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author | alc <alc@FreeBSD.org> | 2010-05-18 16:40:29 +0000 |
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committer | alc <alc@FreeBSD.org> | 2010-05-18 16:40:29 +0000 |
commit | f8bed5b2883af9c45d87310d9d10a81e6fd75834 (patch) | |
tree | 9326e3aa8a7f9c8b44936b69518038347cc385d8 | |
parent | f11cb3f4b947ea3d659a1b883a71986d52f3efb7 (diff) | |
download | FreeBSD-src-f8bed5b2883af9c45d87310d9d10a81e6fd75834.zip FreeBSD-src-f8bed5b2883af9c45d87310d9d10a81e6fd75834.tar.gz |
The page queues lock is no longer required by vm_page_set_invalid(), so
eliminate it.
Assert that the object containing the page is locked in
vm_page_test_dirty(). Perform some style clean up while I'm here.
Reviewed by: kib
-rw-r--r-- | sys/kern/vfs_bio.c | 2 | ||||
-rw-r--r-- | sys/vm/vm_page.c | 10 |
2 files changed, 7 insertions, 5 deletions
diff --git a/sys/kern/vfs_bio.c b/sys/kern/vfs_bio.c index cc76a3c..1ec7ea3 100644 --- a/sys/kern/vfs_bio.c +++ b/sys/kern/vfs_bio.c @@ -1353,9 +1353,7 @@ brelse(struct buf *bp) (PAGE_SIZE - poffset) : resid; KASSERT(presid >= 0, ("brelse: extra page")); - vm_page_lock_queues(); vm_page_set_invalid(m, poffset, presid); - vm_page_unlock_queues(); if (had_bogus) printf("avoided corruption bug in bogus_page/brelse code\n"); } diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c index 1c877d9..0d5b393 100644 --- a/sys/vm/vm_page.c +++ b/sys/vm/vm_page.c @@ -2160,10 +2160,13 @@ vm_page_set_invalid(vm_page_t m, int base, int size) int bits; VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED); + KASSERT((m->oflags & VPO_BUSY) == 0, + ("vm_page_set_invalid: page %p is busy", m)); bits = vm_page_bits(base, size); - mtx_assert(&vm_page_queue_mtx, MA_OWNED); if (m->valid == VM_PAGE_BITS_ALL && bits != 0) pmap_remove_all(m); + KASSERT(!pmap_page_is_mapped(m), + ("vm_page_set_invalid: page %p is mapped", m)); m->valid &= ~bits; m->dirty &= ~bits; m->object->generation++; @@ -2241,9 +2244,10 @@ vm_page_is_valid(vm_page_t m, int base, int size) void vm_page_test_dirty(vm_page_t m) { - if ((m->dirty != VM_PAGE_BITS_ALL) && pmap_is_modified(m)) { + + VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED); + if (m->dirty != VM_PAGE_BITS_ALL && pmap_is_modified(m)) vm_page_dirty(m); - } } int so_zerocp_fullpage = 0; |