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geom_slice.c and its consumers like GEOM_LABEL are not touching the data

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unless hotspots are used.  Pass G_PF_ACCEPT_UNMAPPED flag through except
such rare cases (obsolete GEOM_SUNLABEL and GEOM_BSD).
This commit is contained in:
Alexander Motin 2013-03-26 07:55:24 +00:00
parent 6c6e13b6e1
commit 7868ec506b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=248722
1 changed files with 8 additions and 0 deletions
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8
sys/geom/geom_slice.c
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@ -396,6 +396,8 @@ g_slice_config(struct g_geom *gp, u_int idx, int how, off_t offset, off_t length
pp->stripeoffset = pp2->stripeoffset + offset;
if (pp->stripesize > 0)
pp->stripeoffset %= pp->stripesize;
if (gsp->nhotspot == 0)
pp->flags |= pp2->flags & G_PF_ACCEPT_UNMAPPED;
if (0 && bootverbose)
printf("GEOM: Configure %s, start %jd length %jd end %jd\n",
pp->name, (intmax_t)offset, (intmax_t)length,
@ -428,11 +430,17 @@ g_slice_conf_hot(struct g_geom *gp, u_int idx, off_t offset, off_t length, int r
{
struct g_slicer *gsp;
struct g_slice_hot *gsl, *gsl2;
struct g_provider *pp;
g_trace(G_T_TOPOLOGY, "g_slice_conf_hot(%s, idx: %d, off: %jd, len: %jd)",
gp->name, idx, (intmax_t)offset, (intmax_t)length);
g_topology_assert();
gsp = gp->softc;
/* Deny unmapped I/O if hotspots are used. */
if (gsp->nhotspot == 0) {
LIST_FOREACH(pp, &gp->provider, provider)
pp->flags &= ~G_PF_ACCEPT_UNMAPPED;
}
gsl = gsp->hotspot;
if(idx >= gsp->nhotspot) {
gsl2 = g_malloc((idx + 1) * sizeof *gsl2, M_WAITOK | M_ZERO);