[03/11] btrfs-progs: use calloc instead of malloc+memset for chunk-recover.c

Commit Message

S. Fricke Sept. 29, 2015, 5:10 p.m. UTC

This patch is generated from a coccinelle semantic patch:

	identifier t;
	expression e;
	statement s;
	@@
	-t = malloc(e);
	+t = calloc(1, e);
	(
	if (!t) s
	|
	if (t == NULL) s
	|
	)
	-memset(t, 0, e);

Signed-off-by: Silvio Fricke <[e-mail]>
---
 chunk-recover.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Patch

diff --git a/chunk-recover.c b/chunk-recover.c
index 1fb04f7..d0ca920 100644
--- a/chunk-recover.c
+++ b/chunk-recover.c
@@ -85,13 +85,12 @@  static struct extent_record *btrfs_new_extent_record(struct extent_buffer *eb)
 {
 	struct extent_record *rec;
 
-	rec = malloc(sizeof(*rec));
+	rec = calloc(1, sizeof(*rec));
 	if (!rec) {
 		fprintf(stderr, "Fail to allocate memory for extent record.\n");
 		exit(1);
 	}
 
-	memset(rec, 0, sizeof(*rec));
 	rec->cache.start = btrfs_header_bytenr(eb);
 	rec->cache.size = eb->len;
 	rec->generation = btrfs_header_generation(eb);
@@ -2228,10 +2227,9 @@  static int btrfs_recover_chunks(struct recover_control *rc)
 		nstripes = btrfs_get_device_extents(bg->objectid,
 						    &rc->devext.no_chunk_orphans,
 						    &devexts);
-		chunk = malloc(btrfs_chunk_record_size(nstripes));
+		chunk = calloc(1, btrfs_chunk_record_size(nstripes));
 		if (!chunk)
 			return -ENOMEM;
-		memset(chunk, 0, btrfs_chunk_record_size(nstripes));
 		INIT_LIST_HEAD(&chunk->dextents);
 		chunk->bg_rec = bg;
 		chunk->cache.start = bg->objectid;