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authorAlastair D'Silva <alastair@d-silva.org>2019-09-24 01:36:33 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-25 01:54:09 +0300
commit5ed867037eb1f15b7e8cc92497671fd4b3864e4a (patch)
tree06c78c883a2bee88954c4257bcd2403cd3c0ed1c /mm/sparse.c
parent9f82883c6d9af516c2a7f9fe85eb09e9c25bbe0a (diff)
downloadlinux-5ed867037eb1f15b7e8cc92497671fd4b3864e4a.tar.xz
mm/sparse.c: remove NULL check in clear_hwpoisoned_pages()
There is no possibility for memmap to be NULL in the current codebase. This check was added in commit 95a4774d055c ("memory-hotplug: update mce_bad_pages when removing the memory") where memmap was originally inited to NULL, and only conditionally given a value. The code that could have passed a NULL has been removed by commit ba72b4c8cf60 ("mm/sparsemem: support sub-section hotplug"), so there is no longer a possibility that memmap can be NULL. Link: http://lkml.kernel.org/r/20190829035151.20975-1-alastair@d-silva.org Signed-off-by: Alastair D'Silva <alastair@d-silva.org> Acked-by: Michal Hocko <mhocko@suse.com> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Qian Cai <cai@lca.pw> Cc: Alexander Duyck <alexander.h.duyck@linux.intel.com> Cc: Logan Gunthorpe <logang@deltatee.com> Cc: Baoquan He <bhe@redhat.com> Cc: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/sparse.c')
-rw-r--r--mm/sparse.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/mm/sparse.c b/mm/sparse.c
index d7af5cfdc810..bf32de9e666b 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -896,9 +896,6 @@ static void clear_hwpoisoned_pages(struct page *memmap, int nr_pages)
{
int i;
- if (!memmap)
- return;
-
/*
* A further optimization is to have per section refcounted
* num_poisoned_pages. But that would need more space per memmap, so