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authorSteve French <smfrench@gmail.com>2018-05-10 10:59:37 -0500
committerSteve French <smfrench@gmail.com>2018-05-10 19:21:14 -0500
commit6e70c267e68d77679534dcf4aaf84e66f2cf1425 (patch)
tree18dbbc4fd655506f31bb8586a4c64eacf3b67893 /fs/cifs
parentae2cd7fb478b8da707906ee1706ae1379968a8f9 (diff)
downloadlinux-6e70c267e68d77679534dcf4aaf84e66f2cf1425.tar.bz2
smb3: directory sync should not return an error
As with NFS, which ignores sync on directory handles, fsync on a directory handle is a noop for CIFS/SMB3. Do not return an error on it. It breaks some database apps otherwise. Signed-off-by: Steve French <smfrench@gmail.com> CC: Stable <stable@vger.kernel.org> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/cifsfs.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index f715609b13f3..5a5a0158cc8f 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -1047,6 +1047,18 @@ out:
return rc;
}
+/*
+ * Directory operations under CIFS/SMB2/SMB3 are synchronous, so fsync()
+ * is a dummy operation.
+ */
+static int cifs_dir_fsync(struct file *file, loff_t start, loff_t end, int datasync)
+{
+ cifs_dbg(FYI, "Sync directory - name: %pD datasync: 0x%x\n",
+ file, datasync);
+
+ return 0;
+}
+
static ssize_t cifs_copy_file_range(struct file *src_file, loff_t off,
struct file *dst_file, loff_t destoff,
size_t len, unsigned int flags)
@@ -1181,6 +1193,7 @@ const struct file_operations cifs_dir_ops = {
.copy_file_range = cifs_copy_file_range,
.clone_file_range = cifs_clone_file_range,
.llseek = generic_file_llseek,
+ .fsync = cifs_dir_fsync,
};
static void