ceph: kill ceph_osdc_writepages() "flags" parameter

There is only one caller of ceph_osdc_writepages(), and it always
passes 0 as its "flags" argument.  Get rid of that argument and
replace its use in ceph_osdc_writepages() with 0.
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

fs/ceph/addr.c

@@ -492,8 +492,7 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
 				   &ci->i_layout, snapc,
 				   page_off, len,
 				   ci->i_truncate_seq, ci->i_truncate_size,
-				   &inode->i_mtime,
-				   &page, 1, 0);
+				   &inode->i_mtime, &page, 1);
 	if (err < 0) {
 		dout("writepage setting page/mapping error %d %p\n", err, page);
 		SetPageError(page);

include/linux/ceph/osd_client.h

@@ -274,8 +274,7 @@ extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
 				u64 off, u64 len,
 				u32 truncate_seq, u64 truncate_size,
 				struct timespec *mtime,
-				struct page **pages, int nr_pages,
-				int flags);
+				struct page **pages, int nr_pages);
 
 /* watch/notify events */
 extern int ceph_osdc_create_event(struct ceph_osd_client *osdc,

net/ceph/osd_client.c

@@ -1866,8 +1866,7 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino,
 			 u64 off, u64 len,
 			 u32 truncate_seq, u64 truncate_size,
 			 struct timespec *mtime,
-			 struct page **pages, int num_pages,
-			 int flags)
+			 struct page **pages, int num_pages)
 {
 	struct ceph_osd_request *req;
 	int rc = 0;
@@ -1876,8 +1875,7 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino,
 	BUG_ON(vino.snap != CEPH_NOSNAP);
 	req = ceph_osdc_new_request(osdc, layout, vino, off, &len,
 				    CEPH_OSD_OP_WRITE,
-				    flags | CEPH_OSD_FLAG_ONDISK |
-					    CEPH_OSD_FLAG_WRITE,
+				    CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE,
 				    snapc, 0,
 				    truncate_seq, truncate_size, mtime,
 				    true, 1, page_align);