Linux / Mm
File Age

File age measurements show the distribution of file ages (days since the first commit) and the recency of file updates (days since the latest commit).

Summary
  • Number of files: 147
  • Daily file updates (only one update per file and date counted): 186
  • First update: 2005-04-17
  • Latest update: 2022-01-18
  • Days between first and latest update: 6121 (874 weeks, estimated 4370 working days)
  • Active days (at least one file change): 4343
  • Data:
File Change History Overall
File Age Distribution Overall
Days since first update
  • There are 147 files with 102,846 lines of code in files.
    • 126 files that are 366+ days old (98,253 lines of code)
    • 10 files that are 181-365 days old (1,318 lines of code)
    • 6 files that are 91-180 days old (2,561 lines of code)
    • 4 files that are 31-90 days old (509 lines of code)
    • 1 files that are 1-30 days old (205 lines of code)
95% | 1% | 2% | <1% | <1%
Legend:
366+
181-365
91-180
31-90
1-30
Latest Change Distribution Overall
Days since last update
  • There are 147 files with 102,846 lines of code in files.
    • 6 files have been last changed 366+ days ago (580 lines of code)
    • 6 files have been last changed 181-365 days ago (1,223 lines of code)
    • 13 files have been last changed 91-180 days ago (1,325 lines of code)
    • 0 files have been last changed 31-90 days ago (0 lines of code)
    • 122 files have been last changed 1-30 days ago (99,718 lines of code)
<1% | 1% | 1% | 0% | 96%
Legend:
366+
181-365
91-180
31-90
1-30
File Change History per File Extension
c, html, txt, h, json, svg
File Age Distribution per Extension
Days since first update
366+
181-365
91-180
31-90
1-30
c96% | 1% | 2% | <1% | <1%
h74% | 3% | 22% | <1% | 0%
Latest Change Distribution per Extension
Days since last update
366+
181-365
91-180
31-90
1-30
c<1% | 1% | 1% | 0% | 97%
h0% | 0% | 5% | 0% | 94%
File Change History per Logical Decomposition
primary
primary (file age distribution)
Days since first update
366+
181-365
91-180
31-90
1-30
ROOT99% | <1% | 0% | 0% | <1%
kasan98% | 1% | 0% | 0% | 0%
kfence0% | 100% | 0% | 0% | 0%
damon0% | 0% | 83% | 16% | 0%
primary (latest change distribution)
Days since last update
366+
181-365
91-180
31-90
1-30
ROOT<1% | 1% | 1% | 0% | 96%
kasan0% | 0% | 7% | 0% | 92%
damon0% | 0% | 0% | 0% | 100%
kfence0% | 0% | 0% | 0% | 100%
Oldest Files (Top 50)
File# lines# unitslast modified
(days ago)		created
(days ago)		# changes
vmscan.c
in root
 2664 103 19 6136 1930
filemap.c
in root
 2185 91 19 6136 1755
oom_kill.c
in root
 710 36 17 6136 1289
memory.c
in root
 3482 131 19 6134 2087
mmap.c
in root
 2364 80 17 6134 1671
mincore.c
in root
 180 7 275 6134 403
2042 74 19 6129 1531
5738 271 19 6122 2343
slab.c
in root
 2770 109 19 6122 1562
vmalloc.c
in root
 2483 77 19 6122 1362
1518 76 19 6122 1441
rmap.c
in root
 1321 53 19 6122 1431
mremap.c
in root
