54 						struct page *page);
108 nfs_page_find_head_request_locked(struct nfs_inode *nfsi, struct page *page)  in nfs_page_find_head_request_locked()  argument
112 	if (PagePrivate(page))  in nfs_page_find_head_request_locked()
113 		req = (struct nfs_page *)page_private(page);  in nfs_page_find_head_request_locked()
114 	else if (unlikely(PageSwapCache(page)))  in nfs_page_find_head_request_locked()
116 			page);  in nfs_page_find_head_request_locked()
131 static struct nfs_page *nfs_page_find_head_request(struct page *page)  in nfs_page_find_head_request()  argument
133 	struct inode *inode = page_file_mapping(page)->host;  in nfs_page_find_head_request()
137 	req = nfs_page_find_head_request_locked(NFS_I(inode), page);  in nfs_page_find_head_request()
143 static void nfs_grow_file(struct page *page, unsigned int offset, unsigned int count)  in nfs_grow_file()  argument
145 	struct inode *inode = page_file_mapping(page)->host;  in nfs_grow_file()
152 	if (i_size > 0 && page_file_index(page) < end_index)  in nfs_grow_file()
154 	end = page_file_offset(page) + ((loff_t)offset+count);  in nfs_grow_file()
164 static void nfs_set_pageerror(struct page *page)  in nfs_set_pageerror()  argument
166 	nfs_zap_mapping(page_file_mapping(page)->host, page_file_mapping(page));  in nfs_set_pageerror()
265 static void nfs_set_page_writeback(struct page *page)  in nfs_set_page_writeback()  argument
267 	struct nfs_server *nfss = NFS_SERVER(page_file_mapping(page)->host);  in nfs_set_page_writeback()
268 	int ret = test_set_page_writeback(page);  in nfs_set_page_writeback()
428 nfs_lock_and_join_requests(struct page *page, bool nonblock)  in nfs_lock_and_join_requests()  argument
430 	struct inode *inode = page_file_mapping(page)->host;  in nfs_lock_and_join_requests()
448 	head = nfs_page_find_head_request_locked(NFS_I(inode), page);  in nfs_lock_and_join_requests()
553 				struct page *page, bool nonblock)  in nfs_page_async_flush()  argument
558 	req = nfs_lock_and_join_requests(page, nonblock);  in nfs_page_async_flush()
565 	nfs_set_page_writeback(page);  in nfs_page_async_flush()
577 static int nfs_do_writepage(struct page *page, struct writeback_control *wbc, struct nfs_pageio_des…  in nfs_do_writepage()  argument
579 	struct inode *inode = page_file_mapping(page)->host;  in nfs_do_writepage()
585 	nfs_pageio_cond_complete(pgio, page_file_index(page));  in nfs_do_writepage()
586 	ret = nfs_page_async_flush(pgio, page, wbc->sync_mode == WB_SYNC_NONE);  in nfs_do_writepage()
588 		redirty_page_for_writepage(wbc, page);  in nfs_do_writepage()
597 static int nfs_writepage_locked(struct page *page, struct writeback_control *wbc)  in nfs_writepage_locked()  argument
602 	nfs_pageio_init_write(&pgio, page->mapping->host, wb_priority(wbc),  in nfs_writepage_locked()
604 	err = nfs_do_writepage(page, wbc, &pgio);  in nfs_writepage_locked()
613 int nfs_writepage(struct page *page, struct writeback_control *wbc)  in nfs_writepage()  argument
617 	ret = nfs_writepage_locked(page, wbc);  in nfs_writepage()
618 	unlock_page(page);  in nfs_writepage()
622 static int nfs_writepages_callback(struct page *page, struct writeback_control *wbc, void *data)  in nfs_writepages_callback()  argument
626 	ret = nfs_do_writepage(page, wbc, data);  in nfs_writepages_callback()
627 	unlock_page(page);  in nfs_writepages_callback()
748 						struct page *page)  in nfs_page_search_commits_for_head_request_locked()  argument
757 	freq = pnfs_search_commit_reqs(inode, &cinfo, page);  in nfs_page_search_commits_for_head_request_locked()
763 		if (freq->wb_page == page)  in nfs_page_search_commits_for_head_request_locked()
