The patch titled
vmalloc: always unmap in vb_free()
has been added to the -mm tree. Its filename is
vmalloc-eagerly-clear-ptes-on-vunmap-fix.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: vmalloc: always unmap in vb_free()
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
free_vmap_block() doesn't unmap anything, so just unconditionally unmap
the region.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
Cc: Nick Piggin <npiggin@xxxxxxxxx>
Cc: Bryan Schumaker <bjschuma@xxxxxxxxxx>
Cc: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
Cc: Alex Elder <aelder@xxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmalloc.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff -puN mm/vmalloc.c~vmalloc-eagerly-clear-ptes-on-vunmap-fix mm/vmalloc.c
--- a/mm/vmalloc.c~vmalloc-eagerly-clear-ptes-on-vunmap-fix
+++ a/mm/vmalloc.c
@@ -941,6 +941,8 @@ static void vb_free(const void *addr, un
rcu_read_unlock();
BUG_ON(!vb);
+ vunmap_page_range((unsigned long)addr, (unsigned long)addr + size);
+
spin_lock(&vb->lock);
BUG_ON(bitmap_allocate_region(vb->dirty_map, offset >> PAGE_SHIFT, order));
@@ -949,10 +951,8 @@ static void vb_free(const void *addr, un
BUG_ON(vb->free);
spin_unlock(&vb->lock);
free_vmap_block(vb);
- } else {
+ } else
spin_unlock(&vb->lock);
- vunmap_page_range((unsigned long)addr, (unsigned long)addr + size);
- }
}
/**
_
Patches currently in -mm which might be from jeremy@xxxxxxxx are
linux-next.patch
vmalloc-eagerly-clear-ptes-on-vunmap.patch
vmalloc-eagerly-clear-ptes-on-vunmap-fix.patch
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