 705 17 19 6122 917
610 19 19 6122 868
highmem.c
in root
 498 21 19 6122 460
truncate.c
in root
 479 25 19 6122 941
mempool.c
in root
 329 19 19 6122 429
swapfile.c
in root
 2730 111 19 6106 1340
nommu.c
in root
 1155 48 19 6106 1306
shmem.c
in root
 3097 101 19 6071 1770
hugetlb.c
in root
 4343 175 19 6070 1883
madvise.c
in root
 1040 29 19 6070 891
msync.c
in root
 77 - 150 6070 191
sparse.c
in root
 647 47 19 6069 861
fadvise.c
in root
 136 3 345 6068 401
page_io.c
in root
 319 10 29 6067 663
389 16 19 5993 640
mprotect.c
in root
 504 11 19 5979 805
1366 66 19 5940 1412
swap.c
in root
 653 49 19 5940 1189
internal.h
in root
 430 28 19 5872 951
util.c
in root
 638 36 19 5870 982
slob.c
in root
 475 22 21 5870 754
mlock.c
in root
 489 19 19 5867 871
migrate.c
in root
 2008 62 19 5797 1567
mmzone.c
in root
 71 3 344 5792 273
vmstat.c
in root
 1519 85 19 5697 1176
748 45 19 5585 1104
slub.c
in root
 4177 224 19 5387 1852
422 17 19 5224 357
165 5 19 5224 518
dmapool.c
in root
 353 9 19 5176 304
pagewalk.c
in root
 425 18 19 5112 415
4765 234 19 5110 2016
maccess.c
in root
 197 11 19 5097 249
mm_init.c
in root
 159 7 150 4942 235
621 24 213 4937 506
failslab.c
in root
 47 3 871 4790 192
percpu.c
in root
 1855 65 19 4731 1040
kmemleak.c
in root
 1175 62 19 4620 880
Files Not Recently Changed (Top 50)
File# lines# unitslast modified
(days ago)		created
(days ago)		# changes
46 7 1487 2149 33
memtest.c
in root
 94 5 1487 2486 50
failslab.c
in root
 47 3 871 4790 192
160 11 871 3906 184
vmacache.c
in root
 78 3 415 2858 128
155 6 415 2611 93
fadvise.c
in root
 136 3 345 6068 401
mmzone.c
in root
 71 3 344 5792 273
mincore.c
in root
 180 7 275 6134 403
shuffle.c
in root
 102 5 213 995 80
ptdump.c
in root
 113 8 213 730 42
621 24 213 4937 506
13 1 150 279 9
42 - 150 545 19
cma.h
in root
 42 3 150 2486 95
shuffle.h
in root
 44 7 150 995 56
msync.c
in root
 77 - 150 6070 191
80 8 150 2151 159
86 6 150 274 10
88 8 150 3404 97
127 7 150 3340 226
152 10 150 2486 163
mm_init.c
in root
 159 7 150 4942 235
189 4 150 3747 335
226 7 150 408 34
page_io.c
in root
 319 10 29 6067 663
86 3 24 90 9
cma.c
in root
 365 15 24 2737 395
list_lru.c
in root
 495 34 24 3081 310
124 18 21 423 27
usercopy.c
in root
 167 10 21 2067 178
slob.c
in root
 475 22 21 5870 754
6 - 19 90 11
23 2 19 408 29
28 5 19 217 9
32 - 19 219 14
ioremap.c
in root
 32 1 19 545 48
33 3 19 667 37
35 2 19 408 29
init-mm.c
in root
 36 1 19 4614 151
tags.c
in kasan
 42 1 19 1133 79
kfence.h
in kfence
 46 - 19 342 29
68 5 19 217 9
71 4 19 4523 311
76 6 19 4318 179
80 5 19 217 22
sw_tags.c
in kasan
 113 8 19 408 48
128 9 19 2611 114
dbgfs-test.h
in damon
 136 3 19 148 35
141 14 19 1689 101
Most Recently Created Files (Top 50)
File# lines# unitslast modified
(days ago)		created
(days ago)		# changes
205 15 19 20 2
paddr.c
in damon
 224 12 19 90 11
reclaim.c
in damon
 193 6 19 90 11
86 3 24 90 9
6 - 19 90 11
dbgfs.c
in damon
