From: Theodore Ts'o <tytso@mit.edu>
Date: Mon, 31 Dec 2018 05:11:07 +0000 (-0500)
Subject: ext4: track writeback errors using the generic tracking infrastructure
X-Git-Tag: v5.0-rc1~6^2~1
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=95cb67138746451cc84cf8e516e14989746e93b0;p=linux.git

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 87a7ff00ef62..712f00995390 100644
--- 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;
 }