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-rw-r--r--fs/splice.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/splice.c b/fs/splice.c
index 7c2abd4..b5fb2f3 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -52,6 +52,15 @@ static int page_cache_pipe_buf_steal(struct pipe_inode_info *info,
WARN_ON(!PageLocked(page));
WARN_ON(!PageUptodate(page));
+ /*
+ * At least for ext2 with nobh option, we need to wait on writeback
+ * completing on this page, since we'll remove it from the pagecache.
+ * Otherwise truncate wont wait on the page, allowing the disk
+ * blocks to be reused by someone else before we actually wrote our
+ * data to them. fs corruption ensues.
+ */
+ wait_on_page_writeback(page);
+
if (PagePrivate(page))
try_to_release_page(page, mapping_gfp_mask(mapping));
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