The patch titled
kernel/relay.c: relay_alloc_page_array() use vzalloc()
has been removed from the -mm tree. Its filename was
kernel-relayc-relay_alloc_page_array-use-vzalloc.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: kernel/relay.c: relay_alloc_page_array() use vzalloc()
From: Jesper Juhl <jj@xxxxxxxxxxxxx>
We can optimize kernel/relay.c::relay_alloc_page_array() slightly by using
vzalloc. The patch makes these changes:
- use vzalloc instead of vmalloc+memset.
- remove redundant local variable 'array'.
- declare local 'pa_size' as const.
Cuts down nicely on both source and object-code size.
Signed-off-by: Jesper Juhl <jj@xxxxxxxxxxxxx>
Cc: Tom Zanussi <zanussi@xxxxxxxxxx>
Cc: Karim Yaghmour <karim@xxxxxxxxxxx>
Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
Cc: Paul Mundt <lethal@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/relay.c | 15 ++++-----------
1 file changed, 4 insertions(+), 11 deletions(-)
diff -puN kernel/relay.c~kernel-relayc-relay_alloc_page_array-use-vzalloc kernel/relay.c
--- a/kernel/relay.c~kernel-relayc-relay_alloc_page_array-use-vzalloc
+++ a/kernel/relay.c
@@ -70,17 +70,10 @@ static const struct vm_operations_struct
*/
static struct page **relay_alloc_page_array(unsigned int n_pages)
{
- struct page **array;
- size_t pa_size = n_pages * sizeof(struct page *);
-
- if (pa_size > PAGE_SIZE) {
- array = vmalloc(pa_size);
- if (array)
- memset(array, 0, pa_size);
- } else {
- array = kzalloc(pa_size, GFP_KERNEL);
- }
- return array;
+ const size_t pa_size = n_pages * sizeof(struct page *);
+ if (pa_size > PAGE_SIZE)
+ return vzalloc(pa_size);
+ return kzalloc(pa_size, GFP_KERNEL);
}
/*
_
Patches currently in -mm which might be from jj@xxxxxxxxxxxxx are
origin.patch
kernel-profilec-use-vzalloc.patch
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