50 	struct page **compressed_pages;
84 static int btrfs_decompress_biovec(int type, struct page **pages_in,
111 	struct page *page;  in check_compressed_csum()  local
121 		page = cb->compressed_pages[i];  in check_compressed_csum()
124 		kaddr = kmap_atomic(page);  in check_compressed_csum()
159 	struct page *page;  in end_compressed_bio_read()  local
194 		page = cb->compressed_pages[index];  in end_compressed_bio_read()
195 		page->mapping = NULL;  in end_compressed_bio_read()
196 		page_cache_release(page);  in end_compressed_bio_read()
232 	struct page *pages[16];  in end_compressed_writeback()
274 	struct page *page;  in end_compressed_bio_write()  local
308 		page = cb->compressed_pages[index];  in end_compressed_bio_write()
309 		page->mapping = NULL;  in end_compressed_bio_write()
310 		page_cache_release(page);  in end_compressed_bio_write()
332 				 struct page **compressed_pages,  in btrfs_submit_compressed_write()
341 	struct page *page;  in btrfs_submit_compressed_write()  local
376 		page = compressed_pages[pg_index];  in btrfs_submit_compressed_write()
377 		page->mapping = inode->i_mapping;  in btrfs_submit_compressed_write()
379 			ret = io_tree->ops->merge_bio_hook(WRITE, page, 0,  in btrfs_submit_compressed_write()
385 		page->mapping = NULL;  in btrfs_submit_compressed_write()
386 		if (ret || bio_add_page(bio, page, PAGE_CACHE_SIZE, 0) <  in btrfs_submit_compressed_write()
416 			bio_add_page(bio, page, PAGE_CACHE_SIZE, 0);  in btrfs_submit_compressed_write()
453 	struct page *page;  in add_ra_bio_pages()  local
462 	page = cb->orig_bio->bi_io_vec[cb->orig_bio->bi_vcnt - 1].bv_page;  in add_ra_bio_pages()
463 	last_offset = (page_offset(page) + PAGE_CACHE_SIZE);  in add_ra_bio_pages()
479 		page = radix_tree_lookup(&mapping->page_tree, pg_index);  in add_ra_bio_pages()
481 		if (page && !radix_tree_exceptional_entry(page)) {  in add_ra_bio_pages()
488 		page = __page_cache_alloc(mapping_gfp_mask(mapping) &  in add_ra_bio_pages()
490 		if (!page)  in add_ra_bio_pages()
493 		if (add_to_page_cache_lru(page, mapping, pg_index,  in add_ra_bio_pages()
495 			page_cache_release(page);  in add_ra_bio_pages()
505 		set_page_extent_mapped(page);  in add_ra_bio_pages()
517 			unlock_page(page);  in add_ra_bio_pages()
518 			page_cache_release(page);  in add_ra_bio_pages()
523 		if (page->index == end_index) {  in add_ra_bio_pages()
530 				userpage = kmap_atomic(page);  in add_ra_bio_pages()
532 				flush_dcache_page(page);  in add_ra_bio_pages()
537 		ret = bio_add_page(cb->orig_bio, page,  in add_ra_bio_pages()
542 			page_cache_release(page);  in add_ra_bio_pages()
545 			unlock_page(page);  in add_ra_bio_pages()
546 			page_cache_release(page);  in add_ra_bio_pages()
578 	struct page *page;  in btrfs_submit_compressed_read()  local
625 	cb->compressed_pages = kcalloc(nr_pages, sizeof(struct page *),  in btrfs_submit_compressed_read()
662 		page = cb->compressed_pages[pg_index];  in btrfs_submit_compressed_read()
663 		page->mapping = inode->i_mapping;  in btrfs_submit_compressed_read()
664 		page->index = em_start >> PAGE_CACHE_SHIFT;  in btrfs_submit_compressed_read()
667 			ret = tree->ops->merge_bio_hook(READ, page, 0,  in btrfs_submit_compressed_read()
673 		page->mapping = NULL;  in btrfs_submit_compressed_read()
674 		if (ret || bio_add_page(comp_bio, page, PAGE_CACHE_SIZE, 0) <  in btrfs_submit_compressed_read()
711 			bio_add_page(comp_bio, page, PAGE_CACHE_SIZE, 0);  in btrfs_submit_compressed_read()
885 			 struct page **pages,  in btrfs_compress_pages()
924 static int btrfs_decompress_biovec(int type, struct page **pages_in,  in btrfs_decompress_biovec()
947 int btrfs_decompress(int type, unsigned char *data_in, struct page *dest_page,  in btrfs_decompress()
989 	struct page *page_out = bvec[*pg_index].bv_page;  in btrfs_decompress_buf2page()
1074 		struct page *page = bvec[pg_index].bv_page;  in btrfs_clear_biovec_end()  local
1084 			kaddr = kmap_atomic(page);  in btrfs_clear_biovec_end()