Btrfs: tag pages for writeback in sync

[pandora-kernel.git] / fs / btrfs / extent_io.c

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index abb922d..89bbde4 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2421,6 +2421,7 @@ static int extent_write_cache_pages(struct extent_io_tree *tree,
        pgoff_t index;
        pgoff_t end;            /* Inclusive */
        int scanned = 0;
+       int tag;
 
        pagevec_init(&pvec, 0);
        if (wbc->range_cyclic) {
@@ -2431,11 +2432,16 @@ static int extent_write_cache_pages(struct extent_io_tree *tree,
                end = wbc->range_end >> PAGE_CACHE_SHIFT;
                scanned = 1;
        }
+       if (wbc->sync_mode == WB_SYNC_ALL)
+               tag = PAGECACHE_TAG_TOWRITE;
+       else
+               tag = PAGECACHE_TAG_DIRTY;
 retry:
+       if (wbc->sync_mode == WB_SYNC_ALL)
+               tag_pages_for_writeback(mapping, index, end);
        while (!done && !nr_to_write_done && (index <= end) &&
-              (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
-                             PAGECACHE_TAG_DIRTY, min(end - index,
-                                 (pgoff_t)PAGEVEC_SIZE-1) + 1))) {
+              (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, tag,
+                       min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1))) {
                unsigned i;
 
                scanned = 1;