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| author | David S. Miller <[email protected]> | 2019-06-18 02:48:13 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2019-06-18 03:20:36 +0000 |
| commit | 13091aa30535b719e269f20a7bc34002bf5afae5 (patch) | |
| tree | bd17956c3ce606a119fadbd43bfa1c0c10006984 /arch/powerpc/mm/pgtable.c | |
| parent | Merge branch 'UDP-GSO-audit-tests' (diff) | |
| parent | Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs (diff) | |
| download | kernel-13091aa30535b719e269f20a7bc34002bf5afae5.tar.gz kernel-13091aa30535b719e269f20a7bc34002bf5afae5.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Honestly all the conflicts were simple overlapping changes,
nothing really interesting to report.
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'arch/powerpc/mm/pgtable.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c index 39d2f8012386..fc10c0c24f51 100644 --- a/arch/powerpc/mm/pgtable.c +++ b/arch/powerpc/mm/pgtable.c @@ -368,13 +368,25 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea, pdshift = PMD_SHIFT; pmdp = pmd_offset(&pud, ea); pmd = READ_ONCE(*pmdp); + /* - * A hugepage collapse is captured by pmd_none, because - * it mark the pmd none and do a hpte invalidate. + * A hugepage collapse is captured by this condition, see + * pmdp_collapse_flush. */ if (pmd_none(pmd)) return NULL; +#ifdef CONFIG_PPC_BOOK3S_64 + /* + * A hugepage split is captured by this condition, see + * pmdp_invalidate. + * + * Huge page modification can be caught here too. + */ + if (pmd_is_serializing(pmd)) + return NULL; +#endif + if (pmd_trans_huge(pmd) || pmd_devmap(pmd)) { if (is_thp) *is_thp = true; |