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authorArnd Bergmann <arnd@arndb.de>2014-03-17 10:17:07 -0400
committerArnd Bergmann <arnd@arndb.de>2014-03-17 10:17:07 -0400
commit38edc2da5014e70e46a724d97c3ef3dde106331b (patch)
tree590499bacd062e8dd74c6f05a7d811dd714a2d70 /mm/mprotect.c
parent937b5991ca7717ceba99014f2ad3f51c85cdb9ad (diff)
parent28b191118c11719bb27db621425a70be28a40e08 (diff)
Merge tag 'omap-for-v3.15/dt-overo-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/dt
Updates to the .dts files to support more Gumstix boards. These are sent separately from the rest of the .dts changes as these depend on the fixes merged into v3.14-rc4, and needed a bit more time to get updated on the fixes. * tag 'omap-for-v3.15/dt-overo-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: dts: Add support for the Overo Summit ARM: dts: Add support for the Overo Chestnut43 ARM: dts: Add support for the Overo Alto35 ARM: dts: Add support for the Overo Gallop43 ARM: dts: Add support for the Overo Palo43 ARM: dts: overo: Add LIS33DE accelerometer ARM: dts: overo: Create a file for common Gumstix peripherals ARM: dts: overo: Push uart3 pinmux down to expansion board ARM: dts: omap3-tobi: Add AT24C01 EEPROM ARM: dts: omap3-tobi: Use include file omap-gpmc-smsc9221 ARM: dts: omap: Add common file for SMSC9221 ARM: dts: omap3-overo: Add HSUSB PHY ARM: dts: omap3-overo: Enable WiFi/BT combo ARM: dts: omap3-overo: Add missing pinctrl ARM: dts: omap3-tobi: Add missing pinctrl ARM: dts: overo: reorganize include files Signed-off-by: Arnd Bergmann <arnd@arndb.de> Conflicts: arch/arm/boot/dts/omap3-overo.dtsi
Diffstat (limited to 'mm/mprotect.c')
-rw-r--r--mm/mprotect.c25
1 files changed, 8 insertions, 17 deletions
diff --git a/mm/mprotect.c b/mm/mprotect.c
index 7332c1785744..769a67a15803 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,
58 if (pte_numa(ptent)) 58 if (pte_numa(ptent))
59 ptent = pte_mknonnuma(ptent); 59 ptent = pte_mknonnuma(ptent);
60 ptent = pte_modify(ptent, newprot); 60 ptent = pte_modify(ptent, newprot);
61 /*
62 * Avoid taking write faults for pages we
63 * know to be dirty.
64 */
65 if (dirty_accountable && pte_dirty(ptent))
66 ptent = pte_mkwrite(ptent);
67 ptep_modify_prot_commit(mm, addr, pte, ptent);
61 updated = true; 68 updated = true;
62 } else { 69 } else {
63 struct page *page; 70 struct page *page;
64 71
65 ptent = *pte;
66 page = vm_normal_page(vma, addr, oldpte); 72 page = vm_normal_page(vma, addr, oldpte);
67 if (page && !PageKsm(page)) { 73 if (page && !PageKsm(page)) {
68 if (!pte_numa(oldpte)) { 74 if (!pte_numa(oldpte)) {
69 ptent = pte_mknuma(ptent); 75 ptep_set_numa(mm, addr, pte);
70 set_pte_at(mm, addr, pte, ptent);
71 updated = true; 76 updated = true;
72 } 77 }
73 } 78 }
74 } 79 }
75
76 /*
77 * Avoid taking write faults for pages we know to be
78 * dirty.
79 */
80 if (dirty_accountable && pte_dirty(ptent)) {
81 ptent = pte_mkwrite(ptent);
82 updated = true;
83 }
84
85 if (updated) 80 if (updated)
86 pages++; 81 pages++;
87
88 /* Only !prot_numa always clears the pte */
89 if (!prot_numa)
90 ptep_modify_prot_commit(mm, addr, pte, ptent);
91 } else if (IS_ENABLED(CONFIG_MIGRATION) && !pte_file(oldpte)) { 82 } else if (IS_ENABLED(CONFIG_MIGRATION) && !pte_file(oldpte)) {
92 swp_entry_t entry = pte_to_swp_entry(oldpte); 83 swp_entry_t entry = pte_to_swp_entry(oldpte);
93 84