1 What: /sys/block/zram<id>/disksize
2 Date: August 2010
3 Contact: Nitin Gupta <ngupta@vflare.org>
4 Description:
5 The disksize file is read-writ
6 which represents the limit on
7 that can be stored in this dis
8 Unit: bytes
9
10 What: /sys/block/zram<id>/initstate
11 Date: August 2010
12 Contact: Nitin Gupta <ngupta@vflare.org>
13 Description:
14 The initstate file is read-onl
15 state of the device.
16
17 What: /sys/block/zram<id>/reset
18 Date: August 2010
19 Contact: Nitin Gupta <ngupta@vflare.org>
20 Description:
21 The reset file is write-only a
22 device. The reset operation fr
23 with this device.
24
25 What: /sys/block/zram<id>/max_comp_s
26 Date: February 2014
27 Contact: Sergey Senozhatsky <sergey.seno
28 Description:
29 The max_comp_streams file is r
30 number of backend's zcomp_strm
31 concurrent compress operations
32
33 What: /sys/block/zram<id>/comp_algor
34 Date: February 2014
35 Contact: Sergey Senozhatsky <sergey.seno
36 Description:
37 The comp_algorithm file is rea
38 available and selected compres
39 compression algorithm selectio
40
41 What: /sys/block/zram<id>/mem_used_m
42 Date: August 2014
43 Contact: Minchan Kim <minchan@kernel.org
44 Description:
45 The mem_used_max file is write
46 the counter of maximum memory
47 compressed data. For resetting
48 "0". Otherwise, you could see
49 Unit: bytes
50
51 What: /sys/block/zram<id>/mem_limit
52 Date: August 2014
53 Contact: Minchan Kim <minchan@kernel.org
54 Description:
55 The mem_limit file is write-on
56 amount of memory ZRAM can use
57 The limit could be changed in
58 the limit. No limit is the ini
59
60 What: /sys/block/zram<id>/compact
61 Date: August 2015
62 Contact: Minchan Kim <minchan@kernel.org
63 Description:
64 The compact file is write-only
65 allocator zrm uses. The alloca
66 it could free fragment space.
67
68 What: /sys/block/zram<id>/io_stat
69 Date: August 2015
70 Contact: Sergey Senozhatsky <sergey.seno
71 Description:
72 The io_stat file is read-only
73 statistics not accounted by bl
74 failed_reads, failed_writes, e
75 block layer statistics file fo
76
77 What: /sys/block/zram<id>/mm_stat
78 Date: August 2015
79 Contact: Sergey Senozhatsky <sergey.seno
80 Description:
81 The mm_stat file is read-only
82 statistics (orig_data_size, co
83 similar to block layer statist
84
85 What: /sys/block/zram<id>/debug_stat
86 Date: July 2016
87 Contact: Sergey Senozhatsky <sergey.seno
88 Description:
89 The debug_stat file is read-on
90 device's debugging info useful
91 format is not documented inten
92 anytime without any notice.
93
94 What: /sys/block/zram<id>/backing_de
95 Date: June 2017
96 Contact: Minchan Kim <minchan@kernel.org
97 Description:
98 The backing_dev file is read-w
99 device for zram to write incom
100 For using, user should enable
101
102 What: /sys/block/zram<id>/idle
103 Date: November 2018
104 Contact: Minchan Kim <minchan@kernel.org
105 Description:
106 idle file is write-only and ma
107 If system has mounted debugfs,
108 are idle via /sys/kernel/debug
109
110 What: /sys/block/zram<id>/writeback
111 Date: November 2018
112 Contact: Minchan Kim <minchan@kernel.org
113 Description:
114 The writeback file is write-on
115 huge page writeback to backing
116
117 What: /sys/block/zram<id>/bd_stat
118 Date: November 2018
119 Contact: Minchan Kim <minchan@kernel.org
120 Description:
121 The bd_stat file is read-only
122 statistics (bd_count, bd_reads
123 similar to block layer statist
124
125 What: /sys/block/zram<id>/writeback_
126 Date: November 2018
127 Contact: Minchan Kim <minchan@kernel.org
128 Description:
129 The writeback_limit_enable fil
130 eanbe of writeback_limit featu
131 No limit "0" is the initial st
132
133 What: /sys/block/zram<id>/writeback_
134 Date: November 2018
135 Contact: Minchan Kim <minchan@kernel.org
136 Description:
137 The writeback_limit file is re
138 amount of writeback ZRAM can d
139 in run time.
140
141 What: /sys/block/zram<id>/recomp_alg
142 Date: November 2022
143 Contact: Sergey Senozhatsky <senozhatsky
144 Description:
145 The recomp_algorithm file is r
146 or show secondary compression
147
148 What: /sys/block/zram<id>/recompress
149 Date: November 2022
150 Contact: Sergey Senozhatsky <senozhatsky
151 Description:
152 The recompress file is write-o
153 with secondary compression alg
154
155 What: /sys/block/zram<id>/algorithm_
156 Date: August 2024
157 Contact: Sergey Senozhatsky <senozhatsky
158 Description:
159 The algorithm_params file is w
160 compression algorithm paramete
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