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[ Upstream commitd439b29057] *_get_inode_info() functions expect -EREMOTE when query path info calls find a DFS link, regardless whether !CONFIG_CIFS_DFS_UPCALL or 'nodfs' mount option. Otherwise, those files will miss the fake DFS file attributes. Before patch $ mount.cifs //srv/dfs /mnt/1 -o ...,nodfs $ ls -l /mnt/1 ls: cannot access '/mnt/1/link': Operation not supported total 0 -rwxr-xr-x 1 root root 0 Jul 26 2022 dfstest2_file1.txt drwxr-xr-x 2 root root 0 Aug 8 2022 dir1 d????????? ? ? ? ? ? link After patch $ mount.cifs //srv/dfs /mnt/1 -o ...,nodfs $ ls -l /mnt/1 total 0 -rwxr-xr-x 1 root root 0 Jul 26 2022 dfstest2_file1.txt drwxr-xr-x 2 root root 0 Aug 8 2022 dir1 drwx--x--x 2 root root 0 Jun 26 20:29 link Fixes:c877ce47e1("cifs: reduce roundtrips on create/qinfo requests") Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Signed-off-by: Steve French <stfrench@microsoft.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.