svn commit: r314913 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs
Andriy Gapon
avg at FreeBSD.org
Wed Mar 8 13:52:46 UTC 2017
Author: avg
Date: Wed Mar 8 13:52:45 2017
New Revision: 314913
URL: https://svnweb.freebsd.org/changeset/base/314913
Log:
MFV r314911: 7867 ARC space accounting leak
illumos/illumos-gate at 6de76ce2a90f54fecb0dba46dca08c99cef7aa08
https://github.com/illumos/illumos-gate/commit/6de76ce2a90f54fecb0dba46dca08c99cef7aa08
https://www.illumos.org/issues/7867
It seems that in the case where arc_hdr_free_pdata() sees HDR_L2_WRITING() we
would fail to update the ARC space statistics.
In the normal case those statistics are updated in arc_free_data_buf(). But in
the arc_hdr_free_on_write() path we don't do that.
Reviewed by: Matthew Ahrens <mahrens at delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel at delphix.com>
Approved by: Dan McDonald <danmcd at omniti.com>
Author: Andriy Gapon <avg at FreeBSD.org>
MFC after: 10 days
Modified:
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
Directory Properties:
head/sys/cddl/contrib/opensolaris/ (props changed)
Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Wed Mar 8 13:48:26 2017 (r314912)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Wed Mar 8 13:52:45 2017 (r314913)
@@ -2612,6 +2612,12 @@ arc_hdr_free_on_write(arc_buf_hdr_t *hdr
size, hdr);
}
(void) refcount_remove_many(&state->arcs_size, size, hdr);
+ if (type == ARC_BUFC_METADATA) {
+ arc_space_return(size, ARC_SPACE_META);
+ } else {
+ ASSERT(type == ARC_BUFC_DATA);
+ arc_space_return(size, ARC_SPACE_DATA);
+ }
l2arc_free_data_on_write(hdr->b_l1hdr.b_pdata, size, type);
}
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