853 nfs_clear_page_commit(struct page *page)  in nfs_clear_page_commit()  argument
855 	dec_zone_page_state(page, NR_UNSTABLE_NFS);  in nfs_clear_page_commit()
856 	dec_bdi_stat(inode_to_bdi(page_file_mapping(page)->host), BDI_RECLAIMABLE);  in nfs_clear_page_commit()
982 		struct page *page,  in nfs_try_to_update_request()  argument
991 	if (!PagePrivate(page))  in nfs_try_to_update_request()
998 		req = nfs_page_find_head_request_locked(NFS_I(inode), page);  in nfs_try_to_update_request()
1046 	error = nfs_wb_page(inode, page);  in nfs_try_to_update_request()
1059 		struct page *page, unsigned int offset, unsigned int bytes)  in nfs_setup_write_request()  argument
1061 	struct inode *inode = page_file_mapping(page)->host;  in nfs_setup_write_request()
1064 	req = nfs_try_to_update_request(inode, page, offset, bytes);  in nfs_setup_write_request()
1067 	req = nfs_create_request(ctx, page, NULL, offset, bytes);  in nfs_setup_write_request()
1075 static int nfs_writepage_setup(struct nfs_open_context *ctx, struct page *page,  in nfs_writepage_setup()  argument
1080 	req = nfs_setup_write_request(ctx, page, offset, count);  in nfs_writepage_setup()
1084 	nfs_grow_file(page, offset, count);  in nfs_writepage_setup()
1091 int nfs_flush_incompatible(struct file *file, struct page *page)  in nfs_flush_incompatible()  argument
1107 		req = nfs_page_find_head_request(page);  in nfs_flush_incompatible()
1111 		do_flush = req->wb_page != page || req->wb_context != ctx;  in nfs_flush_incompatible()
1123 		status = nfs_wb_page(page_file_mapping(page)->host, page);  in nfs_flush_incompatible()
1160 static bool nfs_write_pageuptodate(struct page *page, struct inode *inode)  in nfs_write_pageuptodate()  argument
1174 	return PageUptodate(page) != 0;  in nfs_write_pageuptodate()
1192 static int nfs_can_extend_write(struct file *file, struct page *page, struct inode *inode)  in nfs_can_extend_write()  argument
1200 	if (!nfs_write_pageuptodate(page, inode))  in nfs_can_extend_write()
1232 int nfs_updatepage(struct file *file, struct page *page,  in nfs_updatepage()  argument
1236 	struct inode	*inode = page_file_mapping(page)->host;  in nfs_updatepage()
1242 		file, count, (long long)(page_file_offset(page) + offset));  in nfs_updatepage()
1244 	if (nfs_can_extend_write(file, page, inode)) {  in nfs_updatepage()
1245 		count = max(count + offset, nfs_page_length(page));  in nfs_updatepage()
1249 	status = nfs_writepage_setup(ctx, page, offset, count);  in nfs_updatepage()
1251 		nfs_set_pageerror(page);  in nfs_updatepage()
1253 		__set_page_dirty_nobuffers(page);  in nfs_updatepage()
1869 int nfs_wb_page_cancel(struct inode *inode, struct page *page)  in nfs_wb_page_cancel()  argument
1874 	wait_on_page_writeback(page);  in nfs_wb_page_cancel()
1878 	req = nfs_lock_and_join_requests(page, false);  in nfs_wb_page_cancel()
1897 int nfs_wb_page(struct inode *inode, struct page *page)  in nfs_wb_page()  argument
1899 	loff_t range_start = page_file_offset(page);  in nfs_wb_page()
1912 		wait_on_page_writeback(page);  in nfs_wb_page()
1913 		if (clear_page_dirty_for_io(page)) {  in nfs_wb_page()
1914 			ret = nfs_writepage_locked(page, &wbc);  in nfs_wb_page()
1920 		if (!PagePrivate(page))  in nfs_wb_page()
1932 int nfs_migrate_page(struct address_space *mapping, struct page *newpage,  in nfs_migrate_page()
1933 		struct page *page, enum migrate_mode mode)  in nfs_migrate_page()  argument
1943 	if (PagePrivate(page))  in nfs_migrate_page()
1946 	if (!nfs_fscache_release_page(page, GFP_KERNEL))  in nfs_migrate_page()
1949 	return migrate_page(mapping, newpage, page, mode);  in nfs_migrate_page()