You've already forked linux-rockchip
mirror of
https://github.com/armbian/linux-rockchip.git
synced 2026-01-06 11:08:10 -08:00
c91bdc9358
Patch series "memcg swap fix & cleanups". This patch (of 4): Since commit2d1c498072("mm: memcontrol: make swap tracking an integral part of memory control"), the cgroup swap arrays are used to track memory ownership at the time of swap readahead and swapoff, even if swap space *accounting* has been turned off by the user via swapaccount=0 (which sets cgroup_memory_noswap). However, the patch was overzealous: by simply dropping the cgroup_memory_noswap conditionals in the swapon, swapoff and uncharge path, it caused the cgroup arrays being allocated even when the memory controller as a whole is disabled. This is a waste of that memory. Restore mem_cgroup_disabled() checks, implied previously by cgroup_memory_noswap, in the swapon, swapoff, and swap_entry_free callbacks. Link: https://lkml.kernel.org/r/20220926135704.400818-1-hannes@cmpxchg.org Link: https://lkml.kernel.org/r/20220926135704.400818-2-hannes@cmpxchg.org Fixes:2d1c498072("mm: memcontrol: make swap tracking an integral part of memory control") Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reported-by: Hugh Dickins <hughd@google.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Hugh Dickins <hughd@google.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Roman Gushchin <roman.gushchin@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.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.