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@@ -712,8 +712,11 @@ static int btree_migratepage(struct address_space *mapping,
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if (page_has_private(page) &&
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!try_to_release_page(page, GFP_KERNEL))
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return -EAGAIN;
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-
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+#ifdef CONFIG_MIGRATION
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return migrate_page(mapping, newpage, page);
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+#else
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+ return -ENOSYS;
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+#endif
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}
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static int btree_writepage(struct page *page, struct writeback_control *wbc)
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@@ -821,7 +824,9 @@ static const struct address_space_operations btree_aops = {
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.releasepage = btree_releasepage,
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.invalidatepage = btree_invalidatepage,
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.sync_page = block_sync_page,
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+#ifdef CONFIG_MIGRATION
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.migratepage = btree_migratepage,
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+#endif
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};
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int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize,
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