The patch titled
Subject: mm/gup.c: fix comments of __get_user_pages() and get_user_pages_remote()
has been removed from the -mm tree. Its filename was
mm-gup-fix-comments-of-__get_user_pages-and-get_user_pages_remote.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Liu Xiang <liuxiang_1999@xxxxxxx>
Subject: mm/gup.c: fix comments of __get_user_pages() and get_user_pages_remote()
Fix comments of __get_user_pages() and get_user_pages_remote(),
make them more clear.
Link: http://lkml.kernel.org/r/1572443533-3118-1-git-send-email-liuxiang_1999@xxxxxxx
Signed-off-by: Liu Xiang <liuxiang_1999@xxxxxxx>
Suggested-by: John Hubbard <jhubbard@xxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Reviewed-by: John Hubbard <jhubbard@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/gup.c | 32 ++++++++++++++++++++++----------
1 file changed, 22 insertions(+), 10 deletions(-)
--- a/mm/gup.c~mm-gup-fix-comments-of-__get_user_pages-and-get_user_pages_remote
+++ a/mm/gup.c
@@ -734,11 +734,17 @@ static int check_vma_flags(struct vm_are
* Or NULL if the caller does not require them.
* @nonblocking: whether waiting for disk IO or mmap_sem contention
*
- * Returns number of pages pinned. This may be fewer than the number
- * requested. If nr_pages is 0 or negative, returns 0. If no pages
- * were pinned, returns -errno. Each page returned must be released
- * with a put_page() call when it is finished with. vmas will only
- * remain valid while mmap_sem is held.
+ * Returns either number of pages pinned (which may be less than the
+ * number requested), or an error. Details about the return value:
+ *
+ * -- If nr_pages is 0, returns 0.
+ * -- If nr_pages is >0, but no pages were pinned, returns -errno.
+ * -- If nr_pages is >0, and some pages were pinned, returns the number of
+ * pages pinned. Again, this may be less than nr_pages.
+ *
+ * The caller is responsible for releasing returned @pages, via put_page().
+ *
+ * @vmas are valid only as long as mmap_sem is held.
*
* Must be called with mmap_sem held. It may be released. See below.
*
@@ -1107,11 +1113,17 @@ static __always_inline long __get_user_p
* subsequently whether VM_FAULT_RETRY functionality can be
* utilised. Lock must initially be held.
*
- * Returns number of pages pinned. This may be fewer than the number
- * requested. If nr_pages is 0 or negative, returns 0. If no pages
- * were pinned, returns -errno. Each page returned must be released
- * with a put_page() call when it is finished with. vmas will only
- * remain valid while mmap_sem is held.
+ * Returns either number of pages pinned (which may be less than the
+ * number requested), or an error. Details about the return value:
+ *
+ * -- If nr_pages is 0, returns 0.
+ * -- If nr_pages is >0, but no pages were pinned, returns -errno.
+ * -- If nr_pages is >0, and some pages were pinned, returns the number of
+ * pages pinned. Again, this may be less than nr_pages.
+ *
+ * The caller is responsible for releasing returned @pages, via put_page().
+ *
+ * @vmas are valid only as long as mmap_sem is held.
*
* Must be called with mmap_sem held for read or write.
*
_
Patches currently in -mm which might be from liuxiang_1999@xxxxxxx are
