diff options
Diffstat (limited to 'mm/gup.c')
| -rw-r--r-- | mm/gup.c | 17 |
1 files changed, 1 insertions, 16 deletions
@@ -3005,8 +3005,6 @@ static int internal_get_user_pages_fast(unsigned long start, * * Like get_user_pages_fast() except it's IRQ-safe in that it won't fall back to * the regular GUP. - * Note a difference with get_user_pages_fast: this always returns the - * number of pages pinned, 0 if no pages were pinned. * * If the architecture does not support this function, simply return with no * pages pinned. @@ -3018,7 +3016,6 @@ static int internal_get_user_pages_fast(unsigned long start, int get_user_pages_fast_only(unsigned long start, int nr_pages, unsigned int gup_flags, struct page **pages) { - int nr_pinned; /* * Internally (within mm/gup.c), gup fast variants must set FOLL_GET, * because gup fast is always a "pin with a +1 page refcount" request. @@ -3030,19 +3027,7 @@ int get_user_pages_fast_only(unsigned long start, int nr_pages, FOLL_GET | FOLL_FAST_ONLY)) return -EINVAL; - nr_pinned = internal_get_user_pages_fast(start, nr_pages, gup_flags, - pages); - - /* - * As specified in the API description above, this routine is not - * allowed to return negative values. However, the common core - * routine internal_get_user_pages_fast() *can* return -errno. - * Therefore, correct for that here: - */ - if (nr_pinned < 0) - nr_pinned = 0; - - return nr_pinned; + return internal_get_user_pages_fast(start, nr_pages, gup_flags, pages); } EXPORT_SYMBOL_GPL(get_user_pages_fast_only); |