diff options
Diffstat (limited to 'src/util.c')
| -rw-r--r-- | src/util.c | 18 |
1 files changed, 16 insertions, 2 deletions
@@ -271,8 +271,11 @@ int copy_fd(int sfd, int dfd, off_t l) { msfo = (off_t) (sfo/psize)*psize; sm = m+(sfo-msfo); - if ((sp = mmap(NULL, sm, PROT_READ, MAP_SHARED, sfd, msfo)) != MAP_FAILED) + if ((sp = mmap(NULL, sm, PROT_READ, MAP_SHARED, sfd, msfo)) != MAP_FAILED) { +#ifdef HAVE_MADVISE madvise(sp, sm, MADV_SEQUENTIAL); +#endif + } } if ((dfo = lseek(dfd, 0, SEEK_CUR)) != (off_t) -1) { @@ -281,8 +284,11 @@ int copy_fd(int sfd, int dfd, off_t l) { mdfo = (off_t) (dfo/psize)*psize; dm = m+(dfo-mdfo); - if ((dp = mmap(NULL, dm, PROT_READ|PROT_WRITE, MAP_SHARED, dfd, mdfo)) != MAP_FAILED) + if ((dp = mmap(NULL, dm, PROT_READ|PROT_WRITE, MAP_SHARED, dfd, mdfo)) != MAP_FAILED) { +#ifdef HAVE_MADVISE madvise(dp, dm, MADV_SEQUENTIAL); +#endif + } } } @@ -363,7 +369,10 @@ int copy_fd(int sfd, int dfd, off_t l) { fprintf(stderr, "mmap(): %s\n", strerror(errno)); return -1; } + +#ifdef HAVE_MADVISE madvise(dp, dm, MADV_SEQUENTIAL); +#endif } } else if (dp == MAP_FAILED) { /* copy mmap to fd */ @@ -402,7 +411,10 @@ int copy_fd(int sfd, int dfd, off_t l) { fprintf(stderr, "mmap(): %s\n", strerror(errno)); return -1; } + +#ifdef HAVE_MADVISE madvise(sp, sm, MADV_SEQUENTIAL); +#endif } } else { /* copy mmap to mmap */ @@ -448,8 +460,10 @@ int copy_fd(int sfd, int dfd, off_t l) { return -1; } +#ifdef HAVE_MADVISE madvise(sp, sm, MADV_SEQUENTIAL); madvise(dp, dm, MADV_SEQUENTIAL); +#endif } } } |