Check for case of blkno already known to avoid unnecessary VOP_BMAP's.
Submitted by: John Dyson
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=7613
@ -33,7 +33,7 @@
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* SUCH DAMAGE.
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*
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* @(#)vfs_cluster.c 8.7 (Berkeley) 2/13/94
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* $Id: vfs_cluster.c,v 1.13 1995/03/16 18:12:48 bde Exp $
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* $Id: vfs_cluster.c,v 1.14 1995/03/19 13:28:54 davidg Exp $
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*/
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#include <sys/param.h>
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@ -439,6 +439,7 @@ cluster_write(bp, filesize)
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* existing cluster.
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*/
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if ((lbn + 1) * lblocksize != filesize &&
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(bp->b_blkno == bp->b_lblkno) &&
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(VOP_BMAP(vp, lbn, NULL, &bp->b_blkno, &maxclen) ||
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bp->b_blkno == -1)) {
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bawrite(bp);
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