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btrfs: Convert btrfs_migratepage to migrate_folio

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Use filemap_migrate_folio() to do the bulk of the work, and then copy
the ordered flag across if needed.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Matthew Wilcox (Oracle) 2022-06-06 10:47:21 -04:00
parent 2ec810d596
commit e7a60a1787
1 changed files with 9 additions and 17 deletions
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26
fs/btrfs/inode.c
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@ -8255,30 +8255,24 @@ static bool btrfs_release_folio(struct folio *folio, gfp_t gfp_flags)
}
#ifdef CONFIG_MIGRATION
static int btrfs_migratepage(struct address_space *mapping,
struct page *newpage, struct page *page,
static int btrfs_migrate_folio(struct address_space *mapping,
struct folio *dst, struct folio *src,
enum migrate_mode mode)
{
int ret;
int ret = filemap_migrate_folio(mapping, dst, src, mode);
ret = migrate_page_move_mapping(mapping, newpage, page, 0);
if (ret != MIGRATEPAGE_SUCCESS)
return ret;
if (page_has_private(page))
attach_page_private(newpage, detach_page_private(page));
if (PageOrdered(page)) {
ClearPageOrdered(page);
SetPageOrdered(newpage);
if (folio_test_ordered(src)) {
folio_clear_ordered(src);
folio_set_ordered(dst);
}
if (mode != MIGRATE_SYNC_NO_COPY)
migrate_page_copy(newpage, page);
else
migrate_page_states(newpage, page);
return MIGRATEPAGE_SUCCESS;
}
#else
#define btrfs_migrate_folio NULL
#endif
static void btrfs_invalidate_folio(struct folio *folio, size_t offset,
@ -11422,9 +11416,7 @@ static const struct address_space_operations btrfs_aops = {
.direct_IO = noop_direct_IO,
.invalidate_folio = btrfs_invalidate_folio,
.release_folio = btrfs_release_folio,
#ifdef CONFIG_MIGRATION
.migratepage = btrfs_migratepage,
#endif
.migrate_folio = btrfs_migrate_folio,
.dirty_folio = filemap_dirty_folio,
.error_remove_page = generic_error_remove_page,
.swap_activate = btrfs_swap_activate,