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Diffstat (limited to 'Documentation/ABI/testing/sysfs-kernel-mm-swap')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-mm-swap | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-swap b/Documentation/ABI/testing/sysfs-kernel-mm-swap new file mode 100644 index 000000000000..587db52084c7 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-kernel-mm-swap @@ -0,0 +1,26 @@ +What: /sys/kernel/mm/swap/ +Date: August 2017 +Contact: Linux memory management mailing list <linux-mm@kvack.org> +Description: Interface for swapping + +What: /sys/kernel/mm/swap/vma_ra_enabled +Date: August 2017 +Contact: Linux memory management mailing list <linux-mm@kvack.org> +Description: Enable/disable VMA based swap readahead. + + If set to true, the VMA based swap readahead algorithm + will be used for swappable anonymous pages mapped in a + VMA, and the global swap readahead algorithm will be + still used for tmpfs etc. other users. If set to + false, the global swap readahead algorithm will be + used for all swappable pages. + +What: /sys/kernel/mm/swap/vma_ra_max_order +Date: August 2017 +Contact: Linux memory management mailing list <linux-mm@kvack.org> +Description: The max readahead size in order for VMA based swap readahead + + VMA based swap readahead algorithm will readahead at + most 1 << max_order pages for each readahead. The + real readahead size for each readahead will be scaled + according to the estimation algorithm. |