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mm: do_xip_mapping_read: fix length calculation
[safe/jmp/linux-2.6]
/
mm
/
bounce.c
diff --git
a/mm/bounce.c
b/mm/bounce.c
index
06722c4
..
e590272
100644
(file)
--- a/
mm/bounce.c
+++ b/
mm/bounce.c
@@
-14,6
+14,7
@@
#include <linux/hash.h>
#include <linux/highmem.h>
#include <linux/blktrace_api.h>
#include <linux/hash.h>
#include <linux/highmem.h>
#include <linux/blktrace_api.h>
+#include <trace/block.h>
#include <asm/tlbflush.h>
#define POOL_SIZE 64
#include <asm/tlbflush.h>
#define POOL_SIZE 64
@@
-21,6
+22,8
@@
static mempool_t *page_pool, *isa_page_pool;
static mempool_t *page_pool, *isa_page_pool;
+DEFINE_TRACE(block_bio_bounce);
+
#ifdef CONFIG_HIGHMEM
static __init int init_emergency_pool(void)
{
#ifdef CONFIG_HIGHMEM
static __init int init_emergency_pool(void)
{
@@
-195,8
+198,13
@@
static void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig,
/*
* irk, bounce it
*/
/*
* irk, bounce it
*/
- if (!bio)
- bio = bio_alloc(GFP_NOIO, (*bio_orig)->bi_vcnt);
+ if (!bio) {
+ unsigned int cnt = (*bio_orig)->bi_vcnt;
+
+ bio = bio_alloc(GFP_NOIO, cnt);
+ memset(bio->bi_io_vec, 0, cnt * sizeof(struct bio_vec));
+ }
+
to = bio->bi_io_vec + i;
to = bio->bi_io_vec + i;
@@
-222,7
+230,7
@@
static void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig,
if (!bio)
return;
if (!bio)
return;
-
blk_add_trace_bio(q, *bio_orig, BLK_TA_BOUNCE
);
+
trace_block_bio_bounce(q, *bio_orig
);
/*
* at least one page was bounced, fill in possible non-highmem
/*
* at least one page was bounced, fill in possible non-highmem