 789 30 19 148 39
core.c
in damon
 725 47 19 148 27
vaddr.c
in damon
 533 26 19 148 28
vaddr-test.h
in damon
 191 10 19 148 26
core-test.h
in damon
 187 8 19 148 20
dbgfs-test.h
in damon
 136 3 19 148 35
184 10 19 210 38
80 5 19 217 22
68 5 19 217 9
28 5 19 217 9
32 - 19 219 14
86 6 150 274 10
13 1 150 279 9
core.c
in kfence
 590 28 19 342 81
report.c
in kfence
 191 6 19 342 44
kfence.h
in kfence
 46 - 19 342 29
shadow.c
in kasan
 295 17 19 408 49
226 7 150 408 34
hw_tags.c
in kasan
 159 9 19 408 76
sw_tags.c
in kasan
 113 8 19 408 48
35 2 19 408 29
23 2 19 408 29
165 10 19 415 31
124 18 21 423 27
42 - 150 545 19
ioremap.c
in root
 32 1 19 545 48
925 75 19 610 103
197 4 19 667 51
33 3 19 667 37
ptdump.c
in root
 113 8 213 730 42
memremap.c
in root
 338 20 19 915 187
shuffle.c
in root
 102 5 213 995 80
shuffle.h
in root
 44 7 150 995 56
176 9 19 1052 57
init.c
in kasan
 381 23 19 1133 81
common.c
in kasan
 362 25 19 1133 228
generic.c
in kasan
 289 24 19 1133 127
tags.c
in kasan
 42 1 19 1133 79
198 24 19 1252 110
memfd.c
in root
 218 5 19 1534 84
hmm.c
in root
 421 16 19 1608 276
157 5 19 1689 155
141 14 19 1689 101
199 7 19 1805 178
227 14 19 1806 192
Most Recently Changed Files (Top 50)
File# lines# unitslast modified
(days ago)		created
(days ago)		# changes
slab.h
in root
 610 34 16 3499 638
mmap.c
in root
 2364 80 17 6134 1671
oom_kill.c
in root
 710 36 17 6136 1289
5738 271 19 6122 2343
4765 234 19 5110 2016
hugetlb.c
in root
 4343 175 19 6070 1883
slub.c
in root
 4177 224 19 5387 1852
memory.c
in root
 3482 131 19 6134 2087
shmem.c
in root
 3097 101 19 6071 1770
slab.c
in root
 2770 109 19 6122 1562
swapfile.c
in root
 2730 111 19 6106 1340
vmscan.c
in root
 2664 103 19 6136 1930
vmalloc.c
in root
 2483 77 19 6122 1362
2279 82 19 4038 1394
filemap.c
in root
 2185 91 19 6136 1755
2042 74 19 6129 1531
ksm.c
in root
 2016 68 19 4517 933
migrate.c
in root
 2008 62 19 5797 1567
percpu.c
in root
 1855 65 19 4731 1040
gup.c
in root
 1825 72 19 2800 755
1732 67 19 4273 963
zsmalloc.c
in root
 1706 118 19 2925 514
1670 61 19 2017 429
vmstat.c
in root
 1519 85 19 5697 1176
1518 76 19 6122 1441
1366 61 19 4523 1198
1366 66 19 5940 1412
rmap.c
in root
 1321 53 19 6122 1431
z3fold.c
in root
 1295 47 19 2084 367
memblock.c
in root
 1179 70 19 4229 1015
kmemleak.c
in root
 1175 62 19 4620 880
nommu.c
in root
 1155 48 19 6106 1306
madvise.c
in root
 1040 29 19 6070 891
zswap.c
in root
 1011 39 19 3129 436
925 75 19 610 103
831 35 19 3499 788
dbgfs.c
in damon
 789 30 19 148 39
748 45 19 5585 1104
core.c
in damon
 725 47 19 148 27
mremap.c
in root
 705 17 19 6122 917
685 37 19 3473 299
swap.c
in root
 653 49 19 5940 1189
sparse.c
in root
 647 47 19 6069 861
util.c
in root
 638 36 19 5870 982
610 19 19 6122 868
core.c
in kfence
 590 28 19 342 81
vaddr.c
in damon
 533 26 19 148 28
512 11 19 2343 284
mprotect.c
in root
 504 11 19 5979 805
highmem.c
in root
 498 21 19 6122 460