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| Filename | Latest commit message | Latest commit date |
|---|---|---|
feb8ae43a7
there are 3 remaining callers of sget_userns() - sget(), mount_ns() and mount_pseudo_xattr(). Extra check in sget() is conditional upon mount being neither KERNMOUNT nor SUBMOUNT, the identical one in mount_ns() - upon being not KERNMOUNT; mount_pseudo_xattr() has no such checks at all. However, mount_ns() is never used with SUBMOUNT and mount_pseudo_xattr() is used only for KERNMOUNT, so both would be fine with the same logics as currently done in sget(), allowing to consolidate the entire thing in sget_userns() itself. That's not where these checks will end up in the long run, though - the whole reason why they'd been done so deep in the bowels of mount(2) was that there had been no way for a filesystem to specify which userns to look at until it has entered ->mount(). Now there is a place where filesystem could override the defaults - ->init_fs_context(). Which allows to pull the checks out into the callers of vfs_get_tree(). That'll take quite a bit of massage, but that mess is possible to tease apart. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
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| README | ||
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.