From: Vasily Averin vvs@virtuozzo.com
[ Upstream commit 7779b047a57f6824a43d0e1f70de2741b7426b9d ]
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 vvs@virtuozzo.com Signed-off-by: Miklos Szeredi mszeredi@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/fuse/file.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 66214707a9456..d5963ef65c389 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);