Date: Sun, 2 Feb 2020 09:37:17 +0000 (UTC) From: Mateusz Guzik <mjg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r357405 - head/sys/kern Message-ID: <202002020937.0129bH9E023017@repo.freebsd.org>
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Author: mjg Date: Sun Feb 2 09:37:16 2020 New Revision: 357405 URL: https://svnweb.freebsd.org/changeset/base/357405 Log: fd: use atomic_load_ptr instead of hand-rolled cast through volatile No change in assembly. Modified: head/sys/kern/kern_descrip.c Modified: head/sys/kern/kern_descrip.c ============================================================================== --- head/sys/kern/kern_descrip.c Sun Feb 2 09:36:32 2020 (r357404) +++ head/sys/kern/kern_descrip.c Sun Feb 2 09:37:16 2020 (r357405) @@ -2737,8 +2737,7 @@ fget_unlocked(struct filedesc *fdp, int fd, cap_rights * table before this fd was closed, so it possible that * there is a stale fp pointer in cached version. */ - fdt = *(const struct fdescenttbl * const volatile *) - &(fdp->fd_files); + fdt = (struct fdescenttbl *)atomic_load_ptr(&fdp->fd_files); continue; } if (__predict_false(count + 1 < count))
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