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| author |   Minchan Kim <minchan@kernel.org> | 2015-04-15 16:15:36 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-15 16:35:21 -0700 |
| commit | 4e3ba87845420e0bfa21e6c4f7f81897aed38f8c (patch) | |
| tree | b0eeb240f26c4edee1e298fe2ed384fb8ca0c6f4 /Documentation/ABI | |
| parent | zsmalloc: adjust ZS_ALMOST_FULL (diff) | |
| download | linux-dev-4e3ba87845420e0bfa21e6c4f7f81897aed38f8c.tar.xz linux-dev-4e3ba87845420e0bfa21e6c4f7f81897aed38f8c.zip | |
zram: support compaction
Now that zsmalloc supports compaction, zram can use it. For the first
step, this patch exports compact knob via sysfs so user can do compaction
via "echo 1 > /sys/block/zram0/compact".
Signed-off-by: Minchan Kim <minchan@kernel.org>
Cc: Juneho Choi <juno.choi@lge.com>
Cc: Gunho Lee <gunho.lee@lge.com>
Cc: Luigi Semenzato <semenzato@google.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Seth Jennings <sjennings@variantweb.net>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-block-zram | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-block-zram b/Documentation/ABI/testing/sysfs-block-zram index a6148eaf91e5..bede9028a5a0 100644 --- a/Documentation/ABI/testing/sysfs-block-zram +++ b/Documentation/ABI/testing/sysfs-block-zram @@ -141,3 +141,18 @@ Description: amount of memory ZRAM can use to store the compressed data. The limit could be changed in run time and "0" means disable the limit. No limit is the initial state. Unit: bytes + +What: /sys/block/zram<id>/compact +Date: August 2015 +Contact: Minchan Kim <minchan@kernel.org> +Description: + The compact file is write-only and trigger compaction for + allocator zrm uses. The allocator moves some objects so that + it could free fragment space. + +What: /sys/block/zram<id>/num_migrated +Date: August 2015 +Contact: Minchan Kim <minchan@kernel.org> +Description: + The compact file is read-only and shows how many object + migrated by compaction. |