redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity
alistair23-linux/drivers/block
History
Minchan Kim 9bc482d346 zram: use __GFP_MOVABLE for memory allocation 
Zsmalloc is ready for page migration so zram can use __GFP_MOVABLE from
now on.

I did test to see how it helps to make higher order pages.  Test
scenario is as follows.

KVM guest, 1G memory, ext4 formated zram block device,

  for i in `seq 1 8`;
  do
          dd if=/dev/vda1 of=mnt/test$i.txt bs=128M count=1 &
  done

  wait `pidof dd`

  for i in `seq 1 2 8`;
  do
          rm -rf mnt/test$i.txt
  done
  fstrim -v mnt

  echo "init"
  cat /proc/buddyinfo

  echo "compaction"
  echo 1 > /proc/sys/vm/compact_memory
  cat /proc/buddyinfo

old:

  init
  Node 0, zone      DMA    208    120     51     41     11      0      0      0      0      0      0
  Node 0, zone    DMA32  16380  13777   9184   3805    789     54      3      0      0      0      0
  compaction
  Node 0, zone      DMA    132     82     40     39     16      2      1      0      0      0      0
  Node 0, zone    DMA32   5219   5526   4969   3455   1831    677    139     15      0      0      0

new:

  init
  Node 0, zone      DMA    379    115     97     19      2      0      0      0      0      0      0
  Node 0, zone    DMA32  18891  16774  10862   3947    637     21      0      0      0      0      0
  compaction
  Node 0, zone      DMA    214     66     87     29     10      3      0      0      0      0      0
  Node 0, zone    DMA32   1612   3139   3154   2469   1745    990    384     94      7      0      0

As you can see, compaction made so many high-order pages. Yay!

Link: http://lkml.kernel.org/r/1464736881-24886-13-git-send-email-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-07-26 16:19:19 -07:00
..
aoe tree wide: get rid of __GFP_REPEAT for order-0 allocations part I 2016-06-24 17:23:52 -07:00
drbd Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-05-17 16:26:30 -07:00
mtip32xx mtip32xx: remove call to blk_queue_flush() 2016-04-12 16:00:39 -06:00
paride paride: make 'verbose' parameter an 'int' again 2016-03-15 16:55:16 -07:00
rsxx rsxx: don't open-code memdup_user() 2016-01-06 08:25:24 -05:00
xen-blkback block: kill off q->flush_flags 2016-04-13 13:33:19 -06:00
zram zram: use __GFP_MOVABLE for memory allocation 2016-07-26 16:19:19 -07:00
amiflop.c
ataflop.c
brd.c dax: enable dax in the presence of known media errors (badblocks) 2016-05-18 12:16:56 -06:00
cciss.c SCSI misc on 20160113 2016-01-13 19:37:36 -08:00
cciss.h
cciss_cmd.h
cciss_scsi.c
cciss_scsi.h
cryptoloop.c block: cryptoloop - Use new skcipher interface 2016-01-27 20:35:43 +08:00
DAC960.c
DAC960.h
floppy.c floppy: refactor open() flags handling 2016-02-06 23:00:22 +01:00
hd.c
Kconfig cpqarray: remove it from the kernel 2016-03-14 09:06:01 -06:00
loop.c Merge branch 'for-4.7/drivers' of git://git.kernel.dk/linux-block 2016-05-17 16:03:32 -07:00
loop.h block: loop: support DIO & AIO 2015-09-23 11:01:16 -06:00
Makefile drivers:block: cpqarray clean up 2016-03-15 15:59:47 -07:00
mg_disk.c
nbd.c nbd: pass the nbd pointer for flags debugfs 2016-06-08 09:03:54 -06:00
null_blk.c null_blk: add lightnvm null_blk device to the nullb_list 2016-03-18 18:10:37 -07:00
osdblk.c osdblk: switch to using blk_queue_write_cache() 2016-04-12 16:00:39 -06:00
pktcdvd.c Merge branch 'for-4.4/io-poll' of git://git.kernel.dk/linux-block 2015-11-10 17:23:49 -08:00
ps3disk.c ps3disk: switch to using blk_queue_write_cache() 2016-04-12 16:00:39 -06:00
ps3vram.c block: change ->make_request_fn() and users to return a queue cookie 2015-11-07 10:40:46 -07:00
rbd.c libceph: replace ceph_monc_request_next_osdmap() 2016-05-26 01:15:30 +02:00
rbd_types.h
skd_main.c skd: remove broken discard support 2016-04-25 19:12:38 -06:00
skd_s1120.h
smart1,2.h
sunvdc.c
swim.c
swim3.c
swim_asm.S
sx8.c sx8: use real time for the command seconds 2015-12-23 08:42:59 -07:00
umem.c block: change ->make_request_fn() and users to return a queue cookie 2015-11-07 10:40:46 -07:00
umem.h
virtio_blk.c virtio_blk: switch to using blk_queue_write_cache() 2016-04-12 16:00:39 -06:00
xen-blkfront.c xen-blkfront: save uncompleted reqs in blkfront_resume() 2016-06-29 12:32:39 -04:00
xsysace.c
z2ram.c