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Eliminate the acquisition and release of the page queues lock from

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vfs_busy_pages().  It is no longer needed.

Submitted by:	kib
This commit is contained in:
Alan Cox 2010-05-25 02:26:25 +00:00
parent 785c3f7ea4
commit e98d019d3c
2 changed files with 0 additions and 6 deletions
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5
sys/kern/vfs_bio.c
View File

@ -3508,7 +3508,6 @@ vfs_page_set_validclean(struct buf *bp, vm_ooffset_t off, vm_page_t m)
{
vm_ooffset_t soff, eoff;
mtx_assert(&vm_page_queue_mtx, MA_OWNED);
/*
* Start and end offsets in buffer. eoff - soff may not cross a
* page boundry or cross the end of the buffer. The end of the
@ -3571,8 +3570,6 @@ vfs_busy_pages(struct buf *bp, int clear_modify)
goto retry;
}
bogus = 0;
if (clear_modify)
vm_page_lock_queues();
for (i = 0; i < bp->b_npages; i++) {
m = bp->b_pages[i];
@ -3605,8 +3602,6 @@ vfs_busy_pages(struct buf *bp, int clear_modify)
}
foff = (foff + PAGE_SIZE) & ~(off_t)PAGE_MASK;
}
if (clear_modify)
vm_page_unlock_queues();
VM_OBJECT_UNLOCK(obj);
if (bogus)
pmap_qenter(trunc_page((vm_offset_t)bp->b_data),

1
sys/vm/vm_page.c
View File

@ -2084,7 +2084,6 @@ vm_page_set_validclean(vm_page_t m, int base, int size)
int frag;
int endoff;
mtx_assert(&vm_page_queue_mtx, MA_OWNED);
VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED);
if (size == 0) /* handle degenerate case */
return;