1 files changed, 11 insertions, 13 deletions

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index e2b4ce1dad66..487ea8b3baaa 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1079,9 +1079,9 @@ static int cifs_writepages(struct address_space *mapping,
         unsigned int bytes_written;
         struct cifs_sb_info *cifs_sb;
         int done = 0;
-        pgoff_t end = -1;
+        pgoff_t end;
         pgoff_t index;
-        int is_range = 0;
+        int range_whole = 0;
         struct kvec iov[32];
         int len;
         int n_iov = 0;
@@ -1122,16 +1122,14 @@ static int cifs_writepages(struct address_space *mapping,
         xid = GetXid();
 
         pagevec_init(&pvec, 0);
-        if (wbc->sync_mode == WB_SYNC_NONE)
+        if (wbc->range_cyclic) {
                 index = mapping->writeback_index; /* Start from prev offset */
-        else {
-                index = 0;
-                scanned = 1;
-        }
-        if (wbc->start || wbc->end) {
-                index = wbc->start >> PAGE_CACHE_SHIFT;
-                end = wbc->end >> PAGE_CACHE_SHIFT;
-                is_range = 1;
+                end = -1;
+        } else {
+                index = wbc->range_start >> PAGE_CACHE_SHIFT;
+                end = wbc->range_end >> PAGE_CACHE_SHIFT;
+                if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
+                        range_whole = 1;
                 scanned = 1;
         }
 retry:
@@ -1167,7 +1165,7 @@ retry:
                                 break;
                         }
 
-                        if (unlikely(is_range) && (page->index > end)) {
+                        if (!wbc->range_cyclic && page->index > end) {
                                 done = 1;
                                 unlock_page(page);
                                 break;
@@ -1271,7 +1269,7 @@ retry:
                 index = 0;
                 goto retry;
         }
-        if (!is_range)
+        if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
                 mapping->writeback_index = index;
 
         FreeXid(xid);