releases/4.14.130/smb3-retry-on-status_insufficient_resources-instead-of-failing-write.patch

   1 From 8d526d62db907e786fd88948c75d1833d82bd80e Mon Sep 17 00:00:00 2001
   2 From: Steve French <stfrench@microsoft.com>
   3 Date: Mon, 17 Jun 2019 14:49:07 -0500
   4 Subject: SMB3: retry on STATUS_INSUFFICIENT_RESOURCES instead of failing write
   5
   6 From: Steve French <stfrench@microsoft.com>
   7
   8 commit 8d526d62db907e786fd88948c75d1833d82bd80e upstream.
   9
  10 Some servers such as Windows 10 will return STATUS_INSUFFICIENT_RESOURCES
  11 as the number of simultaneous SMB3 requests grows (even though the client
  12 has sufficient credits).  Return EAGAIN on STATUS_INSUFFICIENT_RESOURCES
  13 so that we can retry writes which fail with this status code.
  14
  15 This (for example) fixes large file copies to Windows 10 on fast networks.
  16
  17 Signed-off-by: Steve French <stfrench@microsoft.com>
  18 CC: Stable <stable@vger.kernel.org>
  19 Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
  20 Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
  21 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  22
  23 ---
  24  fs/cifs/smb2maperror.c |    2 +-
  25  1 file changed, 1 insertion(+), 1 deletion(-)
  26
  27 --- a/fs/cifs/smb2maperror.c
  28 +++ b/fs/cifs/smb2maperror.c
  29 @@ -456,7 +456,7 @@ static const struct status_to_posix_erro
  30         {STATUS_FILE_INVALID, -EIO, "STATUS_FILE_INVALID"},
  31         {STATUS_ALLOTTED_SPACE_EXCEEDED, -EIO,
  32         "STATUS_ALLOTTED_SPACE_EXCEEDED"},
  33 -       {STATUS_INSUFFICIENT_RESOURCES, -EREMOTEIO,
  34 +       {STATUS_INSUFFICIENT_RESOURCES, -EAGAIN,
  35                                 "STATUS_INSUFFICIENT_RESOURCES"},
  36         {STATUS_DFS_EXIT_PATH_FOUND, -EIO, "STATUS_DFS_EXIT_PATH_FOUND"},
  37         {STATUS_DEVICE_DATA_ERROR, -EIO, "STATUS_DEVICE_DATA_ERROR"},