linux-kernel - [PATCH v2 3/8] mm/gup: make __gup_longterm

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Message-Id: <20201210004335.64634-4-pasha.tatashin@soleen.com>
Date:   Wed,  9 Dec 2020 19:43:30 -0500
From:   Pavel Tatashin <pasha.tatashin@...een.com>
To:     pasha.tatashin@...een.com, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, akpm@...ux-foundation.org, vbabka@...e.cz,
        mhocko@...e.com, david@...hat.com, osalvador@...e.de,
        dan.j.williams@...el.com, sashal@...nel.org,
        tyhicks@...ux.microsoft.com, iamjoonsoo.kim@....com,
        mike.kravetz@...cle.com, rostedt@...dmis.org, mingo@...hat.com,
        jgg@...pe.ca, peterz@...radead.org, mgorman@...e.de,
        willy@...radead.org, rientjes@...gle.com, jhubbard@...dia.com,
        linux-doc@...r.kernel.org
Subject: [PATCH v2 3/8] mm/gup: make __gup_longterm_locked common

__gup_longterm_locked() has CMA || FS_DAX version and a common stub
version. In the preparation of prohibiting longterm pinning of pages from
movable zone make the CMA || FS_DAX version common, and delete the stub
version.

Signed-off-by: Pavel Tatashin <pasha.tatashin@...een.com>
Reviewed-by: John Hubbard <jhubbard@...dia.com>
---
 mm/gup.c | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/mm/gup.c b/mm/gup.c
index 3a76c005a3e2..0e2de888a8b0 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1567,7 +1567,6 @@ struct page *get_dump_page(unsigned long addr)
 }
 #endif /* CONFIG_ELF_CORE */
 
-#if defined(CONFIG_FS_DAX) || defined (CONFIG_CMA)
 #ifdef CONFIG_FS_DAX
 static bool check_dax_vmas(struct vm_area_struct **vmas, long nr_pages)
 {
@@ -1757,18 +1756,6 @@ static long __gup_longterm_locked(struct mm_struct *mm,
 		kfree(vmas_tmp);
 	return rc;
 }
-#else /* !CONFIG_FS_DAX && !CONFIG_CMA */
-static __always_inline long __gup_longterm_locked(struct mm_struct *mm,
-						  unsigned long start,
-						  unsigned long nr_pages,
-						  struct page **pages,
-						  struct vm_area_struct **vmas,
-						  unsigned int flags)
-{
-	return __get_user_pages_locked(mm, start, nr_pages, pages, vmas,
-				       NULL, flags);
-}
-#endif /* CONFIG_FS_DAX || CONFIG_CMA */
 
 static bool is_valid_gup_flags(unsigned int gup_flags)
 {
-- 
2.25.1