[PATCH 4.19 42/50] ext4: track writeback errors using the generic tracking infrastructure

From: Greg Kroah-Hartman
Date: Tue Jan 15 2019 - 11:43:29 EST


4.19-stable review patch. If anyone has any objections, please let me know.

------------------

From: Theodore Ts'o <tytso@xxxxxxx>

commit 95cb67138746451cc84cf8e516e14989746e93b0 upstream.

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@xxxxxxx>
Cc: stable@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
fs/ext4/fsync.c | 3 +++
1 file changed, 3 insertions(+)

--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -164,6 +164,9 @@ int ext4_sync_file(struct file *file, lo
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;
}