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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-10 02:54:59 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-10 02:54:59 +0200 |
| commit | 5c56b563b4486281bff80658194f0d1da6feba67 (patch) | |
| tree | 80ab610988c049511122c53078578e538a0b9ffa | |
| parent | Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert... (diff) | |
| parent | zsmalloc: fix zs_can_compact() integer overflow (diff) | |
| download | linux-5c56b563b4486281bff80658194f0d1da6feba67.tar.xz linux-5c56b563b4486281bff80658194f0d1da6feba67.zip | |
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""
Diffstat (limited to '')
| -rw-r--r-- | fs/proc/base.c | 2 | ||||
| -rw-r--r-- | mm/zsmalloc.c | 7 |
2 files changed, 6 insertions, 3 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 92e37e224cd2..0d163a84082d 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -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; } diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index e72efb109fde..fe47fbba995a 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -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); |