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Merge tag 'fixes-nc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
[profile/ivi/kernel-x86-ivi.git]
/
mm
/
mlock.c
diff --git
a/mm/mlock.c
b/mm/mlock.c
index
192e6ee
..
10819ed
100644
(file)
--- a/
mm/mlock.c
+++ b/
mm/mlock.c
@@
-709,19
+709,21
@@
SYSCALL_DEFINE2(mlock, unsigned long, start, size_t, len)
lru_add_drain_all(); /* flush pagevec */
lru_add_drain_all(); /* flush pagevec */
- down_write(¤t->mm->mmap_sem);
len = PAGE_ALIGN(len + (start & ~PAGE_MASK));
start &= PAGE_MASK;
len = PAGE_ALIGN(len + (start & ~PAGE_MASK));
start &= PAGE_MASK;
- locked = len >> PAGE_SHIFT;
- locked += current->mm->locked_vm;
-
lock_limit = rlimit(RLIMIT_MEMLOCK);
lock_limit >>= PAGE_SHIFT;
lock_limit = rlimit(RLIMIT_MEMLOCK);
lock_limit >>= PAGE_SHIFT;
+ locked = len >> PAGE_SHIFT;
+
+ down_write(¤t->mm->mmap_sem);
+
+ locked += current->mm->locked_vm;
/* check against resource limits */
if ((locked <= lock_limit) || capable(CAP_IPC_LOCK))
error = do_mlock(start, len, 1);
/* check against resource limits */
if ((locked <= lock_limit) || capable(CAP_IPC_LOCK))
error = do_mlock(start, len, 1);
+
up_write(¤t->mm->mmap_sem);
if (!error)
error = __mm_populate(start, len, 0);
up_write(¤t->mm->mmap_sem);
if (!error)
error = __mm_populate(start, len, 0);
@@
-732,11
+734,13
@@
SYSCALL_DEFINE2(munlock, unsigned long, start, size_t, len)
{
int ret;
{
int ret;
- down_write(¤t->mm->mmap_sem);
len = PAGE_ALIGN(len + (start & ~PAGE_MASK));
start &= PAGE_MASK;
len = PAGE_ALIGN(len + (start & ~PAGE_MASK));
start &= PAGE_MASK;
+
+ down_write(¤t->mm->mmap_sem);
ret = do_mlock(start, len, 0);
up_write(¤t->mm->mmap_sem);
ret = do_mlock(start, len, 0);
up_write(¤t->mm->mmap_sem);
+
return ret;
}
return ret;
}
@@
-781,12
+785,12
@@
SYSCALL_DEFINE1(mlockall, int, flags)
if (flags & MCL_CURRENT)
lru_add_drain_all(); /* flush pagevec */
if (flags & MCL_CURRENT)
lru_add_drain_all(); /* flush pagevec */
- down_write(¤t->mm->mmap_sem);
-
lock_limit = rlimit(RLIMIT_MEMLOCK);
lock_limit >>= PAGE_SHIFT;
ret = -ENOMEM;
lock_limit = rlimit(RLIMIT_MEMLOCK);
lock_limit >>= PAGE_SHIFT;
ret = -ENOMEM;
+ down_write(¤t->mm->mmap_sem);
+
if (!(flags & MCL_CURRENT) || (current->mm->total_vm <= lock_limit) ||
capable(CAP_IPC_LOCK))
ret = do_mlockall(flags);
if (!(flags & MCL_CURRENT) || (current->mm->total_vm <= lock_limit) ||
capable(CAP_IPC_LOCK))
ret = do_mlockall(flags);