[PATCH] fuse_writepages ignores errors from fuse_writepages_fill

[Vasily Averin]

fuse_writepages() ignores some errors taken from fuse_writepages_fill()
I believe it is a bug: if .writepages is called with WB_SYNC_ALL
it should either guarantee that all data was successfully saved
or return error.

Fixes: 26d614df1da9 ("fuse: Implement writepages callback")
Signed-off-by: Vasily Averin <v...@virtuozzo.com>
---
 fs/fuse/file.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index c023f7f0..5986739 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2148,10 +2148,8 @@ static int fuse_writepages(struct address_space *mapping,
 
        err = write_cache_pages(mapping, wbc, fuse_writepages_fill, &data);
        if (data.wpa) {
-               /* Ignore errors if we can write at least one page */
                WARN_ON(!data.wpa->ia.ap.num_pages);
                fuse_writepages_send(&data);
-               err = 0;
        }
        if (data.ff)
                fuse_file_put(data.ff, false, false);
-- 
1.8.3.1