Don't compile in unused reparse point symlink code

Recent Windows versions now create symlinks more frequently
and they do use this "reparse point" symlink mechanism.  We can of course
do symlinks nicely to Samba and other servers which support the
CIFS Unix Extensions and we can also do SFU symlinks and "client only"
"MF" symlinks optionally, but for recent Windows we currently can not
handle the common "reparse point" symlinks fully, removing the caller
for this. We will need to extend and reenable this "reparse point" worker
code in cifs and fix cifs_symlink to call this.  In the interim this code
has been moved to its own config option so it is not compiled in by default
until cifs_symlink fixed up (and tested) to use this.

CC: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 12 insertions, 2 deletions

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 5630282f2821..ae5e451a0d08 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -2516,7 +2516,17 @@ querySymLinkRetry:
         return rc;
 }
 
-#ifdef CONFIG_CIFS_EXPERIMENTAL
+#ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL
+/*
+ *      Recent Windows versions now create symlinks more frequently
+ *      and they use the "reparse point" mechanism below.  We can of course
+ *      do symlinks nicely to Samba and other servers which support the
+ *      CIFS Unix Extensions and we can also do SFU symlinks and "client only"
+ *      "MF" symlinks optionally, but for recent Windows we really need to
+ *      reenable the code below and fix the cifs_symlink callers to handle this.
+ *      In the interim this code has been moved to its own config option so
+ *      it is not compiled in by default until callers fixed up and more tested.
+ */
 int
 CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
                         const unsigned char *searchName,
@@ -2618,7 +2628,7 @@ qreparse_out:
 
         return rc;
 }
-#endif /* CIFS_EXPERIMENTAL */
+#endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */
 
 #ifdef CONFIG_CIFS_POSIX