redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

mm/huge_memory.c: use head to check huge zero page 

commit cb82962486 upstream.

The page could be a tail page, if this is the case, this BUG_ON will
never be triggered.

Link: http://lkml.kernel.org/r/20200110032610.26499-1-richardw.yang@linux.intel.com
Fixes: e9b61f1985 ("thp: reintroduce split_huge_page()")

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Wei Yang 2020-01-30 22:14:29 -08:00 committed by Greg Kroah-Hartman
parent 8cb5db61af
commit 0eb282cb1f
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
mm/huge_memory.c
View File

@ -2712,7 +2712,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list)
unsigned long flags;
pgoff_t end;
VM_BUG_ON_PAGE(is_huge_zero_page(page), page);
VM_BUG_ON_PAGE(is_huge_zero_page(head), head);
VM_BUG_ON_PAGE(!PageLocked(page), page);
VM_BUG_ON_PAGE(!PageCompound(page), page);