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466e16f092
vfs_rmdir and vfs_unlink can return -EBUSY if the target is a mountpoint. This currently gets passed to nfserrno() by nfsd_unlink(), and that results in a WARNing, which is not user-friendly. Possibly the best NFSv4 error is NFS4ERR_FILE_OPEN, because there is a sense in which the object is currently in use by some other task. The Linux NFSv4 client will map this back to EBUSY, which is an added benefit. For NFSv3, the best we can do is probably NFS3ERR_ACCES, which isn't true, but is not less true than the other options. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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.