From: "zhangyi (F)"
mainline inclusion
from mainline-v5.14
commit 51fd43e2801054b1321b1d81b91dc37efdff5127
category: bugfix
issue: #I3ZXZF
CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
-----------------------------------------------
Now block_dump feature is gone, remove all comments in docs.
Signed-off-by: zhangyi (F)
Reviewed-by: Jan Kara
Reviewed-by: Christoph Hellwig
Link: https://lore.kernel.org/r/20210313030146.2882027-4-yi.zhang@huawei.com
Signed-off-by: Jens Axboe
Signed-off-by: Ye Bin
Reviewed-by: Zhang Yi
Signed-off-by: Chen Jun
Signed-off-by: Yu Changchun
---
Documentation/admin-guide/laptops/laptop-mode.rst | 11 -----------
Documentation/admin-guide/sysctl/vm.rst | 8 --------
2 files changed, 19 deletions(-)
diff --git a/Documentation/admin-guide/laptops/laptop-mode.rst b/Documentation/admin-guide/laptops/laptop-mode.rst
index c984c4262f2e..b61cc601d298 100644
--- a/Documentation/admin-guide/laptops/laptop-mode.rst
+++ b/Documentation/admin-guide/laptops/laptop-mode.rst
@@ -101,17 +101,6 @@ this results in concentration of disk activity in a small time interval which
occurs only once every 10 minutes, or whenever the disk is forced to spin up by
a cache miss. The disk can then be spun down in the periods of inactivity.
-If you want to find out which process caused the disk to spin up, you can
-gather information by setting the flag /proc/sys/vm/block_dump. When this flag
-is set, Linux reports all disk read and write operations that take place, and
-all block dirtyings done to files. This makes it possible to debug why a disk
-needs to spin up, and to increase battery life even more. The output of
-block_dump is written to the kernel output, and it can be retrieved using
-"dmesg". When you use block_dump and your kernel logging level also includes
-kernel debugging messages, you probably want to turn off klogd, otherwise
-the output of block_dump will be logged, causing disk activity that is not
-normally there.
-
Configuration
-------------
diff --git a/Documentation/admin-guide/sysctl/vm.rst b/Documentation/admin-guide/sysctl/vm.rst
index 06027c6a233a..a5fbef4740c2 100644
--- a/Documentation/admin-guide/sysctl/vm.rst
+++ b/Documentation/admin-guide/sysctl/vm.rst
@@ -25,7 +25,6 @@ files can be found in mm/swap.c.
Currently, these files are in /proc/sys/vm:
- admin_reserve_kbytes
-- block_dump
- compact_memory
- compaction_proactiveness
- compact_unevictable_allowed
@@ -106,13 +105,6 @@ On x86_64 this is about 128MB.
Changing this takes effect whenever an application requests memory.
-block_dump
-==========
-
-block_dump enables block I/O debugging when set to a nonzero value. More
-information on block I/O debugging is in Documentation/admin-guide/laptops/laptop-mode.rst.
-
-
compact_memory
==============
--
2.22.0
