The patch titled
Subject: mm: use may_adjust_brk helper
has been removed from the -mm tree. Its filename was
mm-use-may_adjust_brk-helper.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
Subject: mm: use may_adjust_brk helper
Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Andrew Vagin <avagin@xxxxxxxxxx>
Cc: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Acked-by: Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx>
Cc: Pavel Emelyanov <xemul@xxxxxxxxxxxxx>
Cc: Vasiliy Kulikov <segoon@xxxxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Michael Kerrisk <mtk.manpages@xxxxxxxxx>
Cc: Julien Tinnes <jln@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/sys.c | 11 ++++-------
mm/mmap.c | 7 +++----
2 files changed, 7 insertions(+), 11 deletions(-)
diff -puN kernel/sys.c~mm-use-may_adjust_brk-helper kernel/sys.c
--- a/kernel/sys.c~mm-use-may_adjust_brk-helper
+++ a/kernel/sys.c
@@ -1693,7 +1693,6 @@ exit:
static int prctl_set_mm(int opt, unsigned long addr,
unsigned long arg4, unsigned long arg5)
{
- unsigned long rlim = rlimit(RLIMIT_DATA);
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
int error;
@@ -1733,9 +1732,8 @@ static int prctl_set_mm(int opt, unsigne
if (addr <= mm->end_data)
goto out;
- if (rlim < RLIM_INFINITY &&
- (mm->brk - addr) +
- (mm->end_data - mm->start_data) > rlim)
+ if (check_data_rlimit(rlimit(RLIMIT_DATA), mm->brk, addr,
+ mm->end_data, mm->start_data))
goto out;
mm->start_brk = addr;
@@ -1745,9 +1743,8 @@ static int prctl_set_mm(int opt, unsigne
if (addr <= mm->end_data)
goto out;
- if (rlim < RLIM_INFINITY &&
- (addr - mm->start_brk) +
- (mm->end_data - mm->start_data) > rlim)
+ if (check_data_rlimit(rlimit(RLIMIT_DATA), addr, mm->start_brk,
+ mm->end_data, mm->start_data))
goto out;
mm->brk = addr;
diff -puN mm/mmap.c~mm-use-may_adjust_brk-helper mm/mmap.c
--- a/mm/mmap.c~mm-use-may_adjust_brk-helper
+++ a/mm/mmap.c
@@ -268,7 +268,7 @@ static unsigned long do_brk(unsigned lon
SYSCALL_DEFINE1(brk, unsigned long, brk)
{
- unsigned long rlim, retval;
+ unsigned long retval;
unsigned long newbrk, oldbrk;
struct mm_struct *mm = current->mm;
unsigned long min_brk;
@@ -298,9 +298,8 @@ SYSCALL_DEFINE1(brk, unsigned long, brk)
* segment grow beyond its set limit the in case where the limit is
* not page aligned -Ram Gupta
*/
- rlim = rlimit(RLIMIT_DATA);
- if (rlim < RLIM_INFINITY && (brk - mm->start_brk) +
- (mm->end_data - mm->start_data) > rlim)
+ if (check_data_rlimit(rlimit(RLIMIT_DATA), brk, mm->start_brk,
+ mm->end_data, mm->start_data))
goto out;
newbrk = PAGE_ALIGN(brk);
_
Patches currently in -mm which might be from gorcunov@xxxxxxxxxx are
origin.patch
mm-softdirty-enable-write-notifications-on-vmas-after-vm_softdirty-cleared.patch
mm-softdirty-enable-write-notifications-on-vmas-after-vm_softdirty-cleared-fix.patch
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