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| author | Mark Johnston <markj@FreeBSD.org> | 2021-02-22 15:03:37 +0000 |
|---|---|---|
| committer | Mark Johnston <markj@FreeBSD.org> | 2021-03-01 00:32:18 +0000 |
| commit | 1eee54cbf040adba158e42150332905630253264 (patch) | |
| tree | 3d098f533c01e7aba4ce27683b0aa6796114c539 | |
| parent | ba0d063cd6a5b7b6218242a866169a2d8fe32f17 (diff) | |
| download | src-1eee54cbf040adba158e42150332905630253264.tar.gz src-1eee54cbf040adba158e42150332905630253264.zip | |
m_uiotombuf_nomap(): Stop clearing PG_ZERO in newly allocated pages
The caller should not be passing M_ZERO in the first place, so PG_ZERO
will not be preserved by the page allocator and clearing it accomplishes
nothing.
Reviewed by: gallatin, jhb
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D28808
(cherry picked from commit 608c44f96e88f28f9607374a6c9327d13d3d3d0e)
| -rw-r--r-- | sys/kern/uipc_mbuf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/kern/uipc_mbuf.c b/sys/kern/uipc_mbuf.c index f73bfab07eaf..5296aac0edc4 100644 --- a/sys/kern/uipc_mbuf.c +++ b/sys/kern/uipc_mbuf.c @@ -1656,6 +1656,7 @@ m_uiotombuf_nomap(struct uio *uio, int how, int len, int maxseg, int flags) VM_ALLOC_WIRED; MPASS((flags & M_PKTHDR) == 0); + MPASS((how & M_ZERO) == 0); /* * len can be zero or an arbitrary large value bound by @@ -1709,7 +1710,6 @@ retry_page: goto retry_page; } } - pg_array[i]->flags &= ~PG_ZERO; mb->m_epg_pa[i] = VM_PAGE_TO_PHYS(pg_array[i]); mb->m_epg_npgs++; } |