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| author |   Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-06-06 12:55:08 -0400 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-08-02 12:34:04 -0400 |
| commit | 2ec810d59602f0e08847f986ef8e16469722496f (patch) | |
| tree | 9df23e6ae72487ce2a84dbaf1a95160c0a5accba /mm | |
| parent | mm/migrate: Convert migrate_page() to migrate_folio() (diff) | |
| download | wireguard-linux-2ec810d59602f0e08847f986ef8e16469722496f.tar.xz wireguard-linux-2ec810d59602f0e08847f986ef8e16469722496f.zip | |
mm/migrate: Add filemap_migrate_folio()
There is nothing iomap-specific about iomap_migratepage(), and it fits
a pattern used by several other filesystems, so move it to mm/migrate.c,
convert it to be filemap_migrate_folio() and convert the iomap filesystems
to use it.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/migrate.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index 77aeb7e12f62..4ed8f0d53c77 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -784,6 +784,26 @@ int buffer_migrate_folio_norefs(struct address_space *mapping, } #endif +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; +} +EXPORT_SYMBOL_GPL(filemap_migrate_folio); + /* * Writeback a folio to clean the dirty state */ |