shmem.c (7b8d046fba91d62beb8a8f78244aaa3c23a60cdd) shmem.c (c121d3bb717ee932caf031c6a7923547f7f83163)
1/*
2 * Resizable virtual memory filesystem for Linux.
3 *
4 * Copyright (C) 2000 Linus Torvalds.
5 * 2000 Transmeta Corp.
6 * 2000-2001 Christoph Rohland
7 * 2000-2001 SAP AG
8 * 2002 Red Hat Inc.

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645 __dec_node_page_state(page, NR_FILE_PAGES);
646 __dec_node_page_state(page, NR_SHMEM);
647 xa_unlock_irq(&mapping->i_pages);
648 put_page(page);
649 BUG_ON(error);
650}
651
652/*
1/*
2 * Resizable virtual memory filesystem for Linux.
3 *
4 * Copyright (C) 2000 Linus Torvalds.
5 * 2000 Transmeta Corp.
6 * 2000-2001 Christoph Rohland
7 * 2000-2001 SAP AG
8 * 2002 Red Hat Inc.

--- 636 unchanged lines hidden (view full) ---

645 __dec_node_page_state(page, NR_FILE_PAGES);
646 __dec_node_page_state(page, NR_SHMEM);
647 xa_unlock_irq(&mapping->i_pages);
648 put_page(page);
649 BUG_ON(error);
650}
651
652/*
653 * Remove swap entry from radix tree, free the swap and its page cache.
653 * Remove swap entry from page cache, free the swap and its page cache.
654 */
655static int shmem_free_swap(struct address_space *mapping,
656 pgoff_t index, void *radswap)
657{
658 void *old;
659
660 xa_lock_irq(&mapping->i_pages);
654 */
655static int shmem_free_swap(struct address_space *mapping,
656 pgoff_t index, void *radswap)
657{
658 void *old;
659
660 xa_lock_irq(&mapping->i_pages);
661 old = radix_tree_delete_item(&mapping->i_pages, index, radswap);
661 old = __xa_cmpxchg(&mapping->i_pages, index, radswap, NULL, 0);
662 xa_unlock_irq(&mapping->i_pages);
663 if (old != radswap)
664 return -ENOENT;
665 free_swap_and_cache(radix_to_swp_entry(radswap));
666 return 0;
667}
668
669/*

--- 3342 unchanged lines hidden --- 		662 xa_unlock_irq(&mapping->i_pages);
663 if (old != radswap)
664 return -ENOENT;
665 free_swap_and_cache(radix_to_swp_entry(radswap));
666 return 0;
667}
668
669/*

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