diff options
| author | Andrew Morton <akpm@linux-foundation.org> | 2015-05-05 16:23:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-05-05 17:10:10 -0700 |
| commit | 99ebbd30e3640f6addb37f222b4d6ad4b807d9ea (patch) | |
| tree | 4d2c84d1eaa83b8a48f3aeece8ff7245eb5aa315 /drivers/block/zram | |
| parent | d9cee5d4f66ef36f69b0108dedbad7f7009bb6a8 (diff) | |
revert "zram: move compact_store() to sysfs functions area"
Revert commit c72c6160d967ed26a0b136dbab337f821d233509
It was intended to be a cosmetic change that w/o any functional change
and was part of a bigger change:
http://lkml.iu.edu/hypermail/linux/kernel/1503.1/01818.html
Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/block/zram')
| -rw-r--r-- | drivers/block/zram/zram_drv.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index c94386aa563d..8dcbced0eafd 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -74,6 +74,27 @@ static inline struct zram *dev_to_zram(struct device *dev) return (struct zram *)dev_to_disk(dev)->private_data; } +static ssize_t compact_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t len) +{ + unsigned long nr_migrated; + struct zram *zram = dev_to_zram(dev); + struct zram_meta *meta; + + down_read(&zram->init_lock); + if (!init_done(zram)) { + up_read(&zram->init_lock); + return -EINVAL; + } + + meta = zram->meta; + nr_migrated = zs_compact(meta->mem_pool); + atomic64_add(nr_migrated, &zram->stats.num_migrated); + up_read(&zram->init_lock); + + return len; +} + static ssize_t disksize_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -1038,6 +1059,7 @@ static const struct block_device_operations zram_devops = { .owner = THIS_MODULE }; +static DEVICE_ATTR_WO(compact); static DEVICE_ATTR_RW(disksize); static DEVICE_ATTR_RO(initstate); static DEVICE_ATTR_WO(reset); @@ -1114,6 +1136,7 @@ static struct attribute *zram_disk_attrs[] = { &dev_attr_num_writes.attr, &dev_attr_failed_reads.attr, &dev_attr_failed_writes.attr, + &dev_attr_compact.attr, &dev_attr_invalid_io.attr, &dev_attr_notify_free.attr, &dev_attr_zero_pages.attr, |