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OpenCloudOS-Kernel
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Merge branch 'akpm' (patches from Andrew) 

Merge fixes from Andrew Morton:
 "2 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  zsmalloc: fix zs_can_compact() integer overflow
  Revert "proc/base: make prompt shell start from new line after executing "cat /proc/$pid/wchan""
This commit is contained in:
Linus Torvalds 2016-05-09 17:54:59 -07:00
parent b507146bb6 44f43e99fe
commit 5c56b563b4
2 changed files with 6 additions and 3 deletions
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2
fs/proc/base.c
View File

@ -434,7 +434,7 @@ static int proc_pid_wchan(struct seq_file *m, struct pid_namespace *ns,
&& !lookup_symbol_name(wchan, symname))
seq_printf(m, "%s", symname);
else
seq_puts(m, "0\n");
seq_putc(m, '0');
return 0;
}

7
mm/zsmalloc.c
View File

@ -1735,10 +1735,13 @@ static struct page *isolate_source_page(struct size_class *class)
static unsigned long zs_can_compact(struct size_class *class)
{
unsigned long obj_wasted;
unsigned long obj_allocated = zs_stat_get(class, OBJ_ALLOCATED);
unsigned long obj_used = zs_stat_get(class, OBJ_USED);
obj_wasted = zs_stat_get(class, OBJ_ALLOCATED) -
zs_stat_get(class, OBJ_USED);
if (obj_allocated <= obj_used)
return 0;
obj_wasted = obj_allocated - obj_used;
obj_wasted /= get_maxobj_per_zspage(class->size,
class->pages_per_zspage);