diff options
| author | Michael Shalayeff <mickey@cvs.openbsd.org> | 2003-11-21 21:41:39 +0000 |
|---|---|---|
| committer | Michael Shalayeff <mickey@cvs.openbsd.org> | 2003-11-21 21:41:39 +0000 |
| commit | c87ab46eedc2039bba88e3e81f6bfd2620a03515 (patch) | |
| tree | 9c90708ece6078468f18ac155d7b38dd80cde444 /usr.bin/cmp | |
| parent | e3a7340c3aa111b73910da8aa88d51d3f11a48fa (diff) | |
mark mmap()ed memory as sequentially accessed
Diffstat (limited to 'usr.bin/cmp')
| -rw-r--r-- | usr.bin/cmp/regular.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/usr.bin/cmp/regular.c b/usr.bin/cmp/regular.c index f5fe302456f..3056b0eaa2d 100644 --- a/usr.bin/cmp/regular.c +++ b/usr.bin/cmp/regular.c @@ -1,4 +1,4 @@ -/* $OpenBSD: regular.c,v 1.7 2003/06/03 02:56:06 millert Exp $ */ +/* $OpenBSD: regular.c,v 1.8 2003/11/21 21:41:38 mickey Exp $ */ /* $NetBSD: regular.c,v 1.2 1995/09/08 03:22:59 tls Exp $ */ /*- @@ -34,7 +34,7 @@ #if 0 static char sccsid[] = "@(#)regular.c 8.3 (Berkeley) 4/2/94"; #else -static char rcsid[] = "$OpenBSD: regular.c,v 1.7 2003/06/03 02:56:06 millert Exp $"; +static char rcsid[] = "$OpenBSD: regular.c,v 1.8 2003/11/21 21:41:38 mickey Exp $"; #endif #endif /* not lint */ @@ -85,6 +85,10 @@ c_regular(fd1, file1, skip1, len1, fd2, file2, skip2, len2) munmap(p1, (size_t)length); goto mmap_failed; } + if (length) { + madvise(p1, length, MADV_SEQUENTIAL); + madvise(p2, length, MADV_SEQUENTIAL); + } dfound = 0; for (byte = line = 1; length--; ++p1, ++p2, ++byte) { |