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- Try to catch the wrong bufobj panics a little earlier. I believe they

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are actually caused by a buf with both VNCLEAN and VNDIRTY set.  In
   the traces it is clear that the buf is removed from the dirty queue while
   it is actually on the clean queue which leaves the tail pointer set.
   Assert that both flags are not set in buf_vlist_add and buf_vlist_remove.

Sponsored by:	Isilon Systems, Inc.
Approved by:	re (blanket vfs)
This commit is contained in:
Jeff Roberson 2005-06-18 18:17:03 +00:00
parent ea7630862d
commit b770ff6eb2
1 changed files with 5 additions and 0 deletions
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5
sys/kern/vfs_subr.c
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@ -1260,6 +1260,9 @@ buf_vlist_remove(struct buf *bp)
KASSERT(bp->b_bufobj != NULL, ("No b_bufobj %p", bp));
ASSERT_BO_LOCKED(bp->b_bufobj);
KASSERT((bp->b_xflags & (BX_VNDIRTY|BX_VNCLEAN)) !=
(BX_VNDIRTY|BX_VNCLEAN),
("buf_vlist_remove: Buf %p is on two lists", bp));
if (bp->b_xflags & BX_VNDIRTY)
bv = &bp->b_bufobj->bo_dirty;
else
@ -1293,6 +1296,8 @@ buf_vlist_add(struct buf *bp, struct bufobj *bo, b_xflags_t xflags)
struct bufv *bv;
ASSERT_BO_LOCKED(bo);
KASSERT((bp->b_xflags & (BX_VNDIRTY|BX_VNCLEAN)) == 0,
("buf_vlist_add: Buf %p has existing xflags %d", bp, bp->b_xflags));
bp->b_xflags |= xflags;
if (xflags & BX_VNDIRTY)
bv = &bo->bo_dirty;