The patch titled
Subject: mm: remove free_unmap_vmap_area_noflush()
has been added to the -mm tree. Its filename is
mm-remove-free_unmap_vmap_area_noflush.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-remove-free_unmap_vmap_area_noflush.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-remove-free_unmap_vmap_area_noflush.patch
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------------------------------------------------------
From: Christoph Hellwig <hch@xxxxxx>
Subject: 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@xxxxxx
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Tested-by: Jisheng Zhang <jszhang@xxxxxxxxxxx>
Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Joel Fernandes <joelaf@xxxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: John Dias <joaodias@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmalloc.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff -puN mm/vmalloc.c~mm-remove-free_unmap_vmap_area_noflush mm/vmalloc.c
--- a/mm/vmalloc.c~mm-remove-free_unmap_vmap_area_noflush
+++ a/mm/vmalloc.c
@@ -711,22 +711,13 @@ static void free_vmap_area_noflush(struc
}
/*
- * 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)
_
Patches currently in -mm which might be from hch@xxxxxx are
mm-remove-free_unmap_vmap_area_noflush.patch
mm-remove-free_unmap_vmap_area_addr.patch
mm-refactor-__purge_vmap_area_lazy.patch
mm-warn-about-vfree-from-atomic-context.patch
mm-mark-all-calls-into-the-vmalloc-subsystem-as-potentially-sleeping.patch
mm-turn-vmap_purge_lock-into-a-mutex.patch
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