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authorAl Viro <viro@zeniv.linux.org.uk>2017-11-18 14:17:46 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2017-12-02 20:29:11 -0500
commitc803c9c6c9e591977635b7868e45fabb1e243f98 (patch)
tree40f743d180fa683a6b7b9415004749af308c4d09 /mm/gup.c
parent4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323 (diff)
fold __get_user_pages_unlocked() into its sole remaining caller
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm/gup.c')
-rw-r--r--mm/gup.c36
1 files changed, 10 insertions, 26 deletions
diff --git a/mm/gup.c b/mm/gup.c
index dfcde13f289a..e7b9f5e97479 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -965,30 +965,6 @@ long get_user_pages_locked(unsigned long start, unsigned long nr_pages,
EXPORT_SYMBOL(get_user_pages_locked);
/*
- * Same as get_user_pages_unlocked(...., FOLL_TOUCH) but it allows for
- * tsk, mm to be specified.
- *
- * NOTE: here FOLL_TOUCH is not set implicitly and must be set by the
- * caller if required (just like with __get_user_pages). "FOLL_GET"
- * is set implicitly if "pages" is non-NULL.
- */
-static __always_inline long __get_user_pages_unlocked(struct task_struct *tsk,
- struct mm_struct *mm, unsigned long start,
- unsigned long nr_pages, struct page **pages,
- unsigned int gup_flags)
-{
- long ret;
- int locked = 1;
-
- down_read(&mm->mmap_sem);
- ret = __get_user_pages_locked(tsk, mm, start, nr_pages, pages, NULL,
- &locked, false, gup_flags);
- if (locked)
- up_read(&mm->mmap_sem);
- return ret;
-}
-
-/*
* get_user_pages_unlocked() is suitable to replace the form:
*
* down_read(&mm->mmap_sem);
@@ -1006,8 +982,16 @@ static __always_inline long __get_user_pages_unlocked(struct task_struct *tsk,
long get_user_pages_unlocked(unsigned long start, unsigned long nr_pages,
struct page **pages, unsigned int gup_flags)
{
- return __get_user_pages_unlocked(current, current->mm, start, nr_pages,
- pages, gup_flags | FOLL_TOUCH);
+ struct mm_struct *mm = current->mm;
+ int locked = 1;
+ long ret;
+
+ down_read(&mm->mmap_sem);
+ ret = __get_user_pages_locked(current, mm, start, nr_pages, pages, NULL,
+ &locked, false, gup_flags | FOLL_TOUCH);
+ if (locked)
+ up_read(&mm->mmap_sem);
+ return ret;
}
EXPORT_SYMBOL(get_user_pages_unlocked);