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Diffstat (limited to 'mm/fremap.c')
-rw-r--r--mm/fremap.c17
1 files changed, 4 insertions, 13 deletions
diff --git a/mm/fremap.c b/mm/fremap.c
index 6a8da7ee85fd..87da3590c61e 100644
--- a/mm/fremap.c
+++ b/mm/fremap.c
@@ -129,7 +129,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
struct vm_area_struct *vma;
int err = -EINVAL;
int has_write_lock = 0;
- vm_flags_t vm_flags;
+ vm_flags_t vm_flags = 0;
if (prot)
return err;
@@ -163,8 +163,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
* and that the remapped range is valid and fully within
* the single existing vma.
*/
- vm_flags = vma->vm_flags;
- if (!vma || !(vm_flags & VM_SHARED))
+ if (!vma || !(vma->vm_flags & VM_SHARED))
goto out;
if (!vma->vm_ops || !vma->vm_ops->remap_pages)
@@ -205,10 +204,8 @@ get_write_lock:
unsigned long addr;
struct file *file = get_file(vma->vm_file);
- vm_flags = vma->vm_flags;
- if (!(flags & MAP_NONBLOCK))
- vm_flags |= VM_POPULATE;
- addr = mmap_region(file, start, size, vm_flags, pgoff);
+ addr = mmap_region(file, start, size,
+ vma->vm_flags, pgoff);
fput(file);
if (IS_ERR_VALUE(addr)) {
err = addr;
@@ -227,12 +224,6 @@ get_write_lock:
mutex_unlock(&mapping->i_mmap_mutex);
}
- if (!(flags & MAP_NONBLOCK) && !(vma->vm_flags & VM_POPULATE)) {
- if (!has_write_lock)
- goto get_write_lock;
- vma->vm_flags |= VM_POPULATE;
- }
-
if (vma->vm_flags & VM_LOCKED) {
/*
* drop PG_Mlocked flag for over-mapped range