[src/trunk]: src/usr.sbin/makefs/chfs PR/50911: David Binderman: Optimize memset

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/60342e1f3887
branches:  trunk
changeset: 814114:60342e1f3887
user:      christos <christos%NetBSD.org@localhost>
date:      Mon Mar 07 15:58:05 2016 +0000

description:
PR/50911: David Binderman: Optimize memset

diffstat:

 usr.sbin/makefs/chfs/chfs_mkfs.c |  3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diffs (20 lines):

diff -r 76b18ba237d4 -r 60342e1f3887 usr.sbin/makefs/chfs/chfs_mkfs.c
--- a/usr.sbin/makefs/chfs/chfs_mkfs.c  Mon Mar 07 15:56:17 2016 +0000
+++ b/usr.sbin/makefs/chfs/chfs_mkfs.c  Mon Mar 07 15:58:05 2016 +0000
@@ -124,7 +124,6 @@
        if ((uint32_t)opts->pagesize < MINSIZE)
                errx(EXIT_FAILURE, "pagesize cannot be less than %zu", MINSIZE);
        buf = emalloc(opts->pagesize);
-       memset(buf, 0xFF, opts->pagesize);
 
        ebhdr.ec_hdr.magic = htole32(CHFS_MAGIC_BITMASK);
        ebhdr.ec_hdr.erase_cnt = htole32(1);
@@ -132,6 +131,8 @@
            (uint8_t *)&ebhdr.ec_hdr + 8, 4));
 
        memcpy(buf, &ebhdr.ec_hdr, CHFS_EB_EC_HDR_SIZE);
+       memset(buf + CHFS_EB_EC_HDR_SIZE, 0xFF,
+           opts->pagesize - CHFS_EB_EC_HDR_SIZE);
 
        buf_write(fsopts, buf, opts->pagesize);