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| author |   Wei Yang <richard.weiyang@gmail.com> | 2018-04-10 16:29:23 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-11 10:28:31 -0700 |
| commit | bc8755ba66325cb5874eef81d935e91c331d0b1d (patch) | |
| tree | 6f7d4cdc25031e9db54d1bde4211cfa333ee7d7f | |
| parent | sched/numa: avoid trapping faults and attempting migration of file-backed dirty pages (diff) | |
| download | wireguard-linux-bc8755ba66325cb5874eef81d935e91c331d0b1d.tar.xz wireguard-linux-bc8755ba66325cb5874eef81d935e91c331d0b1d.zip | |
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>
| -rw-r--r-- | drivers/base/memory.c | 7 |
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; |