svn commit: r199495 -
user/kmacy/releng_8_fcs_buf/sys/cddl/contrib/opensolaris/uts/common/fs/zfs
Kip Macy
kmacy at FreeBSD.org
Wed Nov 18 22:31:11 UTC 2009
Author: kmacy
Date: Wed Nov 18 22:31:10 2009
New Revision: 199495
URL: http://svn.freebsd.org/changeset/base/199495
Log:
only cache new buffer if the buffer is valid and the I/O succeded
Modified:
user/kmacy/releng_8_fcs_buf/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
Modified: user/kmacy/releng_8_fcs_buf/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
==============================================================================
--- user/kmacy/releng_8_fcs_buf/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Wed Nov 18 22:14:36 2009 (r199494)
+++ user/kmacy/releng_8_fcs_buf/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Wed Nov 18 22:31:10 2009 (r199495)
@@ -188,6 +188,7 @@ SYSCTL_INT(_vfs_zfs, OID_AUTO, mdcomp_di
&zfs_mdcomp_disable, 0, "Disable metadata compression");
static int zfs_page_cache_disable = 0;
+TUNABLE_INT("vfs.zfs.page_cache_disable", &zfs_page_cache_disable);
SYSCTL_INT(_vfs_zfs, OID_AUTO, page_cache_disable, CTLFLAG_RDTUN,
&zfs_page_cache_disable, 0, "Disable backing ARC with page cache ");
@@ -1343,9 +1344,8 @@ arc_bgetvp(arc_buf_t *buf)
BO_UNLOCK(bo);
}
}
- } else {
- newbp->b_flags |= B_CACHE;
- newbp->b_flags &= ~B_INVAL;
+ } else if (!(hdr->b_flags & ARC_IO_ERROR) &&
+ (newbp->b_flags & (B_INVAL|B_CACHE)) == B_CACHE) {
bgetvp(vp, newbp);
BO_UNLOCK(bo);
}
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