diff options
author | Andrea Arcangeli <aarcange@redhat.com> | 2015-02-12 02:27:20 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-12 04:06:05 +0300 |
commit | 0fd71a56f41d4ffabeda1dae9ff5ed4f34d4e935 (patch) | |
tree | bf1844624a69986ad308c298b894e1890977af91 /include | |
parent | f0818f472d8d527a96ec9cc2c3a56223497f9dd3 (diff) | |
download | linux-0fd71a56f41d4ffabeda1dae9ff5ed4f34d4e935.tar.xz |
mm: gup: add __get_user_pages_unlocked to customize gup_flags
Some callers (like KVM) may want to set the gup_flags like FOLL_HWPOSION
to get a proper -EHWPOSION retval instead of -EFAULT to take a more
appropriate action if get_user_pages runs into a memory failure.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andres Lagar-Cavilla <andreslc@google.com>
Cc: Peter Feiner <pfeiner@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/mm.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index fc499e675475..3696b3bd1d7e 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1265,6 +1265,10 @@ 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, int *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); 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); |