1 files changed, 16 insertions, 20 deletions

diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index ed7a2e252ad8..1daf15a1f00c 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -234,7 +234,19 @@ out:
 static int gfs2_writepages(struct address_space *mapping,
 			   struct writeback_control *wbc)
 {
-	return mpage_writepages(mapping, wbc, gfs2_get_block_noalloc);
+	struct gfs2_sbd *sdp = gfs2_mapping2sbd(mapping);
+	int ret = mpage_writepages(mapping, wbc, gfs2_get_block_noalloc);
+
+	/*
+	 * Even if we didn't write any pages here, we might still be holding
+	 * dirty pages in the ail. We forcibly flush the ail because we don't
+	 * want balance_dirty_pages() to loop indefinitely trying to write out
+	 * pages held in the ail that it can't find.
+	 */
+	if (ret == 0)
+		set_bit(SDF_FORCE_AIL_FLUSH, &sdp->sd_flags);
+
+	return ret;
 }
 
 /**
@@ -268,22 +280,6 @@ static int gfs2_write_jdata_pagevec(struct address_space *mapping,
 	for(i = 0; i < nr_pages; i++) {
 		struct page *page = pvec->pages[i];
 
-		/*
-		 * At this point, the page may be truncated or
-		 * invalidated (changing page->mapping to NULL), or
-		 * even swizzled back from swapper_space to tmpfs file
-		 * mapping. However, page->index will not change
-		 * because we have a reference on the page.
-		 */
-		if (page->index > end) {
-			/*
-			 * can't be range_cyclic (1st pass) because
-			 * end == -1 in that case.
-			 */
-			ret = 1;
-			break;
-		}
-
 		*done_index = page->index;
 
 		lock_page(page);
@@ -375,7 +371,7 @@ static int gfs2_write_cache_jdata(struct address_space *mapping,
 	int range_whole = 0;
 	int tag;
 
-	pagevec_init(&pvec, 0);
+	pagevec_init(&pvec);
 	if (wbc->range_cyclic) {
 		writeback_index = mapping->writeback_index; /* prev offset */
 		index = writeback_index;
@@ -401,8 +397,8 @@ retry:
 		tag_pages_for_writeback(mapping, index, end);
 	done_index = index;
 	while (!done && (index <= end)) {
-		nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, tag,
-			      min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1);
+		nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end,
+				tag);
 		if (nr_pages == 0)
 			break;