Commit d17ff438 authored Aug 29, 2022 by Vratislav Bendel Committed by Jonathan Corbet Oct 10, 2023

docs: mm: fix vm overcommit documentation for OVERCOMMIT_GUESS



Commit 8c7829b0 "mm: fix false-positive OVERCOMMIT_GUESS failures"
changed the behavior of the default OVERCOMMIT_GUESS setting.
Reflect the change also in the Documentation, namely files:
    Documentation/admin-guide/sysctl/vm.rst
    Documentation/mm/overcommit-accounting.rst

Reported-by: Jozef Bacik <jobacik@redhat.com>
Signed-off-by: Vratislav Bendel <vbendel@redhat.com>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20220829124638.63748-1-vbendel@redhat.com

parent a3c12cf3

Documentation/admin-guide/sysctl/vm.rst

+2 −2

Original line number	Diff line number	Diff line
		@@ -742,8 +742,8 @@ overcommit_memory

		This value contains a flag that enables memory overcommitment.

		When this flag is 0, the kernel attempts to estimate the amount
		of free memory left when userspace requests more memory.
		When this flag is 0, the kernel compares the userspace memory request
		size against total memory plus swap and rejects obvious overcommits.

		When this flag is 1, the kernel pretends there is always enough
		memory until it actually runs out.

Documentation/mm/overcommit-accounting.rst

+1 −2

Original line number	Diff line number	Diff line
		@@ -8,8 +8,7 @@ The Linux kernel supports the following overcommit handling modes
		Heuristic overcommit handling. Obvious overcommits of address
		space are refused. Used for a typical system. It ensures a
		seriously wild allocation fails while allowing overcommit to
		reduce swap usage. root is allowed to allocate slightly more
		memory in this mode. This is the default.
		reduce swap usage. This is the default.

		1
		Always overcommit. Appropriate for some scientific