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c7cf89b5dd
Xin Long says:
====================
sctp: fully support memory accounting
sctp memory accounting is added in this patchset by using
these kernel APIs on send side:
- sk_mem_charge()
- sk_mem_uncharge()
- sk_wmem_schedule()
- sk_under_memory_pressure()
- sk_mem_reclaim()
and these on receive side:
- sk_mem_charge()
- sk_mem_uncharge()
- sk_rmem_schedule()
- sk_under_memory_pressure()
- sk_mem_reclaim()
With sctp memory accounting, we can limit the memory allocation by
either sysctl:
# sysctl -w net.sctp.sctp_mem="10 20 50"
or cgroup:
# echo $((8<<14)) > \
/sys/fs/cgroup/memory/sctp_mem/memory.kmem.tcp.limit_in_bytes
When the socket is under memory pressure, the send side will block
and wait, while the receive side will renege or drop.
v1->v2:
- add the missing Reported/Tested/Acked/-bys.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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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.