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Commit 24950898 authored by Pavel Machek's avatar Pavel Machek Committed by Linus Torvalds
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vm.txt: document min_free_pages as critical for correctness 



min_free_pages is critical for correctness, document it as such.

Signed-off-by: default avatarPavel Machek <pavel@suse.cz>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f4e87570

Documentation/sysctl/vm.txt

+6 −0
Original line number Diff line number Diff line
@@ -112,6 +112,12 @@ of kilobytes free. The VM uses this number to compute a pages_min 
value for each lowmem zone in the system.  Each lowmem zone gets 

a number of reserved free pages based proportionally on its size.



Some minimal ammount of memory is needed to satisfy PF_MEMALLOC

allocations; if you set this to lower than 1024KB, your system will

become subtly broken, and prone to deadlock under high loads.



Setting this too high will OOM your machine instantly.



==============================================================



percpu_pagelist_fraction