修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/Documentation/ABI/testing/sysfs-fs-ext4
..
..
@@ -45,8 +45,8 @@
45
45
 		parameter will have their blocks allocated out of a
46
46
 		block group specific preallocation pool, so that small
47
47
 		files are packed closely together.  Each large file
48
-		 will have its blocks allocated out of its own unique
49
-		 preallocation pool.
48
+		will have its blocks allocated out of its own unique
49
+		preallocation pool.
50
50
 
51
51
 What:		/sys/fs/ext4/<disk>/inode_readahead_blks
52
52
 Date:		March 2008
..
..
@@ -109,3 +109,10 @@
109
109
 		write operation (since a 4k random write might turn
110
110
 		into a much larger write due to the zeroout
111
111
 		operation).
112
+
113
+What:		/sys/fs/ext4/<disk>/journal_task
114
+Date:		February 2019
115
+Contact:	"Theodore Ts'o" <tytso@mit.edu>
116
+Description:
117
+		This file is read-only and shows the pid of journal thread in
118
+		current pid-namespace or 0 if task is unreachable.