diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-02 20:09:08 -0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-02 20:09:08 -0800 |
commit | 13df7977431e3b906a23bb75f29e0f40a8d73f87 (patch) | |
tree | bc2c78c3b816a65f90c31cccebdc15b38352c045 /mm/mprotect.c | |
parent | 6d8b3e1ad3d3815d9c87b8553493301e243af76a (diff) | |
parent | 0414855fdc4a40da05221fc6062cccbc0c30f169 (diff) |
Merge 3.14-rc5 into driver-core-next
We want the fixes in here.
Diffstat (limited to 'mm/mprotect.c')
-rw-r--r-- | mm/mprotect.c | 25 |
1 files changed, 8 insertions, 17 deletions
diff --git a/mm/mprotect.c b/mm/mprotect.c index 7332c1785744f..769a67a158037 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -58,36 +58,27 @@ static unsigned long change_pte_range(struct vm_area_struct *vma, pmd_t *pmd, if (pte_numa(ptent)) ptent = pte_mknonnuma(ptent); ptent = pte_modify(ptent, newprot); + /* + * Avoid taking write faults for pages we + * know to be dirty. + */ + if (dirty_accountable && pte_dirty(ptent)) + ptent = pte_mkwrite(ptent); + ptep_modify_prot_commit(mm, addr, pte, ptent); updated = true; } else { struct page *page; - ptent = *pte; page = vm_normal_page(vma, addr, oldpte); if (page && !PageKsm(page)) { if (!pte_numa(oldpte)) { - ptent = pte_mknuma(ptent); - set_pte_at(mm, addr, pte, ptent); + ptep_set_numa(mm, addr, pte); updated = true; } } } - - /* - * Avoid taking write faults for pages we know to be - * dirty. - */ - if (dirty_accountable && pte_dirty(ptent)) { - ptent = pte_mkwrite(ptent); - updated = true; - } - if (updated) pages++; - - /* Only !prot_numa always clears the pte */ - if (!prot_numa) - ptep_modify_prot_commit(mm, addr, pte, ptent); } else if (IS_ENABLED(CONFIG_MIGRATION) && !pte_file(oldpte)) { swp_entry_t entry = pte_to_swp_entry(oldpte); |