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Don't attempt to cluster write buffers where the VMIO flag isn't set.

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This commit is contained in:
Tor Egge 2000-11-17 23:40:08 +00:00
parent cd085280b5
commit e5c5b82950
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=68868
1 changed files with 2 additions and 1 deletions
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3
sys/kern/vfs_cluster.c
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@ -716,7 +716,8 @@ cluster_wbuild(vp, size, start_lbn, len)
* up if the cluster was terminated prematurely--too much
* hassle.
*/
if (((tbp->b_flags & (B_CLUSTEROK|B_MALLOC)) != B_CLUSTEROK) ||
if (((tbp->b_flags & (B_CLUSTEROK | B_MALLOC | B_VMIO)) !=
(B_CLUSTEROK | B_VMIO)) ||
(tbp->b_bcount != tbp->b_bufsize) ||
(tbp->b_bcount != size) ||
(len == 1) ||