From b6a06cbbb5f7fd03589cff9178314af04c568826 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Wed, 28 Feb 2018 17:07:27 +0800 Subject: f2fs: support hot file extension This patch supports to recognize hot file extension in f2fs, so that we can allocate proper hot segment location for its data, which can lead to better hot/cold seperation in filesystem. In addition, we changes a bit on query/add/del operation method for extension_list sysfs entry as below: - Query: cat /sys/fs/f2fs//extension_list - Add: echo 'extension' > /sys/fs/f2fs//extension_list - Del: echo '!extension' > /sys/fs/f2fs//extension_list - Add: echo '[h/c]extension' > /sys/fs/f2fs//extension_list - Del: echo '[h/c]!extension' > /sys/fs/f2fs//extension_list - [h] means add/del hot file extension - [c] means add/del cold file extension Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- Documentation/ABI/testing/sysfs-fs-f2fs | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'Documentation/ABI') diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 7fa84e349ad9..540553c933b6 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -199,5 +199,7 @@ Contact: "Chao Yu" Description: Used to control configure extension list: - Query: cat /sys/fs/f2fs//extension_list - - Add: echo 'extension' > /sys/fs/f2fs//extension_list - - Del: echo '!extension' > /sys/fs/f2fs//extension_list + - Add: echo '[h/c]extension' > /sys/fs/f2fs//extension_list + - Del: echo '[h/c]!extension' > /sys/fs/f2fs//extension_list + - [h] means add/del hot file extension + - [c] means add/del cold file extension -- cgit v1.2.3