This is in particular useful for large I/Os because it will allow > 100
allocs from the SLUB fast path without having to go to the page allocator.
Signed-off-by: Christoph Lameter <[email protected]>
---
fs/buffer.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
Index: linux-2.6/fs/buffer.c
===================================================================
--- linux-2.6.orig/fs/buffer.c 2007-09-18 15:44:37.000000000 -0700
+++ linux-2.6/fs/buffer.c 2007-09-18 15:44:51.000000000 -0700
@@ -3008,7 +3008,8 @@ void __init buffer_init(void)
int nrpages;
bh_cachep = KMEM_CACHE(buffer_head,
- SLAB_RECLAIM_ACCOUNT|SLAB_PANIC|SLAB_MEM_SPREAD);
+ SLAB_RECLAIM_ACCOUNT|SLAB_PANIC|SLAB_MEM_SPREAD|
+ SLAB_VFALLBACK);
/*
* Limit the bh occupancy to 10% of ZONE_NORMAL
--
-
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