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| author | mux <mux@FreeBSD.org> | 2003-07-25 21:02:25 +0000 |
|---|---|---|
| committer | mux <mux@FreeBSD.org> | 2003-07-25 21:02:25 +0000 |
| commit | a3fee15cba3be9ccb7672a0e23a21f0b258a28d6 (patch) | |
| tree | a4e2823c0152ed939325b21bad02a58ddaae6703 /sys/vm/vm_contig.c | |
| parent | b8872d23e6a7848fe5292b96e5f9138d8244c043 (diff) | |
| download | FreeBSD-src-a3fee15cba3be9ccb7672a0e23a21f0b258a28d6.zip FreeBSD-src-a3fee15cba3be9ccb7672a0e23a21f0b258a28d6.tar.gz | |
Add support for the M_ZERO flag to contigmalloc().
Reviewed by: jeff
Diffstat (limited to 'sys/vm/vm_contig.c')
| -rw-r--r-- | sys/vm/vm_contig.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/vm/vm_contig.c b/sys/vm/vm_contig.c index 905e848..25d9a3a 100644 --- a/sys/vm/vm_contig.c +++ b/sys/vm/vm_contig.c @@ -222,7 +222,8 @@ again1: m->valid = VM_PAGE_BITS_ALL; if (m->flags & PG_ZERO) vm_page_zero_count--; - m->flags = 0; + /* Don't clear the PG_ZERO flag, we'll need it later. */ + m->flags &= PG_ZERO; KASSERT(m->dirty == 0, ("contigmalloc1: page %p was dirty", m)); m->wire_count = 0; @@ -259,6 +260,9 @@ again1: vm_page_t m = &pga[i]; vm_page_insert(m, kernel_object, OFF_TO_IDX(tmp_addr - VM_MIN_KERNEL_ADDRESS)); + if ((flags & M_ZERO) && !(m->flags & PG_ZERO)) + bzero((void *)tmp_addr, PAGE_SIZE); + m->flags = 0; tmp_addr += PAGE_SIZE; } VM_OBJECT_UNLOCK(kernel_object); |
