The patch titled
get_unmapped_area handles MAP_FIXED on ia64
has been removed from the -mm tree. Its filename was
get_unmapped_area-handles-map_fixed-on-ia64.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: get_unmapped_area handles MAP_FIXED on ia64
From: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Handle MAP_FIXED in ia64 arch_get_unmapped_area and
hugetlb_get_unmapped_area(), just call prepare_hugepage_range in the later and
is_hugepage_only_range() in the former.
Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Acked-by: William Irwin <bill.irwin@xxxxxxxxxx>
Cc: "Luck, Tony" <tony.luck@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/ia64/kernel/sys_ia64.c | 7 +++++++
arch/ia64/mm/hugetlbpage.c | 8 ++++++++
2 files changed, 15 insertions(+)
diff -puN arch/ia64/kernel/sys_ia64.c~get_unmapped_area-handles-map_fixed-on-ia64 arch/ia64/kernel/sys_ia64.c
--- a/arch/ia64/kernel/sys_ia64.c~get_unmapped_area-handles-map_fixed-on-ia64
+++ a/arch/ia64/kernel/sys_ia64.c
@@ -33,6 +33,13 @@ arch_get_unmapped_area (struct file *fil
if (len > RGN_MAP_LIMIT)
return -ENOMEM;
+ /* handle fixed mapping: prevent overlap with huge pages */
+ if (flags & MAP_FIXED) {
+ if (is_hugepage_only_range(mm, addr, len))
+ return -EINVAL;
+ return addr;
+ }
+
#ifdef CONFIG_HUGETLB_PAGE
if (REGION_NUMBER(addr) == RGN_HPAGE)
addr = 0;
diff -puN arch/ia64/mm/hugetlbpage.c~get_unmapped_area-handles-map_fixed-on-ia64 arch/ia64/mm/hugetlbpage.c
--- a/arch/ia64/mm/hugetlbpage.c~get_unmapped_area-handles-map_fixed-on-ia64
+++ a/arch/ia64/mm/hugetlbpage.c
@@ -148,6 +148,14 @@ unsigned long hugetlb_get_unmapped_area(
return -ENOMEM;
if (len & ~HPAGE_MASK)
return -EINVAL;
+
+ /* Handle MAP_FIXED */
+ if (flags & MAP_FIXED) {
+ if (prepare_hugepage_range(addr, len, pgoff))
+ return -EINVAL;
+ return addr;
+ }
+
/* This code assumes that RGN_HPAGE != 0. */
if ((REGION_NUMBER(addr) != RGN_HPAGE) || (addr & (HPAGE_SIZE - 1)))
addr = HPAGE_REGION_BASE;
_
Patches currently in -mm which might be from benh@xxxxxxxxxxxxxxxxxxx are
origin.patch
git-powerpc.patch
gregkh-driver-remove-struct-subsystem-as-it-is-no-longer-needed-powerpc-fixes.patch
use-slab_panic-flag-cleanup.patch
the-scheduled-removal-of-obsolete_oss-options.patch
fixes-and-cleanups-for-earlyprintk-aka-boot-console.patch
parport-dev-driver-model-support.patch
introduce-freezer-flags-rev-2.patch
atomich-add-atomic64-cmpxchg-xchg-and-add_unless-to-powerpc.patch
local_t-powerpc-extension.patch
linux-kernel-markers-powerpc-optimization.patch
aty128fb-fix-blanking.patch
radeonfb-add-support-for-radeon-xpress-200m.patch
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