1 files changed, 7 insertions, 0 deletions

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index da0f4ffa0613..18e84a4e0504 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -95,6 +95,7 @@ struct smb_vol {
         bool local_lease:1; /* check leases only on local system, not remote */
         bool noblocksnd:1;
         bool noautotune:1;
+        bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
         unsigned int rsize;
         unsigned int wsize;
         unsigned int sockopt;
@@ -1274,6 +1275,10 @@ cifs_parse_mount_options(char *options, const char *devname,
                         vol->intr = 0;
                 } else if (strnicmp(data, "intr", 4) == 0) {
                         vol->intr = 1;
+                } else if (strnicmp(data, "nostrictsync", 12) == 0) {
+                        vol->nostrictsync = 1;
+                } else if (strnicmp(data, "strictsync", 10) == 0) {
+                        vol->nostrictsync = 0;
                 } else if (strnicmp(data, "serverino", 7) == 0) {
                         vol->server_ino = 1;
                 } else if (strnicmp(data, "noserverino", 9) == 0) {
@@ -2160,6 +2165,8 @@ static void setup_cifs_sb(struct smb_vol *pvolume_info,
                 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
         if (pvolume_info->nobrl)
                 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
+        if (pvolume_info->nostrictsync)
+                cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_SSYNC;
         if (pvolume_info->mand_lock)
                 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOPOSIXBRL;
         if (pvolume_info->cifs_acl)