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Shivank Garg f609e89ae8 KVM: guest_memfd: Add slab-allocated inode cache
Add a dedicated gmem_inode structure and a slab-allocated inode cache for
guest memory backing, similar to how shmem handles inodes.

This adds the necessary allocation/destruction functions and prepares
for upcoming guest_memfd NUMA policy support changes.  Using a dedicated
structure will also allow for additional cleanups, e.g. to track flags in
gmem_inode instead of i_private.

Signed-off-by: Shivank Garg <shivankg@amd.com>
Tested-by: Ashish Kalra <ashish.kalra@amd.com>
[sean: s/kvm_gmem_inode_info/gmem_inode, name init_once()]
Reviewed-by: Ackerley Tng <ackerleytng@google.com>
Tested-by: Ackerley Tng <ackerleytng@google.com>
Link: https://lore.kernel.org/r/20251016172853.52451-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
History 2025-10-20 06:30:40 -07:00
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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 reStructuredText 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.