mm, dax: use i_mmap_unlock_write() in do_cow_fault()
__dax_fault() takes i_mmap_lock for write. Let's pair it with write unlock on do_cow_fault() side. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
46c043ede4
commit
52a2b53ffd
@ -3013,9 +3013,9 @@ static int do_cow_fault(struct mm_struct *mm, struct vm_area_struct *vma,
|
|||||||
} else {
|
} else {
|
||||||
/*
|
/*
|
||||||
* The fault handler has no page to lock, so it holds
|
* The fault handler has no page to lock, so it holds
|
||||||
* i_mmap_lock for read to protect against truncate.
|
* i_mmap_lock for write to protect against truncate.
|
||||||
*/
|
*/
|
||||||
i_mmap_unlock_read(vma->vm_file->f_mapping);
|
i_mmap_unlock_write(vma->vm_file->f_mapping);
|
||||||
}
|
}
|
||||||
goto uncharge_out;
|
goto uncharge_out;
|
||||||
}
|
}
|
||||||
@ -3029,9 +3029,9 @@ static int do_cow_fault(struct mm_struct *mm, struct vm_area_struct *vma,
|
|||||||
} else {
|
} else {
|
||||||
/*
|
/*
|
||||||
* The fault handler has no page to lock, so it holds
|
* The fault handler has no page to lock, so it holds
|
||||||
* i_mmap_lock for read to protect against truncate.
|
* i_mmap_lock for write to protect against truncate.
|
||||||
*/
|
*/
|
||||||
i_mmap_unlock_read(vma->vm_file->f_mapping);
|
i_mmap_unlock_write(vma->vm_file->f_mapping);
|
||||||
}
|
}
|
||||||
return ret;
|
return ret;
|
||||||
uncharge_out:
|
uncharge_out:
|
||||||
|
Loading…
Reference in New Issue
Block a user