xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mm: allow swappiness that prefers reclaiming anon over the file workingset

Browse Source 
With the advent of fast random IO devices (SSDs, PMEM) and in-memory swap
devices such as zswap, it's possible for swap to be much faster than
filesystems, and for swapping to be preferable over thrashing filesystem
caches.

Allow setting swappiness - which defines the rough relative IO cost of
cache misses between page cache and swap-backed pages - to reflect such
situations by making the swap-preferred range configurable.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Link: http://lkml.kernel.org/r/20200520232525.798933-4-hannes@cmpxchg.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Johannes Weiner
2020-06-03 16:02:37 -07:00
committed by Linus Torvalds
parent 497a6c1b09
commit c843966c55
3 changed files with 21 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
mm/vmscan.c
View File

@@ -161,7 +161,7 @@ struct scan_control {
#endif
/*
* From 0 .. 100. Higher means more swappy.
* From 0 .. 200. Higher means more swappy.
*/
int vm_swappiness = 60;
/*