Commit a12831bf authored by Matthew Wilcox's avatar Matthew Wilcox
Browse files

shmem: Convert shmem_confirm_swap to XArray 



xa_load has its own RCU locking, so we can eliminate it here.

Signed-off-by: default avatarMatthew Wilcox <willy@infradead.org>
parent 62f945b6

mm/shmem.c

+1 −6
Original line number Diff line number Diff line
@@ -349,12 +349,7 @@ static int shmem_replace_entry(struct address_space *mapping, 
static bool shmem_confirm_swap(struct address_space *mapping,

			       pgoff_t index, swp_entry_t swap)

{

	void *item;



	rcu_read_lock();

	item = radix_tree_lookup(&mapping->i_pages, index);

	rcu_read_unlock();

	return item == swp_to_radix_entry(swap);

	return xa_load(&mapping->i_pages, index) == swp_to_radix_entry(swap);

}



/*