summaryrefslogtreecommitdiff
path: root/drivers/base/memory.c
diff options
context:
space:
mode:
authorWei Yang <richard.weiyang@gmail.com>2018-04-10 16:29:23 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-11 10:28:31 -0700
commitbc8755ba66325cb5874eef81d935e91c331d0b1d (patch)
tree6f7d4cdc25031e9db54d1bde4211cfa333ee7d7f /drivers/base/memory.c
parent09a913a7a947fb6f624379e9da22670994942b85 (diff)
mm: check __highest_present_section_nr directly in memory_dev_init()
__highest_present_section_nr is a more strict boundary than NR_MEM_SECTIONS. So checking __highest_present_section_nr directly is enough. Link: http://lkml.kernel.org/r/20180330032044.21647-1-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Michal Hocko <mhocko@suse.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/base/memory.c')
-rw-r--r--drivers/base/memory.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 79fcd2bae96b..bffe8616bd55 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -837,11 +837,8 @@ int __init memory_dev_init(void)
* during boot and have been initialized
*/
mutex_lock(&mem_sysfs_mutex);
- for (i = 0; i < NR_MEM_SECTIONS; i += sections_per_block) {
- /* Don't iterate over sections we know are !present: */
- if (i > __highest_present_section_nr)
- break;
-
+ for (i = 0; i <= __highest_present_section_nr;
+ i += sections_per_block) {
err = add_memory_block(i);
if (!ret)
ret = err;