[PATCH v4 10/12] btrfs: extent_io: Kill the BUG_ON() in extent_write_cache_pages()

[Qu Wenruo <wqu@xxxxxxxx>]

Signed-off-by: Qu Wenruo <wqu@xxxxxxxx>
---
 fs/btrfs/extent_io.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 52c1b0ce6bfd..0d1f09b41421 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -3980,7 +3980,10 @@ static int extent_write_cache_pages(struct address_space *mapping,
 			 */
 			if (!trylock_page(page)) {
 				ret = flush_write_bio(epd);
-				BUG_ON(ret < 0);
+				if (ret < 0) {
+					done = 1;
+					break;
+				}
 				lock_page(page);
 			}
 
@@ -3992,7 +3995,10 @@ static int extent_write_cache_pages(struct address_space *mapping,
 			if (wbc->sync_mode != WB_SYNC_NONE) {
 				if (PageWriteback(page)) {
 					ret = flush_write_bio(epd);
-					BUG_ON(ret < 0);
+					if (ret < 0) {
+						done = 1;
+						break;
+					}
 				}
 				wait_on_page_writeback(page);
 			}
-- 
2.20.1