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btrfs: Convert btree_migratepage to migrate_folio

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Use a folio throughout this function.  migrate_page() will be converted
later.

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 09:22:19 -04:00
parent 108ca83581
commit 8958b55142
1 changed files with 10 additions and 12 deletions
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20
fs/btrfs/disk-io.c
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@ -952,28 +952,28 @@ void btrfs_submit_metadata_bio(struct inode *inode, struct bio *bio, int mirror_
}
#ifdef CONFIG_MIGRATION
static int btree_migratepage(struct address_space *mapping,
struct page *newpage, struct page *page,
enum migrate_mode mode)
static int btree_migrate_folio(struct address_space *mapping,
struct folio *dst, struct folio *src, enum migrate_mode mode)
{
/*
* we can't safely write a btree page from here,
* we haven't done the locking hook
*/
if (PageDirty(page))
if (folio_test_dirty(src))
return -EAGAIN;
/*
* Buffers may be managed in a filesystem specific way.
* We must have no buffers or drop them.
*/
if (page_has_private(page) &&
!try_to_release_page(page, GFP_KERNEL))
if (folio_get_private(src) &&
!filemap_release_folio(src, GFP_KERNEL))
return -EAGAIN;
return migrate_page(mapping, newpage, page, mode);
return migrate_page(mapping, &dst->page, &src->page, mode);
}
#else
#define btree_migrate_folio NULL
#endif
static int btree_writepages(struct address_space *mapping,
struct writeback_control *wbc)
{
@ -1073,9 +1073,7 @@ static const struct address_space_operations btree_aops = {
.writepages = btree_writepages,
.release_folio = btree_release_folio,
.invalidate_folio = btree_invalidate_folio,
#ifdef CONFIG_MIGRATION
.migratepage = btree_migratepage,
#endif
.migrate_folio = btree_migrate_folio,
.dirty_folio = btree_dirty_folio,
};