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Diffstat (limited to 'mm/nommu.c')
-rw-r--r--mm/nommu.c42
1 files changed, 18 insertions, 24 deletions
diff --git a/mm/nommu.c b/mm/nommu.c
index 92be862c859b..2360546db065 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -184,40 +184,32 @@ finish_or_fault:
*/
long get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
unsigned long start, unsigned long nr_pages,
- int write, int force, struct page **pages,
+ unsigned int gup_flags, struct page **pages,
struct vm_area_struct **vmas)
{
- int flags = 0;
-
- if (write)
- flags |= FOLL_WRITE;
- if (force)
- flags |= FOLL_FORCE;
-
- return __get_user_pages(tsk, mm, start, nr_pages, flags, pages, vmas,
- NULL);
+ return __get_user_pages(tsk, mm, start, nr_pages,
+ gup_flags, pages, vmas, NULL);
}
EXPORT_SYMBOL(get_user_pages);
long get_user_pages_locked(struct task_struct *tsk, struct mm_struct *mm,
unsigned long start, unsigned long nr_pages,
- int write, int force, struct page **pages,
+ unsigned int gup_flags, struct page **pages,
int *locked)
{
- return get_user_pages(tsk, mm, start, nr_pages, write, force,
+ return get_user_pages(tsk, mm, start, nr_pages, gup_flags,
pages, NULL);
}
EXPORT_SYMBOL(get_user_pages_locked);
long __get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm,
unsigned long start, unsigned long nr_pages,
- int write, int force, struct page **pages,
- unsigned int gup_flags)
+ struct page **pages, unsigned int gup_flags)
{
long ret;
down_read(&mm->mmap_sem);
- ret = get_user_pages(tsk, mm, start, nr_pages, write, force,
- pages, NULL);
+ ret = __get_user_pages(tsk, mm, start, nr_pages, gup_flags, pages,
+ NULL, NULL);
up_read(&mm->mmap_sem);
return ret;
}
@@ -225,10 +217,10 @@ EXPORT_SYMBOL(__get_user_pages_unlocked);
long get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm,
unsigned long start, unsigned long nr_pages,
- int write, int force, struct page **pages)
+ struct page **pages, unsigned int gup_flags)
{
- return __get_user_pages_unlocked(tsk, mm, start, nr_pages, write,
- force, pages, 0);
+ return __get_user_pages_unlocked(tsk, mm, start, nr_pages,
+ pages, gup_flags);
}
EXPORT_SYMBOL(get_user_pages_unlocked);
@@ -1937,9 +1929,10 @@ void filemap_map_pages(struct vm_area_struct *vma, struct vm_fault *vmf)
EXPORT_SYMBOL(filemap_map_pages);
static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
- unsigned long addr, void *buf, int len, int write)
+ unsigned long addr, void *buf, int len, unsigned int gup_flags)
{
struct vm_area_struct *vma;
+ int write = gup_flags & FOLL_WRITE;
down_read(&mm->mmap_sem);
@@ -1974,14 +1967,14 @@ static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
* @addr: start address to access
* @buf: source or destination buffer
* @len: number of bytes to transfer
- * @write: whether the access is a write
+ * @gup_flags: flags modifying lookup behaviour
*
* The caller must hold a reference on @mm.
*/
int access_remote_vm(struct mm_struct *mm, unsigned long addr,
- void *buf, int len, int write)
+ void *buf, int len, unsigned int gup_flags)
{
- return __access_remote_vm(NULL, mm, addr, buf, len, write);
+ return __access_remote_vm(NULL, mm, addr, buf, len, gup_flags);
}
/*
@@ -1999,7 +1992,8 @@ int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, in
if (!mm)
return 0;
- len = __access_remote_vm(tsk, mm, addr, buf, len, write);
+ len = __access_remote_vm(tsk, mm, addr, buf, len,
+ write ? FOLL_WRITE : 0);
mmput(mm);
return len;