The branch stable/12 has been updated by asomers: URL: https://cgit.FreeBSD.org/src/commit/?id=e0c4ed73f3a6a83f24d9a0bfe89f288ff1b93463
commit e0c4ed73f3a6a83f24d9a0bfe89f288ff1b93463 Author: Alan Somers <[email protected]> AuthorDate: 2021-03-03 20:06:38 +0000 Commit: Alan Somers <[email protected]> CommitDate: 2021-04-08 21:33:22 +0000 Modernize geom_stats_snapshot_get * A logically useless memset() is used to fault in some memory pages. Change it to explicit_bzero so the compiler won't eliminate it. * Eliminate the second memset. It made sense in the days of the Big Kernel Lock, but not in the days of fine-grained SMP and especially not in the days of VDSO. Sponsored by: Axcient Reviewed by: phk Differential Revision: https://reviews.freebsd.org/D29047 (cherry picked from commit f05b724ecb310fb91da1947ae6c68647f58f5f12) --- lib/libgeom/geom_stats.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/lib/libgeom/geom_stats.c b/lib/libgeom/geom_stats.c index 450ee491ea1c..7c9191e29686 100644 --- a/lib/libgeom/geom_stats.c +++ b/lib/libgeom/geom_stats.c @@ -136,9 +136,8 @@ geom_stats_snapshot_get(void) free(sp); return (NULL); } - memset(sp->ptr, 0, pagesize * npages); /* page in, cache */ + explicit_bzero(sp->ptr, pagesize * npages); /* page in, cache */ clock_gettime(CLOCK_REALTIME, &sp->time); - memset(sp->ptr, 0, pagesize * npages); /* page in, cache */ memcpy(sp->ptr, statp, pagesize * npages); sp->pages = npages; sp->perpage = spp; _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/dev-commits-src-all To unsubscribe, send any mail to "[email protected]"
