The patch below does not apply to the 4.20-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 082aaa8700415f6471ec9c5ef0c8307ca214989a Mon Sep 17 00:00:00 2001
From: Pavel Shilovsky <pshilov@xxxxxxxxxxxxx>
Date: Fri, 18 Jan 2019 15:54:34 -0800
Subject: [PATCH] CIFS: Do not consider -ENODATA as stat failure for reads
When doing reads beyound the end of a file the server returns
error STATUS_END_OF_FILE error which is mapped to -ENODATA.
Currently we report it as a failure which confuses read stats.
Change it to not consider -ENODATA as failure for stat purposes.
Signed-off-by: Pavel Shilovsky <pshilov@xxxxxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
CC: Stable <stable@xxxxxxxxxxxxxxx>
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index d858dc04fdc3..ef52d6642431 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -3241,7 +3241,7 @@ smb2_readv_callback(struct mid_q_entry *mid)
rdata->mr = NULL;
}
#endif
- if (rdata->result) {
+ if (rdata->result && rdata->result != -ENODATA) {
cifs_stats_fail_inc(tcon, SMB2_READ_HE);
trace_smb3_read_err(0 /* xid */,
rdata->cfile->fid.persistent_fid,
