Date: Sat, 12 Oct 2013 10:26:40 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r256371 - projects/camlock/sys/geom Message-ID: <201310121026.r9CAQehP029727@svn.freebsd.org>
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Author: mav Date: Sat Oct 12 10:26:40 2013 New Revision: 256371 URL: http://svnweb.freebsd.org/changeset/base/256371 Log: Fix passing uninitialized bio_resid argument to g_trace(). Curious that I've found it during profiling by unexpected cache miss. :) Modified: projects/camlock/sys/geom/geom_dev.c Modified: projects/camlock/sys/geom/geom_dev.c ============================================================================== --- projects/camlock/sys/geom/geom_dev.c Sat Oct 12 09:56:09 2013 (r256370) +++ projects/camlock/sys/geom/geom_dev.c Sat Oct 12 10:26:40 2013 (r256371) @@ -486,16 +486,16 @@ g_dev_done(struct bio *bp2) sc = cp->private; bp = bp2->bio_parent; bp->bio_error = bp2->bio_error; - if (bp->bio_error != 0) { + bp->bio_completed = bp2->bio_completed; + bp->bio_resid = bp2->bio_resid; + if (bp2->bio_error != 0) { g_trace(G_T_BIO, "g_dev_done(%p) had error %d", - bp2, bp->bio_error); + bp2, bp2->bio_error); bp->bio_flags |= BIO_ERROR; } else { g_trace(G_T_BIO, "g_dev_done(%p/%p) resid %ld completed %jd", - bp2, bp, bp->bio_resid, (intmax_t)bp2->bio_completed); + bp2, bp, bp2->bio_resid, (intmax_t)bp2->bio_completed); } - bp->bio_resid = bp->bio_length - bp2->bio_completed; - bp->bio_completed = bp2->bio_completed; g_destroy_bio(bp2); destroy = 0; mtx_lock(&sc->sc_mtx);
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