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$NetBSD: patch-ao,v 1.1 2000/08/22 15:08:45 wennmach Exp $
Deal with a potential deadlock situation, which may arise when writing back
data from a vnode failed because the ticket expired in the meantime.
From arla-current, thanks to Assar and Love.
Index: xfs_vnodeops-common.c
===================================================================
RCS file: /afs/stacken.kth.se/src/SourceRepository/arla/xfs/bsd/xfs_vnodeops-common.c,v
retrieving revision 1.58
diff -u -w -u -w -r1.58 xfs_vnodeops-common.c
--- xfs/bsd/xfs_vnodeops-common.c 2000/08/02 00:58:09 1.58
+++ xfs/bsd/xfs_vnodeops-common.c 2000/08/17 00:30:23
@@ -260,8 +260,17 @@
return 0;
}
- if (xn->flags & XFS_DATA_DIRTY)
+ if (xn->flags & XFS_DATA_DIRTY) {
+#ifdef FSYNC_RECLAIM
+ /* writing back the data from this vnode failed */
+ if (waitfor & FSYNC_RECLAIM) {
+ printf("xfs_fsync: data lost, failed to write back\n");
+ xn->flags &= ~XFS_DATA_DIRTY;
+ return 0;
+ }
+#endif
error = do_fsync(xfsp, xn, cred, proc, XFS_WRITE | XFS_FSYNC);
+ }
return error;
}
@@ -907,8 +916,9 @@
/* xn->cred not set -> NOCRED */
error = xfs_fsync_common(vp, xn->cred, /* XXX */ 0, p);
- if (error)
- XFSDEB(XDEBVNOPS, ("xfs_inactive: fsync failed: %d\n", error));
+ if (error) {
+ printf ("xfs_inactive: failed writing back data: %d\n", error);
+ }
#ifndef __osf__
xfs_vfs_unlock(vp, p);
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