[PATCH] fix leak with bounced bio's

[Jens Axboe]

Hi,

This might fix the last leak of memory reported with cd writing, the
current highmem bounce code will leak n-1 pages for any n page bio where
n > 1. CD writing typically uses 16 pages bios, so it is affected.

===== mm/highmem.c 1.51 vs edited =====
--- 1.51/mm/highmem.c	2004-07-29 06:58:32 +02:00
+++ edited/mm/highmem.c	2004-09-08 21:18:57 +02:00
@@ -284,7 +284,7 @@
 	struct bio_vec *tovec, *fromvec;
 	int i;
 
-	bio_for_each_segment(tovec, to, i) {
+	__bio_for_each_segment(tovec, to, i, 0) {
 		fromvec = from->bi_io_vec + i;
 
 		/*
@@ -316,7 +316,7 @@
 	/*
 	 * free up bounce indirect pages used
 	 */
-	bio_for_each_segment(bvec, bio, i) {
+	__bio_for_each_segment(bvec, bio, i, 0) {
 		org_vec = bio_orig->bi_io_vec + i;
 		if (bvec->bv_page == org_vec->bv_page)
 			continue;

-- 
Jens Axboe

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