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authorThomas Hellstrom <thellstrom@vmware.com>2019-10-01 10:37:33 +0200
committerThomas Hellstrom <thellstrom@vmware.com>2019-11-06 13:02:17 +0100
commitea81bae46032022656d45d4a395f1bf3b96697f0 (patch)
tree500d2722b72ca83e669ab8bf0725eb892ae82947 /mm/shuffle.c
parentdrm/ttm: Convert vm callbacks to helpers (diff)
downloadlinux-ea81bae46032022656d45d4a395f1bf3b96697f0.tar.xz
linux-ea81bae46032022656d45d4a395f1bf3b96697f0.zip
mm: Remove BUG_ON mmap_sem not held from xxx_trans_huge_lock()
The caller needs to make sure that the vma is not torn down during the lock operation and can also use the i_mmap_rwsem for file-backed vmas. Remove the BUG_ON. We could, as an alternative, add a test that either vma->vm_mm->mmap_sem or vma->vm_file->f_mapping->i_mmap_rwsem are held. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Huang Ying <ying.huang@intel.com> Cc: Jérôme Glisse <jglisse@redhat.com> Cc: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Acked-by: Kirill A. Shutemov <kirill@shutemov.name>
Diffstat (limited to 'mm/shuffle.c')
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