From c8eef01e2f98e09a6733f2acdc675b4cf87a22a1 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Mon, 12 Dec 2016 16:44:01 -0800
Subject: [PATCH] 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>
---
mm/vmalloc.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index e73948afac70e..c3261143a0af9 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -710,23 +710,14 @@ static void free_vmap_area_noflush(struct vmap_area *va)
try_purge_vmap_area_lazy();
}
-/*
- * 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)
--
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