17:21:53Z

All callers of migrate_page_move_mapping() now pass NULL for 'head'
argument. Drop it.

Signed-off-by: Jan Kara <jack@suse.cz>
---
fs/aio.c | 2 +-
fs/f2fs/data.c | 2 +-
fs/iomap.c | 2 +-
fs/ubifs/file.c | 2 +-
include/linux/migrate.h | 3 +--
mm/migrate.c | 7 +++----
6 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/fs/aio.c b/fs/aio.c
index 97f983592925..4f4878ebca9a 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -408,7 +408,7 @@ static int aio_migratepage(struct address_space *mapping, struct page *new,
BUG_ON(PageWriteback(old));
get_page(new);

- rc = migrate_page_move_mapping(mapping, new, old, NULL, mode, 1);
+ rc = migrate_page_move_mapping(mapping, new, old, mode, 1);
if (rc != MIGRATEPAGE_SUCCESS) {
put_page(new);
goto out_unlock;
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index b293cb3e27a2..008b74eff00d 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -2738,7 +2738,7 @@ int f2fs_migrate_page(struct address_space *mapping,
*/
extra_count = (atomic_written ? 1 : 0) - page_has_private(page);
rc = migrate_page_move_mapping(mapping, newpage,
- page, NULL, mode, extra_count);
+ page, mode, extra_count);
if (rc != MIGRATEPAGE_SUCCESS) {
if (atomic_written)
mutex_unlock(&fi->inmem_lock);
diff --git a/fs/iomap.c b/fs/iomap.c
index 3ffb776fbebe..8df6a75d2d11 100644
--- a/fs/iomap.c
+++ b/fs/iomap.c
@@ -550,7 +550,7 @@ iomap_migrate_page(struct address_space *mapping, struct page *newpage,
{
int ret;

- ret = migrate_page_move_mapping(mapping, newpage, page, NULL, mode, 0);
+ ret = migrate_page_move_mapping(mapping, newpage, page, mode, 0);
if (ret != MIGRATEPAGE_SUCCESS)
return ret;

diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 1b78f2e09218..5d2ffb1a45fc 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1481,7 +1481,7 @@ static int ubifs_migrate_page(struct address_space *mapping,
{
int rc;

- rc = migrate_page_move_mapping(mapping, newpage, page, NULL, mode, 0);
+ rc = migrate_page_move_mapping(mapping, newpage, page, mode, 0);
if (rc != MIGRATEPAGE_SUCCESS)
return rc;

diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index f2b4abbca55e..8eeeaf946f95 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -77,8 +77,7 @@ extern void migrate_page_copy(struct page *newpage, struct page *page);
extern int migrate_huge_page_move_mapping(struct address_space *mapping,
struct page *newpage, struct page *page);
extern int migrate_page_move_mapping(struct address_space *mapping,
- struct page *newpage, struct page *page,
- struct buffer_head *head, enum migrate_mode mode,
+ struct page *newpage, struct page *page, enum migrate_mode mode,
int extra_count);
#else

diff --git a/mm/migrate.c b/mm/migrate.c
index c4075d5ec073..1e47ea88a5b3 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -403,8 +403,7 @@ static int expected_page_refs(struct page *page)
* 3 for pages with a mapping and PagePrivate/PagePrivate2 set.
*/
int migrate_page_move_mapping(struct address_space *mapping,
- struct page *newpage, struct page *page,
- struct buffer_head *head, enum migrate_mode mode,
+ struct page *newpage, struct page *page, enum migrate_mode mode,
int extra_count)
{
XA_STATE(xas, &mapping->i_pages, page_index(page));
@@ -691,7 +690,7 @@ int migrate_page(struct address_space *mapping,

BUG_ON(PageWriteback(page)); /* Writeback must be complete */

- rc = migrate_page_move_mapping(mapping, newpage, page, NULL, mode, 0);
+ rc = migrate_page_move_mapping(mapping, newpage, page, mode, 0);

if (rc != MIGRATEPAGE_SUCCESS)
return rc;
@@ -794,7 +793,7 @@ static int __buffer_migrate_page(struct address_space *mapping,
}
}

- rc = migrate_page_move_mapping(mapping, newpage, page, NULL, mode, 0);
+ rc = migrate_page_move_mapping(mapping, newpage, page, mode, 0);
if (rc != MIGRATEPAGE_SUCCESS)
goto unlock_buffers;

--
2.16.4