Re: compaction: trying to understand the code

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Could you apply below patch for debugging and report it?

The Mem-info gets printed forever. So I have picked the first 2 of them
and then another 2 after some time. These 4 Mem-infos are shown in
the attached log.

Thanks
Iram
Mem-info:
Normal per-cpu:
CPU    0: hi:  186, btch:  31 usd: 184
active_anon:40345 inactive_anon:0 isolated_anon:8549
active_file:2713 inactive_file:10418 isolated_file:1871
unevictable:0 dirty:0 writeback:0 unstable:0
free:53713 slab_reclaimable:533 slab_unreclaimable:1076
mapped:9461 shmem:2349 pagetables:1574 bounce:0
Normal free:214852kB min:2884kB low:3604kB high:4324kB active_anon:161380kB inactive_anon:0kB active_file:10852kB inactive_file:41672kB unevictable:0kB isolated(anon):34196kB isolated(file):7484kB present:520192kB mlocked:0kB dirty:0kB writeback:0kB mapped:37844kB shmem:9396kB slab_reclaimable:2132kB slab_unreclaimable:4304kB kernel_stack:1880kB pagetables:6296kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
Normal: 31*4kB 29*8kB 20*16kB 23*32kB 21*64kB 19*128kB 19*256kB 20*512kB 20*1024kB 3*2048kB 41*4096kB = 214852kB
15491 total pagecache pages
131072 pages of RAM
54242 free pages
18897 reserved pages
1609 slab pages
84316 pages shared
0 pages swap cached
Mem-info:
Normal per-cpu:
CPU    0: hi:  186, btch:  31 usd: 184
active_anon:40345 inactive_anon:0 isolated_anon:8549
active_file:2713 inactive_file:10418 isolated_file:1871
unevictable:0 dirty:0 writeback:0 unstable:0
free:53713 slab_reclaimable:533 slab_unreclaimable:1076
mapped:9461 shmem:2349 pagetables:1574 bounce:0
Normal free:214852kB min:2884kB low:3604kB high:4324kB active_anon:161380kB inactive_anon:0kB active_file:10852kB inactive_file:41672kB unevictable:0kB isolated(anon):34196kB isolated(file):7484kB present:520192kB mlocked:0kB dirty:0kB writeback:0kB mapped:37844kB shmem:9396kB slab_reclaimable:2132kB slab_unreclaimable:4304kB kernel_stack:1880kB pagetables:6296kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
Normal: 26*4kB 27*8kB 19*16kB 22*32kB 20*64kB 19*128kB 19*256kB 20*512kB 20*1024kB 3*2048kB 41*4096kB = 214704kB
15491 total pagecache pages
131072 pages of RAM
54258 free pages
18897 reserved pages
1609 slab pages
84296 pages shared
0 pages swap cached


[snip]


Mem-info:
Normal per-cpu:
CPU    0: hi:  186, btch:  31 usd: 100
active_anon:40429 inactive_anon:0 isolated_anon:8581
active_file:2719 inactive_file:10423 isolated_file:1871
unevictable:0 dirty:0 writeback:0 unstable:0
free:53777 slab_reclaimable:534 slab_unreclaimable:1070
mapped:9461 shmem:2349 pagetables:1574 bounce:0
Normal free:215108kB min:2884kB low:3604kB high:4324kB active_anon:161716kB inactive_anon:0kB active_file:10876kB inactive_file:41692kB unevictable:0kB isolated(anon):34324kB isolated(file):7484kB present:520192kB mlocked:0kB dirty:0kB writeback:0kB mapped:37844kB shmem:9396kB slab_reclaimable:2136kB slab_unreclaimable:4280kB kernel_stack:1872kB pagetables:6296kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
Normal: 31*4kB 29*8kB 20*16kB 21*32kB 22*64kB 19*128kB 20*256kB 20*512kB 20*1024kB 3*2048kB 41*4096kB = 215108kB
15491 total pagecache pages
131072 pages of RAM
54221 free pages
18897 reserved pages
1604 slab pages
84289 pages shared
0 pages swap cached
Mem-info:
Normal per-cpu:
CPU    0: hi:  186, btch:  31 usd: 100
active_anon:40429 inactive_anon:0 isolated_anon:8581
active_file:2719 inactive_file:10423 isolated_file:1871
unevictable:0 dirty:0 writeback:0 unstable:0
free:53777 slab_reclaimable:534 slab_unreclaimable:1070
mapped:9461 shmem:2349 pagetables:1574 bounce:0
Normal free:215108kB min:2884kB low:3604kB high:4324kB active_anon:161716kB inactive_anon:0kB active_file:10876kB inactive_file:41692kB unevictable:0kB isolated(anon):34324kB isolated(file):7484kB present:520192kB mlocked:0kB dirty:0kB writeback:0kB mapped:37844kB shmem:9396kB slab_reclaimable:2136kB slab_unreclaimable:4280kB kernel_stack:1872kB pagetables:6296kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
Normal: 31*4kB 29*8kB 20*16kB 21*32kB 22*64kB 19*128kB 20*256kB 20*512kB 20*1024kB 3*2048kB 41*4096kB = 215108kB
15491 total pagecache pages
131072 pages of RAM
54222 free pages
18897 reserved pages
1603 slab pages
84289 pages shared
0 pages swap cached

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