Commit c8eef01e authored Dec 12, 2016 by Christoph Hellwig Committed by Linus Torvalds Dec 12, 2016

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>

parent b5388998

mm/vmalloc.c

+2 −11

Original line number	Original line	Diff line number	Diff line
	@@ -710,23 +710,14 @@ static void free_vmap_area_noflush(struct vmap_area *va)
	try_purge_vmap_area_lazy();		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		* Free and unmap a vmap area
	*/		*/
	static void free_unmap_vmap_area(struct vmap_area *va)		static void free_unmap_vmap_area(struct vmap_area *va)
	{		{
	flush_cache_vunmap(va->va_start, va->va_end);		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)		static struct vmap_area *find_vmap_area(unsigned long addr)

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