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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-29 16:38:48 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-29 16:38:48 -0700
commita7ca10f263d7e673c74d8e0946d6b9993405cc9c (patch)
tree7c50f0e728ca1a426235356acba1115c45dfe809 /drivers/block
parentd506aa68c23db708ad45ca8c17f0d7f5d7029a37 (diff)
parent4d88e6f7d5ffc84e6094a47925870f4a130555c2 (diff)
Merge branch 'akpm' (incoming from Andrew Morton)
Merge misc fixes from Andrew Morton: "21 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (21 commits) mm/balloon_compaction: fix deflation when compaction is disabled sh: fix sh770x SCIF memory regions zram: avoid NULL pointer access in concurrent situation mm/slab_common: don't check for duplicate cache names ocfs2: fix d_splice_alias() return code checking mm: rmap: split out page_remove_file_rmap() mm: memcontrol: fix missed end-writeback page accounting mm: page-writeback: inline account_page_dirtied() into single caller lib/bitmap.c: fix undefined shift in __bitmap_shift_{left|right}() drivers/rtc/rtc-bq32k.c: fix register value memory-hotplug: clear pgdat which is allocated by bootmem in try_offline_node() drivers/rtc/rtc-s3c.c: fix initialization failure without rtc source clock kernel/kmod: fix use-after-free of the sub_info structure drivers/rtc/rtc-pm8xxx.c: rework to support pm8941 rtc mm, thp: fix collapsing of hugepages on madvise drivers: of: add return value to of_reserved_mem_device_init() mm: free compound page with correct order gcov: add ARM64 to GCOV_PROFILE_ALL fsnotify: next_i is freed during fsnotify_unmount_inodes. mm/compaction.c: avoid premature range skip in isolate_migratepages_range ...
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/zram/zram_drv.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 0e63e8aa8279..2ad0b5bce44b 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -99,11 +99,12 @@ static ssize_t mem_used_total_show(struct device *dev,
{
u64 val = 0;
struct zram *zram = dev_to_zram(dev);
- struct zram_meta *meta = zram->meta;
down_read(&zram->init_lock);
- if (init_done(zram))
+ if (init_done(zram)) {
+ struct zram_meta *meta = zram->meta;
val = zs_get_total_pages(meta->mem_pool);
+ }
up_read(&zram->init_lock);
return scnprintf(buf, PAGE_SIZE, "%llu\n", val << PAGE_SHIFT);
@@ -173,16 +174,17 @@ static ssize_t mem_used_max_store(struct device *dev,
int err;
unsigned long val;
struct zram *zram = dev_to_zram(dev);
- struct zram_meta *meta = zram->meta;
err = kstrtoul(buf, 10, &val);
if (err || val != 0)
return -EINVAL;
down_read(&zram->init_lock);
- if (init_done(zram))
+ if (init_done(zram)) {
+ struct zram_meta *meta = zram->meta;
atomic_long_set(&zram->stats.max_used_pages,
zs_get_total_pages(meta->mem_pool));
+ }
up_read(&zram->init_lock);
return len;