From: Christoph Hellwig <hch@lst.de>
Date: Tue, 13 Dec 2016 00:44:01 +0000 (-0800)
Subject: mm: remove free_unmap_vmap_area_noflush()
X-Git-Tag: v5.15~12328^2~54
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c8eef01e2f98e09a6733f2acdc675b4cf87a22a1;p=platform%2Fkernel%2Flinux-starfive.git

mm: remove free_unmap_vmap_area_noflush()

Patch series "reduce latency in __purge_vmap_area_lazy", v2.

This patch (of 10):

Sort out the long lock hold times in __purge_vmap_area_lazy.  It is
based on a patch from Joel.

Inline free_unmap_vmap_area_noflush() it into the only caller.

Link: http://lkml.kernel.org/r/1479474236-4139-2-git-send-email-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Jisheng Zhang <jszhang@marvell.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: John Dias <joaodias@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index e73948a..c326114 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -711,22 +711,13 @@ static void free_vmap_area_noflush(struct vmap_area *va)
 }
 
 /*
- * Free and unmap a vmap area, caller ensuring flush_cache_vunmap had been
- * called for the correct range previously.
- */
-static void free_unmap_vmap_area_noflush(struct vmap_area *va)
-{
-	unmap_vmap_area(va);
-	free_vmap_area_noflush(va);
-}
-
-/*
  * Free and unmap a vmap area
  */
 static void free_unmap_vmap_area(struct vmap_area *va)
 {
 	flush_cache_vunmap(va->va_start, va->va_end);
-	free_unmap_vmap_area_noflush(va);
+	unmap_vmap_area(va);
+	free_vmap_area_noflush(va);
 }
 
 static struct vmap_area *find_vmap_area(unsigned long addr)