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author | Al Viro <viro@zeniv.linux.org.uk> | 2017-11-18 14:17:46 -0500 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-12-02 20:29:11 -0500 |
commit | c803c9c6c9e591977635b7868e45fabb1e243f98 (patch) | |
tree | 40f743d180fa683a6b7b9415004749af308c4d09 /mm/gup.c | |
parent | 4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323 (diff) | |
download | blackbird-op-linux-c803c9c6c9e591977635b7868e45fabb1e243f98.tar.gz blackbird-op-linux-c803c9c6c9e591977635b7868e45fabb1e243f98.zip |
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.c | 36 |
1 files changed, 10 insertions, 26 deletions
@@ -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); |