ext4: track writeback errors using the generic tracking infrastructure

We already using mapping_set_error() in fs/ext4/page_io.c, so all we
need to do is to use file_check_and_advance_wb_err() when handling
fsync() requests in ext4_sync_file().

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org

diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index 87a7ff0..712f009 100644 (file)
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -164,6 +164,9 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
                        ret = err;
        }
 out:
+       err = file_check_and_advance_wb_err(file);
+       if (ret == 0)
+               ret = err;
        trace_ext4_sync_file_exit(inode, ret);
        return ret;
 }