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[PATCH v3 5/9] tools/vm/page_owner: increase temporary buffer size

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From: Joonsoo Kim <iamjoonsoo.kim@lge.com>

Page owner will be changed to store more deep stacktrace so current
temporary buffer size isn't enough.  Increase it.

Link: http://lkml.kernel.org/r/1464230275-25791-5-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Alexander Potapenko <glider@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Michal Hocko <mhocko@kernel.org>
---
 tools/vm/page_owner_sort.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/tools/vm/page_owner_sort.c b/tools/vm/page_owner_sort.c
index 77147b4..f1c055f 100644
--- a/tools/vm/page_owner_sort.c
+++ b/tools/vm/page_owner_sort.c
@@ -79,12 +79,12 @@ static void add_list(char *buf, int len)
 	}
 }
 
-#define BUF_SIZE	1024
+#define BUF_SIZE	(128 * 1024)
 
 int main(int argc, char **argv)
 {
 	FILE *fin, *fout;
-	char buf[BUF_SIZE];
+	char *buf;
 	int ret, i, count;
 	struct block_list *list2;
 	struct stat st;
@@ -107,6 +107,11 @@ int main(int argc, char **argv)
 	max_size = st.st_size / 100; /* hack ... */
 
 	list = malloc(max_size * sizeof(*list));
+	buf = malloc(BUF_SIZE);
+	if (!list || !buf) {
+		printf("Out of memory\n");
+		exit(1);
+	}
 
 	for ( ; ; ) {
 		ret = read_block(buf, BUF_SIZE, fin);
-- 
1.9.1

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[PATCH v3 0/9] reduce memory usage by page_owner js1304@gmail.com - 2016-06-17 10:00 +0200
  [PATCH v3 9/9] mm/page_isolation: clean up confused code js1304@gmail.com - 2016-06-17 10:00 +0200
    Re: [PATCH v3 9/9] mm/page_isolation: clean up confused code Vlastimil Babka <vbabka@suse.cz> - 2016-06-17 15:40 +0200
  [PATCH v3 5/9] tools/vm/page_owner: increase temporary buffer size js1304@gmail.com - 2016-06-17 10:00 +0200
    Re: [PATCH v3 5/9] tools/vm/page_owner: increase temporary buffer  size Vlastimil Babka <vbabka@suse.cz> - 2016-06-17 15:00 +0200
  [PATCH v3 1/9] mm/compaction: split freepages without holding the zone lock js1304@gmail.com - 2016-06-17 10:10 +0200
  [PATCH v3 3/9] mm/page_owner: copy last_migrate_reason in copy_page_owner() js1304@gmail.com - 2016-06-17 10:10 +0200

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