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| author |   Jason A. Donenfeld <Jason@zx2c4.com> | 2020-06-19 17:52:18 -0600 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2020-09-30 16:46:02 +0200 |
| commit | b5065fe42bae3379cc169a7ebab48805d4dd8eb2 (patch) | |
| tree | 89fdff07fca56a37283be5cc8a45429dbf5ca9ff | |
| parent | x86: remove errant CFI usage from rwlock (diff) | |
| download | rhel7-kernel-misery-b5065fe42bae3379cc169a7ebab48805d4dd8eb2.tar.xz rhel7-kernel-misery-b5065fe42bae3379cc169a7ebab48805d4dd8eb2.zip | |
mm: guard pudp_clear_flush_notify with mm notifier config
Without CONFIG_MMU_NOTIFIER, pudp_clear_flush_notify isn't defined and
doesn't make sense, so ifdef that out of the huge page path.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
| -rw-r--r-- | mm/huge_memory.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 4d7993ce39b..a709ea6eb32 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2035,7 +2035,9 @@ void __split_huge_page_pud(struct vm_area_struct *vma, unsigned long address, if (unlikely(!pud_trans_huge(*pud) && !pud_devmap(*pud))) goto out; BUG_ON(vma->vm_start > haddr || vma->vm_end < haddr + HPAGE_PUD_SIZE); +#ifdef CONFIG_MMU_NOTIFIER pudp_clear_flush_notify(vma, haddr, pud); +#endif out: spin_unlock(ptl); |