Commit b770ddfa authored by Pavel Shilovsky's avatar Pavel Shilovsky Committed by Steve French
Browse files

CIFS: Optimize readpages in a short read case on reconnects 



by marking pages with a data from a partially received response up-to-date.
This is suitable for non-signed connections.

Signed-off-by: default avatarPavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: default avatarSteve French <smfrench@gmail.com>
parent d913ed17

fs/cifs/file.c

+8 −3
Original line number Diff line number Diff line
@@ -3281,25 +3281,30 @@ int cifs_file_mmap(struct file *file, struct vm_area_struct *vma) 
static void

cifs_readv_complete(struct work_struct *work)

{

	unsigned int i;

	unsigned int i, got_bytes;

	struct cifs_readdata *rdata = container_of(work,

						struct cifs_readdata, work);



	got_bytes = rdata->got_bytes;

	for (i = 0; i < rdata->nr_pages; i++) {

		struct page *page = rdata->pages[i];



		lru_cache_add_file(page);



		if (rdata->result == 0) {

		if (rdata->result == 0 ||

		    (rdata->result == -EAGAIN && got_bytes)) {

			flush_dcache_page(page);

			SetPageUptodate(page);

		}



		unlock_page(page);



		if (rdata->result == 0)

		if (rdata->result == 0 ||

		    (rdata->result == -EAGAIN && got_bytes))

			cifs_readpage_to_fscache(rdata->mapping->host, page);



		got_bytes -= min_t(unsigned int, PAGE_CACHE_SIZE, got_bytes);



		page_cache_release(page);

		rdata->pages[i] = NULL;

	}