1*d9bfcfdcSHuang YingWhat:		/sys/kernel/mm/swap/
2*d9bfcfdcSHuang YingDate:		August 2017
3*d9bfcfdcSHuang YingContact:	Linux memory management mailing list <linux-mm@kvack.org>
4*d9bfcfdcSHuang YingDescription:	Interface for swapping
5*d9bfcfdcSHuang Ying
6*d9bfcfdcSHuang YingWhat:		/sys/kernel/mm/swap/vma_ra_enabled
7*d9bfcfdcSHuang YingDate:		August 2017
8*d9bfcfdcSHuang YingContact:	Linux memory management mailing list <linux-mm@kvack.org>
9*d9bfcfdcSHuang YingDescription:	Enable/disable VMA based swap readahead.
10*d9bfcfdcSHuang Ying
11*d9bfcfdcSHuang Ying		If set to true, the VMA based swap readahead algorithm
12*d9bfcfdcSHuang Ying		will be used for swappable anonymous pages mapped in a
13*d9bfcfdcSHuang Ying		VMA, and the global swap readahead algorithm will be
14*d9bfcfdcSHuang Ying		still used for tmpfs etc. other users.  If set to
15*d9bfcfdcSHuang Ying		false, the global swap readahead algorithm will be
16*d9bfcfdcSHuang Ying		used for all swappable pages.
17*d9bfcfdcSHuang Ying
18*d9bfcfdcSHuang YingWhat:		/sys/kernel/mm/swap/vma_ra_max_order
19*d9bfcfdcSHuang YingDate:		August 2017
20*d9bfcfdcSHuang YingContact:	Linux memory management mailing list <linux-mm@kvack.org>
21*d9bfcfdcSHuang YingDescription:	The max readahead size in order for VMA based swap readahead
22*d9bfcfdcSHuang Ying
23*d9bfcfdcSHuang Ying		VMA based swap readahead algorithm will readahead at
24*d9bfcfdcSHuang Ying		most 1 << max_order pages for each readahead.  The
25*d9bfcfdcSHuang Ying		real readahead size for each readahead will be scaled
26*d9bfcfdcSHuang Ying		according to the estimation algorithm.
27